Mitsubishi Electronics FX5 User Manual

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MELSEC iQ-F FX5 User's Manual (Application)

SAFETY PRECAUTIONS

WARNING

Indicates that incorrect handling may cause hazardous conditions, resulting in death or severe injury.

CAUTION

Indicates that incorrect handling may cause hazardous conditions, resulting in minor or moderate injury or property damage.

(Read these precautions before use.)

Before using this product, please read this manual and the relevant manuals introduced in this manual carefully and pay

attention to safety in order to handle the product correctly.

This manual classifies the safety precautions into two categories: [ WARNING] and [ CAUTION].

Depending on the circumstances, procedures indicated by [ CAUTION] may also cause severe injury.

It is important to follow all precautions for personal safety.

Store this manual in a safe place so that it can be read whenever necessary. Always forward it to the end user.

[DESIGN PRECAUTIONS]

WARNING

● Make sure to set up the following safety circuits outside the PLC to ensure safe system operation even during external power supply problems or PLC failure. Otherwise, malfunctions may cause serious accidents.

- Most importantly, set up the following: an emergency stop circuit, a protection circuit, an interlock

circuit for opposite movements (such as forward vs. reverse rotation), and an interlock circuit to prevent damage to the equipment at the upper and lower positioning limits.

- Note that when the CPU module detects an error, such as a watchdog timer error, during self-

diagnosis, all outputs are turned off. Also, when an error that cannot be detected by the CPU module occurs in an input/output control block, output control may be disabled. External circuits and mechanisms should be designed to ensure safe machine operation in such a case.

- Note that the output current of the 24 V DC service power supply varies depending on the model

and the absence/presence of extension modules. If an overload occurs, the voltage automatically drops, inputs in the PLC are disabled, and all outputs are turned off. External circuits and mechanisms should be designed to ensure safe machine operation in such a case.

- Note that when an error occurs in a relay or transistor of an output circuit, the output might stay on

or off. For output signals that may lead to serious accidents, external circuits and mechanisms should be designed to ensure safe machine operation.

● Construct an interlock circuit in the program to ensure safe operation for the whole system when executing control (for data change) of the PLC in operation. Read the manual thoroughly and ensure complete safety before executing other controls (for program change, parameter change, forced output and operation status change) of the PLC in operation. Otherwise, the machine may be damaged and accidents may occur due to erroneous operations.

● In an output circuit, when a load current exceeding the current rating or an overcurrent caused by a load short-circuit flows for a long time, it may cause smoke and fire. To prevent this, configure an external safety circuit, such as a fuse.

● For the operating status of each station after a communication failure of the network, refer to relevant manuals for the network. Incorrect output or malfunction may result in an accident.

[DESIGN PRECAUTIONS]

CAUTION

● After the CPU module is powered on or is reset, the time taken to enter the RUN status varies depending on the system configuration, parameter settings, and/or program size. Design circuits so that the entire system will always operate safely, regardless of this variation in time.

[INSTALLATION PRECAUTIONS]

CAUTION

● Connect the expansion board and expansion adapter securely to their designated connectors. Loose connections may cause malfunctions.

● Connect the extension cables, peripheral device cables, input/output cables and battery connecting cable securely to their designated connectors. Loose connections may cause malfunctions.

● When using an SD memory card, insert it into the SD memory card slot. Check that it is inserted completely. Poor contact may cause malfunction.

● Turn off the power to the PLC before attaching or detaching the following devices. Failure to do so may cause device failures or malfunctions.

- Peripheral devices, expansion board and expansion adapter

- Extension modules, bus conversion module and connector conversion module

- Battery

[WIRING PRECAUTIONS]

CAUTION

● Do not bundle the power line, control line and communication cables together with or lay them close to the main circuit, high-voltage line, load line or power line. As a guideline, lay the power line, control line and connection cables at least 100 mm (3.94") away from the main circuit, high-voltage line, load line or power line. Noise may cause malfunctions.

[STARTUP AND MAINTENANCE PRECAUTIONS]

WARNING

● Do not touch any terminal while the PLC's power is on. Doing so may cause electric shock or malfunctions.

● Before modifying the program in mid-operation, forcing output, running or stopping the PLC, read this manual and the associated manuals carefully and ensure complete safety. An operation error may damage the machinery or cause accidents.

● Do not change the program in the PLC from two or more peripheral equipment devices (such as an engineering tool and a GOT) at the same time. Doing so may cause destruction or malfunction of the PLC program.

● Use the battery for memory backup in conformance to the FX5 User's Manual (Hardware).

- Use the battery for the specified purpose only.

- Connect the battery correctly.

- Do not charge, disassemble, heat, put in fire, short-circuit, connect reversely, weld, swallow or

burn the battery, or apply excessive force (vibration, impact, drop, etc.) to the battery.

- Do not store or use the battery at high temperatures or expose to direct sunlight.

- Do not expose to water, bring near fire or touch liquid leakage or other contents directly. Incorrect handling of the battery may cause excessive heat, bursting, ignition, liquid leakage or deformation, and lead to injury, fire or failures and malfunction of facilities and other equipment.

[PRECAUTIONS IN OPERATION]

CAUTION

● Construct an interlock circuit in the program to ensure safe operation for the whole system when executing control (for data change) of the PLC in operation. Read the manual thoroughly and ensure complete safety before executing other controls (for program change, parameter change, forced output and operation status change) to the PLC in operation. Otherwise, the machine may be damaged and accidents may occur by erroneous operations.

INTRODUCTION

This manual contains text, diagrams and explanations which will guide the reader in the correct installation, safe use and

operation of the FX5 Programmable Controllers and should be read and understood before attempting to install or use the

module.

Always forward it to the end user.

Regarding use of this product

• This product has been manufactured as a general-purpose part for general industries, and has not been designed or

manufactured to be incorporated in a device or system used in purposes related to human life.

• Before using the product for special purposes such as nuclear power, electric power, aerospace, medicine or passenger

movement vehicles, consult Mitsubishi Electric.

• This product has been manufactured under strict quality control. However when installing the product where major

accidents or losses could occur if the product fails, install appropriate backup or failsafe functions in the system.

Note

• If in doubt at any stage during the installation of the product, always consult a professional electrical engineer who is

qualified and trained in the local and national standards. If in doubt about the operation or use, please consult the nearest

Mitsubishi Electric representative.

• Since the examples indicated by this manual, technical bulletin, catalog, etc. are used as a reference, please use it after

confirming the function and safety of the equipment and system. Mitsubishi Electric will accept no responsibility for actual

use of the product based on these illustrative examples.

• This manual content, specification etc. may be changed without a notice for improvement.

• The information in this manual has been carefully checked and is believed to be accurate; however, if you notice a doubtful

point, an error, etc., please contact the nearest Mitsubishi Electric representative. When doing so, please provide the

manual number given at the end of this manual.

MEMO

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

RELEVANT MANUALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

TERMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

PART 1 PROGRAMMING

CHAPTER 1 PROGRAM EXECUTION 16

1.1 Scan Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Initial processing and initialization processing in RUN mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

I/O refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Program operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

END processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

1.2 Scan Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Initial scan time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

1.3 Program Execution Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

1.4 Execution Type of Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Initial execution type program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Scan execution type program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Fixed scan execution type program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Event execution type program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Stand-by type program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

1.5 Program Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Subroutine program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Interrupt program. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

CHAPTER 2 PROCESSING OF OPERATIONS ACCORDING TO CPU MODULE

OPERATI ON STATUS 35

CHAPTER 3 CPU MODULE MEMORY CONFIGURATION 37

3.1 Memory Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Memory configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.2 Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

File type and storage destination memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Executable file operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

PART 2 FUNCTIONS

CHAPTER 4 FUNCTION LIST 42

CHAPTER 5 SCAN MONITORING FUNCTION 44

5.1 Scan time monitoring time setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

5.2 Resetting of the watchdog timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

5.3 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Watchdog timer reset when executing a program repeatedly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Scan time when the WDT instruction is used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

CHAPTER 6 CLOCK FUNCTION 46

6.1 Time Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Clock data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Changing the clock data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Reading clock data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6.2 Setting Time Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

6.3 System clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Special relay used for system clock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Special register used for system clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

CHAPTER 7 ONLINE CHANGE 50

7.1 Online Ladder Block Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Editable contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Range changeable in a single session . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Online ladder block change during the boot operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

CHAPTER 8 INTERRUPT FUNCTION 53

8.1 Multiple Interrupt Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Interrupt priority . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

CONTENTS

CHAPTER 9 PID CONTROL FUNCTION 55

9.1 Outline of Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

9.2 Basic Operation Expressions in PID Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Basic operation expression for PID control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

9.3 How to Use PID Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

9.4 Relationship Between Parameter Setting and Auto-Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

When auto-tuning is not executed (parameter setting) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

When auto-tuning is executed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

9.5 Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

9.6 Details of Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Sampling time (s3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Operation setting (S3)+1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

Input filter constant (s3)+2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Proportional gain (s3)+3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Integral time (s3)+4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

Differential gain (s3)+5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

Differential time (s3)+6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

Alarm output (s3)+24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

9.7 Auto-Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Limit Cycle Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

Step Response Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71

9.8 Examples of Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

System configuration example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

Program example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74

Program example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

Program example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Program example 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Program example 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

CHAPTER 10 CONSTANT SCAN 84

10.1 Constant scan settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

CHAPTER 11 REMOTE OPERATION 86

11.1 Remote RUN/STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Applications of remote RUN/STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Operation during remote RUN/STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Method of execution of remote RUN/STOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

11.2 Remote PAUSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Application of remote PAUSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Method of execution of remote PAUSE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

11.3 Remote RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Application of remote RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Enabling remote RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

Method of execution of remote RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

11.4 Relationship Between Remote Operation and CPU Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

CHAPTER 12 DEVICE/LABEL MEMORY AREA SETTING 92

12.1 Default Capacity of Each Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

12.2 The Setting Range of the Capacity of Each Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

12.3 Device/Label Memory Area Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

12.4 Device Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Range of use of device points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

CHAPTER 13 INITIAL DEVICE VALUE SETTING 97

13.1 Setting Initial Device Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Setting initial device values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

13.2 Applicable Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

CHAPTER 14 LATCH FUNCTION 99

14.1 Types of Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

14.2 Device/label that can be Latched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

14.3 Latch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Latch settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Setting latch on labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

14.4 Clearing of Data of the Latch Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

14.5 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102

CHAPTER 15 MEMORY CARD FUNCTION 103

15.1 SD Memory Card Forced Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

15.2 Boot Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

CHAPTER 16 DEVICE/LABEL ACCESS SERVICE PROCESSING SETTING 107

CHAPTER 17 RAS FUNCTIONS 109

17.1 Self-Diagnostics Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Self-diagnostics timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Check method of error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

CPU Module Operation Upon Error Detection Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Error Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

CHAPTER 18 SECURITY FUNCTIONS 113

CHAPTER 19 BUILT-IN I/O FUNCTION 114

19.1 High-speed Counter Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

High-speed counter function overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

High-speed counter function execution procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

High-speed counter specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Assignment for high-speed counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

High-speed counter parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123

High-speed counter (normal mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124

High-speed counter (pulse density measurement mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126

High-speed counter (rotational speed measurement mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

High-speed comparison table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132

Multiple point output, high-speed comparison tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Special relay list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137

Special relay details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140

Special registers list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148

Special register details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152

Special relays/special registers capable of high-speed transfers with the HCMOV instruction. . . . . . . . . . . . . 161

Precautions when using high-speed counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163

19.2 FX3-compatible high-speed counter function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

FX3-compatible high-speed counter function overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

How to start/stop the high-speed counter using the LC device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165

The elements of the composition of the LC device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

The comparison between the UDCNTF instruction and HIOEN instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Assignment for FX3-compatible high-speed counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167

FX3-compatible high-speed counter setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

FX3-compatible high-speed counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169

Special relay list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171

Special relays/LC devices capable of high-speed transfers with the HCMOV instruction. . . . . . . . . . . . . . . . . 172

Precautions when using FX3-compatible high-speed counters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

19.3 Pulse Width Measurement Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Pulse width measurement function overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Pulse width measurement specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174

Pulse measurement function execution procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175

Pulse width measurement parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

List of special relays/special registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177

Details of special relays/special registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178

Cautions when using the pulse width measurement function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182

Examples of program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

19.4 Pulse Catch Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Outline of pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Specifications of pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Pulse catch function execution procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 184

Pulse catch parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

Operation of pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186

Cautions when using the pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187

19.5 FX3-Compatible Pulse Catch Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Outline of FX3-compatible pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

Specifications of FX3-compatible pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188

CONTENTS

FX3-compatible pulse catch function execution procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

FX3-compatible pulse catch parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 189

Operation of FX3-compatible pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

Cautions when using the FX3-compatible pulse catch function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190

19.6 General-purpose Input Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Outline of general-purpose input functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Specifications of general-purpose inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

General-purpose input function parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 192

19.7 PWM Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

Outline of PWM output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

PWM output specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193

PWM output function execution procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194

PWM output parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

List of Special relays/special registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

Details of special relays/special registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 196

Cautions when using the PWM function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

Examples of program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199

CHAPTER 20 BUILT-IN ANALOG FUNCTION 201

20.1 Function Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

20.2 Analog Input/Output Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Analog input specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

Analog output specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201

List of analog input functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

List of analog output functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202

PART 3 DEVICES/LABELS

CHAPTER 21 DEVICES 204

21.1 List of Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204

21.2 User Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Input (X). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Output (Y) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Internal relay (M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Latch relay (L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Link relay (B) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Annunciator (F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206

Link special relay (SB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

Step relay (S). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208

Timer (T/ST) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209

Counter (C/LC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 212

Data register (D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Link register (W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Link special register (SW) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

21.3 System Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Special relay (SM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

Special register (SD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

21.4 Module Access Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Specification method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

Processing speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216

21.5 Index Registers (Z/LZ). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

Types of index registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

Index register setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217

21.6 File Register (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

21.7 Nesting (N) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218

21.8 Pointer (P) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Global pointers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Label assignment pointers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

21.9 Interrupt Pointer (I) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

Interrupt causes of the interrupt pointer numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

The priority for the interrupt pointer numbers and interrupt factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220

21.10 Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Decimal constant (K) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Hexadecimal constant (H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Real constant (E). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Character string constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

CHAPTER 22 LABELS 222

APPENDIX 224

Appendix 1 Special Relay List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224

Appendix 2 Special Register List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240

Appendix 3 Error Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

Error code system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

Operation when an error occurs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

How to clear errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

List of error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 275

Appendix 4 Parameter List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

System parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

CPU parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 291

Module parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292

Memory card parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297

CONTENTS

INDEX 298

REVISIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301

TRADEMARKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .302

RELEVANT MANUALS

User's manuals for the applicable modules

Manual name <manual number> Description

MELSEC iQ-F FX5 User's Manual (Startup) <JY997D58201>

MELSEC iQ-F FX5U User's Manual (Hardware) <JY997D55301>

MELSEC iQ-F FX5UC User's Manual (Hardware) <JY997D61401>

MELSEC iQ-F FX5 User's Manual (Application) <JY997D55401> (This manual)

MELSEC iQ-F FX5 Programming Manual (Program Design) <JY997D55701>

MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks) <JY997D55801>

MELSEC iQ-F FX5 User's Manual (Serial Communication) <JY997D55901>

MELSEC iQ-F FX5 User's Manual (MODBUS Communication) <JY997D56101>

MELSEC iQ-F FX5 User's Manual (Ethernet Communication) <JY997D56201>

MELSEC iQ-F FX5 User's Manual (SLMP) <JY997D56001>

MELSEC iQ-F FX5 User's Manual (Positioning Control) <JY997D56301>

MELSEC iQ-F FX5 User's Manual (Analog Control) <JY997D60501>

GX Works3 Operating Manual <SH-081215ENG>

Performance specifications, procedures before operation, and troubleshooting of the CPU module.

Describes the details of hardware of the FX5U CPU module, including input/output specifications, wiring, installation, and maintenance.

Describes the details of hardware of the FX5UC CPU module, including input/output specifications, wiring, installation, and maintenance.

Describes basic knowledge required for program design, functions of the CPU module, devices/labels, and parameters.

Describes specifications of ladders, ST, FBD/LD, and other programs and labels.

Describes specifications of instructions and functions that can be used in programs.

Describes N:N network, MELSEC Communication protocol, inverter communication, non-protocol communication, and predefined protocol support.

Describes MODBUS serial communication.

Describes the functions of the built-in Ethernet port communication function.

Explains methods for the device that is communicating with the CPU module by SLMP to read and write the data of the CPU module.

Describes the built-in positioning function.

Describes the analog function.

System configuration, parameter settings, and online operations of GX Works3.

TERMS

Unless otherwise specified, this manual uses the following terms.

•  indicates a variable portion used to collectively call multiple models or versions.

(Example) FX5U-32MR/ES, FX5U-32MT/ES  FX5U-32M/ES

• For details on the FX3 devices that can be connected with the FX5, refer to FX5 User’s Manual (Hardware).

Ter ms Description

■Devices

FX5 Generic term for FX5U and FX5UC PLCs

FX3 Generic term for FX3S, FX3G, FX3GC, FX3U, and FX3UC PLCs

FX5 CPU module Generic term for FX5U CPU module and FX5UC CPU module

FX5U CPU module Generic term for FX5U-32MR/ES, FX5U-32MT/ES, FX5U-32MT/ESS, FX5U-64MR/ES, FX5U-64MT/ES,

FX5UC CPU module Generic term for FX5UC-32MT/D and FX5UC-32MT/DSS

Extension module Generic term for FX5 extension modules and FX3 function modules

• FX5 extension module Generic term for I/O modules, FX5 extension power supply module, and FX5 intelligent function module

• FX3 extension module Generic term for FX3 extension power supply module and FX3 intelligent function module

Extension module (extension cable type) Input modules (extension cable type), Output modules (extension cable type), Bus conversion module

Extension module (extension connector type) Input modules (extension connector type), Output modules (extension connector type), Input/output

I/O module Generic term for input modules, output modules, Input/output modules, and powered input/output modules

Input module Generic term for Input modules (extension cable type) and Input modules (extension connector type)

• Input module (extension cable type) Generic term for FX5-8EX/ES and FX5-16EX/ES

FX5U-64MT/ESS, FX5U-80MR/ES, FX5U-80MT/ES, and FX5U-80MT/ESS

(extension cable type), and Intelligent function modules

modules, Bus conversion module (extension connector type), and Connector conversion module (extension connector type)

Term s Description

• Input module (extension connector type) Generic term for FX5-C32EX/D and FX5-C32EX/DS

Output module Generic term for output modules (extension cable type) and output modules (extension connector type)

• Output module (extension cable type) Generic term for FX5-8EYR/ES, FX5-8EYT/ES, FX5-8EYT/ESS, FX5-16EYR/ES, FX5-16EYT/ES, and FX5-16EYT/ESS

• Output module (extension connector type) Generic term for FX5-C32EYT/D and FX5-C32EYT/DSS

Input/output modules Generic term for FX5-C32ET/D and FX5-C32ET/DSS

Powered input/output module Generic term for FX5-32ER/ES, FX5-32ET/ES, and FX5-32ET/ESS

Extension power supply module Generic term for FX5 extension power supply module and FX3 extension power supply module

• FX5 extension power supply module Different name for FX5-1PSU-5V

• FX3 extension power supply module Different name for FX3U-1PSU-5V

Intelligent module The abbreviation for intelligent function modules

Intelligent function module Generic term for FX5 intelligent function modules and FX3 intelligent function modules

• FX5 intelligent function module Generic term for FX5 intelligent function modules

• FX3 intelligent function module Different name for FX3 special function blocks

Simple motion module Different name for FX5-40SSC-S

Expansion board Generic term for board for FX5U CPU module

• Communication board Generic term for FX5-232-BD, FX5-485-BD, and FX5-422-BD-GOT

Expansion adapter Generic term for adapter for FX5 CPU module

• Communication adapter Generic term for FX5-232ADP and FX5-485ADP

• Analog adapter Generic term for FX5-4AD-ADP and FX5-4DA-ADP

Bus conversion module Generic term for Bus conversion module (extension cable type) and Bus conversion module (extension

connector type)

• Bus conversion module (extension cable

type)

• Bus conversion module (extension connector

type)

Battery Different name for FX3U-32BL

SD memory card Generic term for NZ1MEM-2GBSD, NZ1MEM-4GBSD, L1MEM-2GBSD and L1MEM-4GBSD SD memory

Peripheral device Generic term for engineering tools and GOTs

GOT Generic term for Mitsubishi Graphic Operation Terminal GOT1000 and GOT2000 series

■Software packages

Engineering tool The product name of the software package for the MELSEC programmable controllers

GX Works3 The product name of the software package, SWnDND-GXW3, for the MELSEC programmable controllers

■Manuals

User's manual Generic term for separate manuals

• User's manual (Startup) Abbreviation of MELSEC iQ-F FX5 User's Manual (Startup)

• FX5 User's manual (Hardware) Generic term for MELSEC iQ-F FX5U User's Manual (Hardware) and MELSEC iQ-F FX5UC User's Manual

• FX5U User's manual (Hardware) Abbreviation of MELSEC iQ-F FX5U User's Manual (Hardware)

• FX5UC User's manual (Hardware) Abbreviation of MELSEC iQ-F FX5UC User's Manual (Hardware)

• User's manual (Application) Abbreviation of MELSEC iQ-F FX5 User's Manual (Application)

Programming manual (Program Design) Abbreviation of MELSEC iQ-F FX5 Programming Manual (Program Design)

Programming manual (Instructions, Standard Functions/Function Blocks)

Communication manual Generic term for MELSEC iQ-F FX5 User's Manual (Serial Communication), MELSEC iQ-F FX5 User's

• Serial communication manual Abbreviation of MELSEC iQ-F FX5 User's Manual (Serial Communication)

• MODBUS communication manual Abbreviation of MELSEC iQ-F FX5 User's Manual (MODBUS Communication)

• Ethernet communication manual Abbreviation of MELSEC iQ-F FX5 User's Manual (Ethernet Communication)

• SLMP manual Abbreviation of MELSEC iQ-F FX5 User's Manual (SLMP)

Positioning manual Abbreviation of MELSEC iQ-F FX5 User's Manual (Positioning Control)

Analog manual Abbreviation of MELSEC iQ-F FX5 User's Manual (Analog Control)

Different name for FX5-CNV-BUS

Different name for FX5-CNV-BUSC

cards Abbreviation of Secure Digital Memory Card. Device that stores data using flash memory.

(The 'n' represents a version.)

(Hardware)

Abbreviation of MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks)

Manual (MODBUS Communication), MELSEC iQ-F FX5 User's Manual (Ethernet Communication), and MELSEC iQ-F FX5 User's Manual (SLMP)

MEMO

PART 1 PROGRAMMING

This part consists of the following chapters.

1 PROGRAM EXECUTION

2 PROCESSING OF OPERATIONS ACCORDING TO CPU MODULE OPERATION STATUS

3 CPU MODULE MEMORY CONFIGURATION

PART 1

1 PROGRAM EXECUTION

Inside the CPU module

Scan configuration

Program operations

END processing

Initial processing/RUN time initialization processing

I/O refresh

1.1 Scan Configuration

The configuration of the scan of the CPU module is explained below.

Initial processing and initialization processing in RUN mode

Initial processing according to CPU module status and initialization processing in the RUN status are explained below. : Execute, : Do not execute

Processing item CPU module status

At power ON At reset STOPRUN after

write to PLC

Initialization of input/output module 

Boot from SD memory card 

CPU parameter check 

System parameter check 

Initialization of device/label outside latch range (bit device: OFF, word device: 0)

Assignment of I/O numbers of input/output module

Setting of module parameters 

Setting of device 

*1 Indicates an instance of power OFFON or setting to RUN status without a reset after modifying parameters or program in STOP

status.





At STOPRUN

1 PROGRAM EXECUTION

1.1 Scan Configuration

I/O refresh

Execute I/O refresh before starting program operations.

• Input ON/OFF data input from input module/intelligent function module to CPU module

• Output ON/OFF data input from CPU module to output module/intelligent function module

When executing constant scan, I/O refresh is executed after the constant scan waiting time ends.

Program operations

Step 0 of each program up to the END/FEND instruction is executed according to program settings. This program is called the "main routine." Main routine programs can be divided into subroutines. (Page 29 Subroutine program)

END processing

END processing involves the following processes:

• Refreshing of network modules

• Refreshing of intelligent function modules

• Instruction termination processing

• Device/label access service processing

• Resetting of the watchdog timer

• Self-diagnostic processing

• Setting of values to special relays/special registers (set timing: when END processing is executed)

1 PROGRAM EXECUTION

1.1 Scan Configuration

1.2 Scan Time

I/O refresh

Program operations

END processing

RUN time

Scan time

RUN time initialization processing*1

The CPU module repeats the following processing. The scan time is the sum total of each process and execution time.

*1 This process is included in the initial scan time.

Initial scan time

This refers to the initial scan time when the CPU module is in the RUN mode.

How to check the initial scan time

The initial scan time can be checked by the following information:

• Value stored in SD518 (initial scan time (ms)), SD519 (initial scan time (s))

• Program list monitor (GX Works3 Operating Manual)

Monitoring the initial scan time

The initial scan time is monitored by the initial scan time execution monitor time. (5 SCAN MONITORING FUNCTION)

■Initial scan time execution monitor time precautions

• Set an initial execution monitor time longer then the execution time of the initial scan time. An error occurs when the initial

scan time exceeds the set initial execution monitor time.

• The measurement error margin of the initial scan execution monitor time is 10 ms. For example, if the initial execution

monitor time (t) is set to 100 ms, an error occurs in the initial scan time in the range 100 ms < t < 110 ms range.

1 PROGRAM EXECUTION

1.2 Scan Time

1.3 Program Execution Sequence

STOP/PAUSE→RUN

END processing

Initial execution

type program

Scan execution

type program

Event execution

type program

Fixed scan

execution type

program

Standby type

program

Exists

Does not exist

Does an initial execution type

program exist?

When the CPU module enters the RUN status, the programs are executed successively according to the execution type of the

programs and execution order setting.

When the execution type of the programs is the same, the programs are executed in the order in which the

execution order was set.

1 PROGRAM EXECUTION

1.3 Program Execution Sequence

1.4 Execution Type of Program

Ex.

When an initial execution type program is used

Program A

Program B

Control by one program

Initial execution type program

Scan execution type program

One program can be divided into initial execution type and scan execution type program.

Processing performed

only once

Processing performed

in every scan

1st scan 2nd scan 3rd scan

STOP/PAUSE→RUN

END processing

Initial execution type program A

Initial execution type program B

Scan execution type program

Initial execution type program C

0 END

END

0END 0END

Initial scan time is the sum of the execution time of initial execution type programs and the END processing time.

Set the program execution conditions.

Initial execution type program

This program type is executed only once when the CPU module changes from the STOP/PAUSE to the RUN status. This

program type is used for programs, that do not need to be executed from the next scan once they are executed, like initial

processing on an intelligent function module.

Also, the execution time of initial execution type programs is the same as the initial scan time.

When multiple initial execution type programs are executed, the execution time of the initial execution type programs

becomes the time until execution of all initial execution type programs is completed.

Precautions

The precautions for initial execution type programs are explained below.

■Restrictions in programming

With initial execution type programs, do not use instructions that require several scans to complete execution (instructions for

which completion devices exist).

e.g. RBFM and WBFM instructions

1 PROGRAM EXECUTION

1.4 Execution Type of Program

Scan execution type program

1st scan 2nd scan 3rd scan 4th scan

STOP/PAUSE→RUN

END processing

Initial execution type program

Scan execution type program A

Scan execution type program C

Scan execution type program B

Scan time

0 END

END

0 END

Fixed scan interval

END processing

Scan execution type program

Fixed scan execution type program

Condition established

This program type is executed only once per scan from the scan following the scan where an initial execution type program

was executed.

When multiple scan execution type programs are executed, the execution time of the scan execution type programs becomes

the time until execution of all scan execution type programs is completed. Note, however, that when an program/event

execution type program is executed before a scan execution type program is completed, the execution time of these

programs is included in the scan time.

Fixed scan execution type program

An interrupt program which is executed at a specified time interval. Different from the normal interrupt program, this type of

program does not require interrupt pointer (I) and IRET instruction to be written (pointer is assigned by parameter). Execution

is performed by program file basis.

You can use 4 files of fixed scan execution type programs at the maximum.

To execute a fixed scan execution type program, the EI instruction must be used to enable interrupts.

1 PROGRAM EXECUTION

1.4 Execution Type of Program

Make the following settings for fixed scan execution type program in CPU parameter.

Window

Displayed items

Window

Displayed items

• Interrupt pointer setting (Interrupt from internal timer: I28 to I31)

• Fixed scan interval setting

Interrupt pointer setting

The interrupt pointer (Interrupt from internal timer: I28 to I31) assigned to a fixed scan execution type program is set up.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Program Setting"  "Program Setting" 

"Detailed Setting"  "Detailed Setting Information"

1. Open program setting screen.

2. Set type as fixed scan.

3. Specify interrupt pointer.

Item Description Setting range Default

Interrupt Pointer Set the interrupt pointer which is assigned to fixed scan

execution type program.

Specified Time Intervals Fixed scan interval setting value is displayed.

Setup is performed on another screen. (Page 22 Fixed scan interval setting)

•I28

•I29

•I30

•I31



I31

Fixed scan interval setting

Sets the fixed scan interval setting of the fixed scan execution type program. (It is the same as setting for interrupt from

internal timer.)

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Interrupt Settings"  "Fixed Scan Interval

Setting"

Item Description Setting range Default

Interrupt Setting from Internal Timer

1 PROGRAM EXECUTION

1.4 Execution Type of Program

I28 Sets the execution interval of I28. 1 to 60000 ms (1 ms units) 100 ms

I29 Sets the execution interval of I29. 1 to 60000 ms (1 ms units) 40 ms

I30 Sets the execution interval of I30. 1 to 60000 ms (1 ms units) 20 ms

I31 Sets the execution interval of I31. 1 to 60000 ms (1 ms units) 10 ms

Action when the execution condition is satisfied

Fixed scan interval

END processing

Scan execution type program

Fixed scan execution type program

Condition established

Constant scan

Waiting time

Performs the following action.

■If the execution condition is satisfied before the interrupt is enabled by the EI instruction

The program enters the waiting status and is executed when the interrupt is enabled. Note that if the execution condition for

this fixed scan execution type program is satisfied more than once during the waiting status, the program is executed only

once when the interrupt is enabled.

■When there are two or more fixed scan execution type programs

When the specified time intervals expire in the same timing, the programs are executed in order according to the priority (I31

> I30 > I29 > I28) of the periodic interrupt pointer.

■If another or the same execution condition is satisfied while the fixed scan execution type program is being executed

Operates according to the fixed scan execution mode setting.

■If the execution condition is satisfied while the interrupt is disabled by the system

Operates according to the fixed scan execution mode setting.

■When an interrupt is generated during a standby while executing constant scan

Executes the fixed scan execution type program.

*1 If processing does not finish during the waiting time, the scan time is extended.

■If another interrupt occurs while the fixed scan execution type program is being executed

If an interrupt program is triggered while the fixed scan execution type program is being executed, the program operates in

accordance with the interrupt priority.

Processing when the fixed scan execution type program starts

The same processing as when the interrupt program starts. (Page 34 Processing at startup of interrupt program)

Fixed scan execution mode

If execution condition for a fixed scan execution type program and fixed cycle interrupt (I28 to I31) based on the internal timer

of the CPU module is satisfied while interruption is disabled, the operation of the program execution after interruption

becomes allowed is specified. However, if execution condition is satisfied while interruption is set to be disabled because of a

DI instruction or the like, this is out of the scope of the fixed scan execution mode.

"Interrupts disabled" refers to the following:

• A program having an interrupt priority higher than or the same as the corresponding program is currently

being executed.

• The corresponding program is currently being executed.

• Program execution is currently at a part in which interrupts are disabled by the system.

1 PROGRAM EXECUTION

1.4 Execution Type of Program

■Operation in the fixed scan execution mode

Window

Displayed items

[1]

Execution condition satisfied: 6 times

Cycle interval of TEISYU

"TEISYU" (Fixed scan execution type program)

Number of executions: 6 times

All pending executions are executed and the number of executions of the fixed scan is guaranteed. (In the chart, three executions are made immediately after interruption becomes allowed [1]).

Section where interruptions

are disabled

Section where interruptions

are disabled

Execution condition satisfied: 6 times

Delay behind the cycle

Cycle interval of TEISYU

"TEISYU" (Fixed scan execution type program)

Number of executions: 4 times

The program is executed once, and the fixed period execution of the program is maintained. (Even if execution condition was satisfied twice or more, only one execution is made.)

This section describes the operation which can be performed in the fixed scan execution mode.

• Execution Count Takes Priority

The program is executed for all the pending number of executions so that it can be executed the same number of times as

execution condition was satisfied.

• Precede Fixed Scan

When the waiting for execution , one execution is made when interrupt becomes allowed. Even if execution condition was

satisfied twice or more, only one execution is performed.

■Fixed scan execution mode setting

Use the fixed scan execution mode setting.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Interrupt Settings"  "Fixed Scan Execution

Mode Setting"

Item Description Setting range Default

Fixed Scan Execution Mode

For Precede Fixed Scan, the periodicity of the program is maintained. For Execution Count Takes Priority, the program is executed for all pending number of executions.

• Precede Fixed Scan

• Execution Count Takes Priority

Precede Fixed Scan

1 PROGRAM EXECUTION

1.4 Execution Type of Program

Event execution type program

Y50

10 ms

1st scan

I60 interrupt occurs

2nd scan 3rd scan 4th scan 5th scan

STOP/PAUSE→RUN

Scan execution type program A

END processing

Scan execution type program B

Execution order

Y50 turns ON

Event execution type program E (Executed when 10 ms elapses)

Event execution type program D (Executed when I60 interrupt occurs)

Event execution type program C (Executed when Y50 turns ON)

(1)

1st scan

I60 interrupt occurs

2nd scan 3rd scan

STOP/PAUSE→RUN

Scan execution type program A

END processing

Scan execution type program B

Execution order

Event execution type program C (Executed when I60 interrupt occurs)

Execution of this program type is triggered by a user-specified event. (Page 25 Trigger type)

*1 Measurement of elapsed time is 10 ms or more because it is determined depending on the scan time.

Trigger type

Triggers for event execution type programs are explained below. (Page 27 Trigger setting)

■Generation of interrupt by interrupt pointer (I)

The program is executed once, immediately, when a specified interrupt cause is generated. An interrupt pointer label can be

appended by adding the FEND instruction to a different program, and the program description partitioned by the IRET

instruction can be turned into an exclusive program.

(1) Event execution type program C is executed immediately when the specified event is generated.

• Specifiable interrupt pointer (I)

Specifiable interrupt pointers are I0 to I15, I16 to I23, and I50 to I177.

Execution conditions for the event execution type program which is triggered by interrupt occurred by the interrupt pointer (I) are the same as those for general interrupt programs. (Page 31 Operation when an

interrupt is generated)

1 PROGRAM EXECUTION

1.4 Execution Type of Program

■Bit data ON (TRUE)

Y50

(1)

1st scan 2nd scan 3rd scan 4th scan

STOP/PAUSE→RUN

Scan execution type program A

END processing

Scan execution type program B

Execution order

Y50 is the ON interval

Y50 turns OFFY50 turns ON

Event execution type program C (Executed when Y50 turns ON)

10 ms 10 ms

(1)

1st scan 2nd scan 3rd scan 4th scan

STOP/PAUSE→RUN

Scan execution type program A

END processing

Scan execution type program B

Execution order

Measurement interval

Event execution type program C (Executed when 10 ms elapses)

Specified time 10 ms has passed

When it is the turn of the corresponding program to be executed, the program is executed if the specified bit data is ON. This

eliminates the need for creating a program for monitoring triggers in a separate program.

(1) The program is executed if Y50 is ON when it is the turn of event execution type program C to be executed.

Applicable devices are as follows.

Item Description

Device

Bit device X (DX), Y, M, L, F, SM, B, SB

Bit specification in word device D, SD, W, SW, R, U\G

*1 Indexed devices cannot be specified.

■Elapsed time

The program is executed once when it is the turn of the corresponding program to be executed first after the CPU module is

run and the specified time has elapsed. For second execution onwards, the time is re-calculated from the start of the previous

event execution type program. When it is the turn of the corresponding program to be executed first after specified time has

elapsed, program execution is repeated. Output (Y) currently used in the corresponding program and the current values of

timer (T) can be cleared at the next scan following execution of the corresponding program. This will not be always executing

an interrupt at a constant cycle but can be used when executing a specified program after a specified time has elapsed.

(1) When it is the turn of the first execution after the specified time has elapsed, event execution type program C is executed.

Output and timer current values are not cleared even when the program is set so that output and timer current

values are cleared, if the scan time is longer than the elapsed time set value.

1 PROGRAM EXECUTION

1.4 Execution Type of Program

Trigger setting

Operating procedure

Displayed items

Use the event execution type detail setting.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Program Setting"

"Program Setting" window

"Detailed Setting" window

1. Click "Detailed Setting" on the Program Setting.

2. Select the program name and set the execution type to

"Event".

3. Click "Detailed Setting Information".

"Event Execution Type Detailed Setting" window

Item Description Setting range Default

Interruption Occurrence Sets the interrupt pointer used as the trigger. I0 to I23, I50 to I177 

ON of Bit Data (TRUE) Sets the device used as the trigger. Page 26 Bit data ON (TRUE) 

Passing Time Sets the elapsed time. • When "ms" is selected: 1 to

4. Set the trigger type to execute the event execution type

program.



65535 ms (in 1 ms units)

• When "s" is selected: 1 to 65535 s (in 1 s units)

When "Clear Output and Current Value of Timer" is enabled together with "ON of Bit Data (TRUE)" or

"Passing Time", the current values of the output (Y) and timer (T) of this program can be cleared at the first

execution turn of this program that comes after the trigger turns OFF.

1 PROGRAM EXECUTION

1.4 Execution Type of Program

Stand-by type program

P100

Scan execution type program Scan execution type program

Stand-by type program

Main routine program

Subroutine program

Interrupt program

Main routine program

Subroutine program

Interrupt program

This program is executed only when there is an execution request.

Saving programs in library

Subroutine programs or interrupt programs are saved as standby type programs so that they can be used when controlled

separately from the main routine program. Multiple subroutine programs and interrupt programs can be created in one

standby type program.

How to execute

Execute standby type programs as follows.

• Create sub-routine programs and interrupt programs in the standby type program which is called up by a pointer, etc. or

when an interrupt is generated.

1 PROGRAM EXECUTION

1.4 Execution Type of Program

1.5 Program Type

RET

END

RET

Y12

RET

Y11

FEND

Y10

Subroutine program 1

Subroutine program 2

Subroutine program 3

Pointer

Main routine program

Programs that use pointers (P) or interrupt pointers (I) are explained below.

Subroutine program

This is the program from pointer (P) up to the RET instruction. Subroutine programs are executed only when they are called

by the CALL instruction. Pointer type labels also can be used instead of pointers (P). The applications of subroutine programs

are as follows:

• By grouping programs that are executed multiple times in one scan into a single subroutine program, the number of steps

in the entire program can be reduced.

• A program that is executed only under certain conditions can be saved as a subroutine program which shortens the scan

time proportionately.

Precautions

The precautions when using subroutine programs are explained below.

• Do not use timers (T, ST). Note, however, that timers can be used when a timer coil (OUT T instruction) is always

executed only once in one scan.

• An error occurs when program execution returns to the call source program and the program is terminated without using

the RET instruction.

• An error occurs when there is no pointer (P) or pointer type global label in FB or FUN.

• Subroutine programs can also be managed as separate programs by turning them into standby type

programs. (Page 28 Stand-by type program)

• Pointers need not be programmed starting with the smallest number.

1 PROGRAM EXECUTION

1.5 Program Type

Interrupt program

I29

Main routine program

I0 interrupt program

I29 interrupt program

Indicates the end of the main routine program.

Interrupt pointer

IRET

END

FEND

Y13

Y12

Y11

Y10

Main routine program

I0 interrupt program

I29 interrupt program

Execution Execution

Execution

IRET

Interrupt occurs for I0

Interrupt occurs for I29

Time

This is the program from interrupt pointer (I) up to the IRET instruction.

When an interrupt is generated, the interrupt program corresponding to that interrupt pointer number is executed. Note,

however, that interrupt enabled status must be set with the EI instruction before executing the interrupt program.

• Only one interrupt program can be created with one interrupt pointer number.

• Interrupt pointers need not be programmed starting with the smallest number.

• Interrupt programs can also be managed as separate programs by turning them into standby type

programs. (Page 28 Stand-by type program)

1 PROGRAM EXECUTION

1.5 Program Type

Operation when an interrupt is generated

Main routine program

Not executed because the interrupt program execution is in disabled status (DI).

Executed as soon as the interrupt program execution status changes to enabled.

Interrupt Program

Interrupt occurrence Enable Interrupt (EI)

Execution

Executed as soon as PAUSE → RUN and the interrupt program execution status changes to enabled.

Not executed because the CPU module is in the STOP status.

Interrupt occurrence Enable Interrupt (EI)

Execution

Main routine program

Interrupt Program

PAUSE→ RUN

Main routine program

I0 interrupt program

Enable Interrupt (EI)

Simultaneous occurrence of multiple interrupt factors

Execution

I10 interrupt program

Execution

Wait status

I16 interrupt program

Priority

rank

IRET

I0 I10

I16

Execution

Higher

Lower

Operation when an interrupt is generated is explained below.

■If an interrupt cause occurs when interrupt is disabled (DI)

The interrupt that was generated is stored, and the stored interrupt program is executed the moment that the status changes

to interrupt enabled. An interrupt is stored only once even if the same interrupt is generated multiple times. Note, however,

that all interrupts cause are discarded when interrupt disable is specified by the IMASK and SIMASK instructions.

■When an interrupt cause is generated by a PAUSE status

The interrupt program is executed the moment that the CPU module changes to the RUN status and the status changes to

interrupt enabled. An interrupt is stored only once when the same interrupt is generated multiple times before the CPU

module changes to the RUN status.

■When multiple interrupts are generated at the same time while in an interrupt enabled status

Interrupt programs are executed in order starting from program having the highest priority. Interrupt programs also run in order

of priority rank when multiple interrupt programs having the same priority are generated simultaneously.

■When an interrupt is generated during standby while executing constant scan

The interrupt program for that interrupt is executed.

■When another interrupt is generated during execution of the interrupt program

If an interrupt such as a fixed scan execution type program (including an interrupt which triggers the event execution type

program) is triggered while an interrupt program is being executed, the program operates in accordance with the interrupt

priority.

1 PROGRAM EXECUTION

1.5 Program Type

■If an interrupt cause with the same or a lower priority occurs while the interrupt program is

Time

Main routine program

I0 interrupt program

I50 interrupt program

I80 interrupt program

I100 interrupt program

I100 I80 I50 I100 I80 I50

The second interruption cause and later causes that occur during the execution of an interruption are not memorized.

After the interruption being executed is completed, the interruptions are executed from I0, which has higher priority level. I50, which has higher priority rank, is executed ahead of I80, which has the same priority.

I80 is executed. (I50 is not executed for the second time.)

I100 is executed. (I80 is not executed for the second time.)

Higher

Lower

Priority

rank

I31

Time

Main routine program

Higher

Lower

I31 interrupt program

* The priority is the same.

I29 interrupt program

I28 interrupt program

I28 I29 I28

When "Execution Count

Takes Priority" is set

When "Precede Fixed Scan" is set

I29

TO A

TO B

The second and following interruption causes, which occur while an interruption is executed, operate according to the setting of the fixed scan execution mode.

After the interruption being executed is completed, I29, which has higher priority, is executed.

The second interruption is not executed.

The second interruption is executed.

Priority

rank

being executed

• For I0 to I23 and I50 to I177

The occurred interrupt cause is memorized, and the interrupt program corresponding to the factor will be executed after the

running interrupt program finishes. Even if the same interrupt factor occurs multiple times, it will be memorized only once.

• For I28 to I31

The interrupt cause that occured is memorized, and the interrupt program corresponding to the cause will be executed after

the running interrupt program finishes. If the same interrupt cause occurs multiple times, it will be memorized once but operation at the second and later occurrences depends on setting of the fixed scan execution mode. (Page 23 Fixed scan

execution mode)

When "Execution Count Takes Priority" is enabled, the interrupt program corresponding to the memorized interrupt causes will

be executed after the running interrupt program finishes. When "Precede Fixed Scan" is enabled, the second and later

occurrences will not be memorized.

1 PROGRAM EXECUTION

1.5 Program Type

■If the same interrupt cause occurs while the interrupt program is being executed

Window

Displayed items

Time

Main routine program

I0 interrupt program

I0 I0

The second and following interrupt causes, which occur while an interruption executed, are not saved.

After the interruption being executed is completed, the first interrupt program is executed.

I31

Time

Main routine program

I31 interrupt program

I31 I31

When "Execution Count

Takes Priority" is set

When "Precede Fixed Scan" is set

The second and following interruption causes, which occur while an interruption is executed, operate according to the setting of the fixed scan execution mode.

The second interruption is not executed.

The second interruption is executed.

• For I0 to I23 and I50 to I177

The interrupt cause that occured is memorized, and the interrupt program corresponding to the cause will be executed after

the running interrupt program finishes. Even if the same interrupt cause occurs multiple times, it will be memorized only once.

• For I28 to I31

The interrupt cause is memorized, and the interrupt program corresponding to the cause will be executed after the running

interrupt program finishes. If the same interrupt factor occurs multiple times, it will be memorized once but operation at the second and later occurrences depends on setting of the fixed scan execution mode. (Page 23 Fixed scan execution

mode)

When "Execution Count Takes Priority" is enabled, the interrupt program corresponding to the memorized interrupt cause will

be executed after the running interrupt program finishes. When "Precede Fixed Scan" is enabled, the second and later

occurrences will not be memorized.

Setting the interrupt cycle

Set the interrupt cycle of interrupts I28 to I31 using the internal timer of the interrupt pointer.

Item Description Setting range Default

Interrupt Setting from Internal Timer

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Interrupt Settings"  "Fixed Scan Interval

Setting"

I28 Sets the execution interval of I28. 1 to 60000 ms (1 ms units) 100 ms

I29 Sets the execution interval of I29. 1 to 60000 ms (1 ms units) 40 ms

I30 Sets the execution interval of I30. 1 to 60000 ms (1 ms units) 20 ms

I31 Sets the execution interval of I31. 1 to 60000 ms (1 ms units) 10 ms

1 PROGRAM EXECUTION

1.5 Program Type

Processing at startup of interrupt program

Processing is as follows when an interrupt program is started up.

• Purge/restore of index registers (Z, LZ)

■Purge/restore of index registers (Z, LZ)

When an interrupt program is started up, the values of the index registers (Z, LZ) in the currently executing program are

purged, and those values are handed over to the interrupt program. Then, when an interrupt program is terminated, the

purged values are restored to the currently executing program.

Precautions

The precautions for interrupt programs are explained below.

■Restrictions in programming

• The PLS/PLF instructions execute OFF processing at the scan following instruction execution. ON devices remain ON until

the interrupt program runs again and the instruction is executed.

• Only a routine timer can be used in an interrupt program. Timers (T, ST) cannot be used.

■Splitting of data

Processing may be interrupted during instruction execution and an interrupt programs can be executed. Accordingly, splitting

of data might occur if the same devices are used by both the interrupt program and the program that is aborted by the

interrupt. Implement the following preventive measure.

• Set instructions that will result in inconsistencies if interrupted to "interrupt disabled" using the DI instruction.

• When using bit data, ensure that the same bit data is not used by both the interrupt program and the program that is

aborted by the interrupt.

■Interrupt precision is not improved

If interrupt precision is not improved, this might be remedied by implementing the following:

• Give higher priority to the interrupt that needs higher precision.

• Use an interrupt pointer with high interrupt priority order.

• Recheck the section of interruption disabled.

1 PROGRAM EXECUTION

1.5 Program Type

2 PROCESSING OF OPERATIONS ACCORDING

TO CPU MODULE OPERATION STATUS

The CPU module has three operation statuses as follows:

• RUN status

• STOP status

• Paused

Processing of operations on the CPU module in each status is explained below.

Processing of operations in RUN status

In the RUN mode, operations in the sequence program are executed repeatedly in order step 0END (FEND)

instructionstep 0.

■Output when CPU module enters RUN mode

Operation results are output after the sequence program is executed for the duration of one scan.

The device memory other than the output (Y) holds the state immediately before the RUN state. However, if device initial

value is set up, this initial value is set.

■Processing time until start of operation

The processing time from the CPU module switching from STOPRUN up to start of execution of operations in the sequence

program fluctuates according to the system configuration and parameter settings. (Normally, this time is within one second.)

Processing of operations in STOP status

In the STOP status, execution of operations in the sequence program is stopped by the RUN/STOP/RESET switch or a

remote stop. The CPU module also enters the STOP status when a stop error occurs.

■Output when CPU module enters STOP status

When the CPU module enters the STOP status, all output points (Y) turn OFF. For device memory other than outputs (Y),

non-latch devices are cleared and latch devices are held.

However, when SM8033 is on and CPU module switches RUNSTOP, it is possible to hold an output state and the current

value of a device.

Processing of operations in paused status

In a paused status, execution of operations in the sequence program is stopped after one scan execution but with outputs and

device memory states held, by a remote pause.

2 PROCESSING OF OPERATIONS ACCORDING TO CPU MODULE OPERATION STATUS

Processing of operations by the CPU module during switch operations

Processing of operations by the CPU module is as follows according to the RUN or STOP mode.

RUN/STOP status Processing of operations by CPU module

Processing of operations in sequence program

RUNSTOP The program is executed up to

the END instruction and then stops.

STOPRUN Program execution starts from

step 0.

The CPU module performs the following processing regardless of RUN or STOP status or paused status.

• Refreshing of input/output modules

• Automatic refreshing of intelligent function modules

• Self-diagnostic processing

• Device/label access service processing

• Setting of values to special relays/special registers (set timing: when END processing is executed)

For this reason, the following operations can be performed even in the STOP status or paused status:

• Monitoring of I/O or test operations by the engineering tool

• Reading/writing from external device using SLMP

• N:N Network

• MODBUS RTU slave

External output Device memory

Other than Y Y

All output points turn OFF. Latch devices are held, and

non-latch devices are cleared.

Operation results are output after the PLC is run for the duration of one scan.

The states of device memories immediately before the CPU module entered the RUN mode are held. Note, however, that when device initial values are set, the device initial values are set.

All output points turn OFF.

Operation results are output after the PLC is run for the duration of one scan.

2 PROCESSING OF OPERATIONS ACCORDING TO CPU MODULE OPERATION STATUS

3 CPU MODULE MEMORY CONFIGURATION

3.1 Memory Configuration

CPU module memory is explained below.

Memory configuration

The configuration of CPU module memory is explained below.

Memory type Application

CPU built-in memory Data memory The following files are stored in this memory:

• Program files, FB files

• Restored information files

• Parameter files

• Files that contain device comments, etc.

Device/label memory Data areas for internal devices/labels, etc. are located in this memory.

SD memory card This is for storing files that contain device comments, etc. and folders and files that are created

by SD memory card functions.

Data memory

The following files are stored in data memory.

Category File type Max. number of files Storage area size Remarks

Program Program file 32 1 Mbytes 

FB files 16 (Up to 15 for user) 

Restored information Restored information files 48 1 Mbytes 

Parameters Parameter files common to system 1 1 Mbytes 

CPU parameter file 1 

Module parameter file 1 

Remote password 1 

Global label setting file 1 

Module extension parameter (for protocol setting) 2 

Device initial values file 1 

Comments Device comment file 1 2 Mbytes 

Device/label memory

Device/label memory has the following areas.

Area Storage area size Application

Device/label memory (standard) 96 Kbytes R, W, SW, labels, and latch labels can be placed in this memory in variable lengths.

R and W can be backed up in the event of a power interruption only when the optional battery is installed. Also, latch label capacity can be increased when the battery is installed.

Device/label memory (fast) 24 Kbytes Bit devices, T, ST, C, LC, D, Z, LZ, labels, and latch labels can be placed in this memory in

variable lengths.

For saving device/label memory 25 Kbytes This memory is for saving latch devices and devices in fast area that require a latch in the

event of a power interruption.

3 CPU MODULE MEMORY CONFIGURATION

3.1 Memory Configuration

SD memory card

The following files are stored in SD memory card.

Category File type Max. number of files Storage area size Remarks

Program Program file 32 1 Mbytes 

FB files 16 (Up to 15 for user) 

Restored information Restored information files 48 1 Mbytes 

Parameters Parameter files common to system 1 1 Mbytes 

CPU parameter file 1 

Module parameter file 1 

Memory card parameter 1 

Remote password 1 

Global label setting file 1 

Module extension parameter (for protocol setting) 2 

Initial device value file 1 

Comments Device comment file 1 2 Mbytes 

3 CPU MODULE MEMORY CONFIGURATION

3.1 Memory Configuration

3.2 Files

The CPU module files are explained below.

File type and storage destination memory

File types and their storage destination memory are explained below. : Can be stored, : Cannot be stored

File type CPU built-in memory SD memory card File name (extension)

Data memory

Drive No.4 Drive No.2

Program Arbitrary.PRG

FB files Arbitrary.PFB

CPU parameters CPU.PRM

System parameters SYSTEM.PRM

Module parameters UNIT.PRM

Memory card parameter MEMCARD.PRM

Device comments Arbitrary.DCM

Device initial values Arbitrary.DID

Global label settings GLBLINF.IFG

Module extension parameter (for protocol setting) UEX3FF01.PPR

UEX3FF00.PPR

Restored information CallTreeInfo.CAB

SourceInfo.CAB

*1 For serial communications file. *2 For Ethernet file.

Executable file operations

File operations that can be executed on each file are explained below. This operation is possible only when the operation

status of the CPU module is the STOP status. : Can be executed, : No corresponding operation

File type Operation with engineering tool

Write Read Delete

Program 

FB files 

Parameters 

Device comments 

Device initial values 

Global label setting file 

Restored information 

3 CPU MODULE MEMORY CONFIGURATION

3.2 Files

MEMO

3 CPU MODULE MEMORY CONFIGURATION

3.2 Files

PART 2 FUNCTIONS

This part consists of the following chapters.

4 FUNCTION LIST

5 SCAN MONITORING FUNCTION

6 CLOCK FUNCTION

7 ONLINE CHANGE

8 INTERRUPT FUNCTION

PART 2

9 PID CONTROL FUNCTION

10 CONSTANT SCAN

11 REMOTE OPERATION

12 DEVICE/LABEL MEMORY AREA SETTING

13 INITIAL DEVICE VALUE SETTING

14 LATCH FUNCTION

15 MEMORY CARD FUNCTION

16 DEVICE/LABEL ACCESS SERVICE PROCESSING SETTING

17 RAS FUNCTIONS

18 SECURITY FUNCTIONS

19 BUILT-IN I/O FUNCTION

20 BUILT-IN ANALOG FUNCTION

4 FUNCTION LIST

The following table lists the functions of the CPU module.

Function Description Reference

Scan monitoring function (Watchdog timer setting)

Clock function This function is used for the time management in the function which

Online change Changing ladder blocks

while online

Interrupt function Multiple interrupt function When an interrupt occurs while an interrupt program triggered by

PID control function Performs PID control by the PID control instruction. Page 55

Constant scan Keeps the scan time constant and executes program repeatedly. Page 84

Remote operation Remote RUN/STOP Changes the CPU module status to the RUN/STOP/PAUSE status

Remote PAUSE

Remote RESET Resets the CPU module externally while the CPU module is in the

Device/label memory area setting Sets the capacity of each area in the device/label memory. Page 92

Initial device value setting Sets the initial values of devices used in the program directly (not via

Latch function Holds the contents of the device and label of the CPU module when

Memory card function SD memory card forced

stop

Boot operation Transfers the file stored in the SD memory card to the transfer

Device/label access service processing setting Sets the number of execution times of the device/label access

RAS function Self-diagnostics function Self-diagnoses the CPU module to see whether an error exist or not. Page 109

Error clear Batch-clears all the continuation errors being detected.

Security function Protects resources stored in PCs and resources in the units in the

Built-in input/ output function

Built-in analog function

Built-in Ethernet function A function related to the Ethernet such as the connection with the

Serial communication function A function related to the serial communication such as N:N Network,

High-speed counter function Performs high-speed counter, pulse width measurement, input

Pulse width measurement function

Input interrupt function

Timer interrupt function

High-speed counter interrupt function

Built-in positioning function Executes positioning operation of up to 4 axes by using the

PWM output function Executes a PWM output by using the transistor output of the CPU

Analog input function Two analog inputs and one analog output are built in the FX5U CPU

Analog output function

Detects an error in the hardware and program of the CPU module by monitoring the scan time.

the system operates such as the date of the error history.

Writes the part of a program edited on the ladder editor using the engineering tool to the CPU module in units of ladder blocks. Edited contents spanning multiple portions can be written to the CPU module at once.

another cause is running, stops the program if its priority is lower than that of the new interrupt, and runs the higher-priority program whenever its execution condition is satisfied.

externally while the RUN/STOP/RESET switch of the CPU module is in RUN status.

STOP status.

the program) to the devices.

the power is turned ON etc.

Makes the SD memory card unavailable without turning OFF the power even when the function accessing the SD memory card is executed.

destination memory judged automatically by the CPU module when the power is turned ON or is reset.

service processing executed by END processing, with parameter.

system of the FX5 from illegal access by a third party such as theft, alteration, accidental operation and unauthorized execution.

interruption, timer interruption, high-speed counter interruption, etc. by using the input of the CPU module.

transistor output of the CPU module.

module.

module so that voltage input/voltage output can be performed.

MELSOFT products and GOTs, and socket communication.

MC protocol, inverter communication function and non-protocol communication.

Page 44

Page 46

Page 50

Page 53

Page 86

Page 97

Page 99

Page 103

Page 107

Page 113 GX Works3 Operating Manual

Page 114

MELSEC iQ-F FX5 User's Manual (Positioning Control)

Page 193

Page 201 MELSEC iQ-F FX5 User's Manual (Analog Control)

MELSEC iQ-F FX5 User's Manual (Ethernet Communication)

MELSEC iQ-F FX5 User's Manual (Serial Communication)

4 FUNCTION LIST

Function Description Reference

MODBUS RTU communication function Connection with the products which support MODBUS RTU is

available. The master and slave functions can be used.

MELSEC iQ-F FX5 User's Manual (MODBUS Communication)

4 FUNCTION LIST

5 SCAN MONITORING FUNCTION

Window

Displayed items

FOR K1000

WDT

Program repeatedly executed

Resetting of the watchdog timer

Repeated 1,000 times

This function detects CPU module hardware or program errors by monitoring the scan time. Using the watchdog timer, which

is an internal timer in the CPU module, the following scans are monitored.

• Initial scan (1st scan)

• 2nd scan and after

5.1 Scan time monitoring time setting

Sets the scan time monitoring time.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "RAS Setting"  "Scan Time Monitoring Time

(WDT) Setting"

Item Description Setting range Default

Initial Scan Sets the scan-time monitoring time (WDT) for the initial scan (first

scan).

After 2nd Scan Sets the scan-time monitoring time (WDT) for the second and later

scans.

10 to 2000 ms (10 ms units) 2000 ms

10 to 2000 ms (10 ms units) 200 ms

5.2 Resetting of the watchdog timer

Resets the watchdog timer when the END/FEND instruction is executed. When the CPU module operates normally and

executes the END/FEND instruction within the watchdog timer setting, the time of the watchdog timer will not time up. If the

END/FEND instruction cannot be executed within the watchdog timer setting due to increased program execution as a result

of hardware error or interrupt in the CPU module, the time of the watchdog timer will time up.

5.3 Precautions

The following precautions relate to the scan monitoring function.

Watchdog timer reset when executing a program repeatedly

The watchdog timer can be reset by executing the WDT instruction in a program. If the time of the watchdog timer is up while

executing a program repeatedly by the FOR instruction and NEXT instruction, use the WDT instruction to reset the watchdog

timer.

5 SCAN MONITORING FUNCTION

5.1 Scan time monitoring time setting

Scan time when the WDT instruction is used

Internal processing time

Program

Internal processing time

Scan execution program A

Scan execution program B

WDT reset (CPU module internal processing)

END

0 ENDWDT

Scan execution program A

Scan time

Clear

WDT measurement time

WDT

measurement

time

Next scan time

Next WDT measurement time

WDT reset (CPU module internal processing)

Even though the watchdog timer is reset using the WDT instruction, the scan time value is not reset. The scan timer value is

the value measured up to the END instruction.

5 SCAN MONITORING FUNCTION

5.3 Precautions

6 CLOCK FUNCTION

The CPU module has an internal clock and is used to manage time in functions performed by the system such as dates of the

error history.

6.1 Time Setting

Time operation continues with the large internal capacitor in the CPU module even though the power in the CPU module is

turned OFF or the power failure exceeds the allowable momentary power failure time.

If an optional battery is used, operation continues by the battery.

Clock data

The clock data handled in the CPU unit is described below.

Data name Description

Year 4 digits in calendar year (1980 to 2079)

Month 1 to 12

Day 1 to 31 (Leap year auto detect)

Hour 0 to 23 (24-hour system)

Minute 0 to 59

Second 0 to 59

Day-of-the-week 0: Sunday, 1: Monday, 2: Tuesday, 3: Wednesday, 4: Thursday, 5: Friday, 6: Saturday

Changing the clock data

The clock data can be changed using the following methods.

• Using engineering tools

• Using SM/SD

• Using instructions

Using the engineering tool

Clock data can be changed using Set Clock from the menu. (GX Works3 Operating Manual)

Using SM/SD

The values stored in SD210 (clock data) to SD216 (clock data) are written to the CPU module after END processing execution

of scan when SM210 (clock data set request) is changed from OFFON. If the data from SD210 to SD216 is out of the valid

range, SM211 (clock data set error) is turned ON, the values from SD210 to SD216 are not written in the CPU module.

Writes the SD210 to SD216 clock data to the CPU module.

If the SD210 to SD216 clock data is out of the range

SM210

SM211

ENDEND

OFF

Using instructions

Writes the clock data to the CPU module, using the TWR(P) instruction. (MELSEC iQ-F FX5 Programming Manual

(Instructions, Standard Functions/Function Blocks))

6 CLOCK FUNCTION

6.1 Time Setting

Reading clock data

There are the following methods to read clock data.

• Using SM/SD

• Using instructions

Using SM/SD

Clock data is read to SD210 to SD216 when SM213 (clock data read request) is turned ON.

Using instructions

Clock data is read from the CPU module using the TRD(P) instruction. (MELSEC iQ-F FX5 Programming Manual

(Instructions, Standard Functions/Function Blocks))

Precautions

The following describes precautions when setting the time.

When setting the clock for the first time

The clock is not set when the product is shipped.

Correcting the clock data

Before correcting any part of the clock data, you must write all data into the CPU module again.

6 CLOCK FUNCTION

6.1 Time Setting

6.2 Setting Time Zone

Window

Displayed items

The time zone used for the CPU module can be specified. Specifying the time zone enables the clock of the CPU module to

work in the local time zone.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Operation Related Setting"  "Clock Related

Setting"

Item Description Setting range Default

Time Zone Sets the time zone used by the CPU module. • UTC+13

•UTC+12

•UTC+11

•UTC+10

•UTC+9:30

•UTC+9

•UTC+8

•UTC+7

•UTC+6:30

•UTC+6

•UTC+5:45

•UTC+5:30

•UTC+5

•UTC+4:30

•UTC+4

•UTC+3:30

•UTC+3

•UTC+2

•UTC+1

•UTC

•UTC-1

•UTC-2

•UTC-3

•UTC-3:30

•UTC-4

•UTC-4:30

•UTC-5

•UTC-6

•UTC-7

•UTC-8

•UTC-9

•UTC-10

•UTC-11

•UTC-12

Comment Enters a comment for the time zone (e.g., name of the city). 1 to 32 letters 

UTC+9

6 CLOCK FUNCTION

6.2 Setting Time Zone

To reflect the time zone setting on the CPU module, the module must be restarted. If no parameter is set for

the CPU module (factory setting), it operates with "UTC+9".

6.3 System clock

There are two types of system clocks, one is to execute ON/OFF by the system and the other is to execute ON/OFF in the

intervals specified by the user.

Special relay used for system clock

Special relays used for system clock are as follows.

Special relay Name

SM400, SM8000 Always ON

SM401, SM8001 Always OFF

SM402, SM8002 After RUN, ON for one scan only

SM403, SM8003 After RUN, OFF for one scan only

SM409, SM8011 0.01 second clock

SM410, SM8012 0.1 second clock

SM411 0.2 second clock

SM412, SM8013 1 second clock

SM413 2 second clock

SM414 2n second clock

SM415 2n ms clock

SM8014 1 min clock

SM420, SM8330 Timing clock output 1

SM421, SM8331 Timing clock output 2

SM422, SM8332 Timing clock output 3

SM423, SM8333 Timing clock output 4

SM424, SM8334 Timing clock output 5

Special register used for system clock

Special registers used for system clock are as follows.

Special register Name

SD412 One second counter

SD414 2n second clock setting

SD415 2n ms clock setting

SD420 Scan counter

SD8330 Counted number of scans for timing clock output 1

SD8331 Counted number of scans for timing clock output 2

SD8332 Counted number of scans for timing clock output 3

SD8333 Counted number of scans for timing clock output 4

SD8334 Counted number of scans for timing clock output 5

SM420 to SM424, SM8330 to SM8334, and SD8330 to SD8334 are used by the DUTY instruction.

For the DUTY instruction, refer to the following. MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks)

6 CLOCK FUNCTION

6.3 System clock

7 ONLINE CHANGE

This chapter describes online change.

7.1 Online Ladder Block Change

Writes the portion edited on the ladder edit window of the engineering tool to the CPU module in increments of ladders. Edited

contents spanning multiple files or multiple portions can be written to the CPU module at once.

For details on the operating procedure of online ladder block change on engineering tools, refer to the

following.  GX Works3 Operating Manual

Editable contents

Within a program block, instructions and pointers (P, I) can be added, changed, or deleted. Also, as POU unit, program blocks

can be added, changed, or deleted. However, when the program/FB file is not in agreement between engineering tool and a

CPU module, it cannot be added, changed, or deleted.

Range changeable in a single session

The following shows the number of steps and number of ladder blocks which can be changed in a single session.

• Number of ladder blocks in a file: 64 blocks or less (2048 steps or less)

• The total of the changed circuit block count in all files: 256 blocks or less

• The total capacity of the program file and the FB file after a change: 1 M byte or less

Online ladder block change during the boot operation

If online change of ladder block is executed from the SD memory card during boot operation, the corresponding file in the SD

memory card, which is the boot source, can be changed as well.

Precautions

This section describes the precautions on using online ladder block change.

Prohibited operation at online ladder block change

When an online change of ladder block, if the power is turned OFF or a reset is made, the process does not end normally.

Such operation is made, execute rewriting to the PLC.

When deleting OUT instruction which is on

When deleting an OUT instruction (coil) which is not necessary for control, be sure to check that the OUT instruction is off

before deleting it. If the OUT instruction is deleted without turning it off in advance, the output will be retained.

Program file not registered in program setting

A program file which is not registered in parameter setting cannot be written.

Initializing the last execution if the ladder at online ladder block change has an FB call

• If a subroutine type FB is called in a FB definition, the execution information of the previous time in the FB definition of the

subroutine type FB is not initialized.

• If a macro type FB is called in the FB definition of a subroutine type, the execution information of the previous time in the

part equivalent to the macro type FB is not initialized either.

7 ONLINE CHANGE

7.1 Online Ladder Block Change

Instructions not compatible with online ladder block change

Online change completion

END

1 scan

END END00 0

OFF→OFF

OFF

ON→ON

Status of X0

(1)

[ PLS M0 ]

OFF→ON

Do not execute online change to ladder block including the following instruction.

DSZR instruction, DVIT instruction, TBL instruction, DRVTBL instruction, PLSV instruction, DRVI instruction, DRVA

instruction, DRVMUL instruction, PLSY instruction, PWM instruction, SPD instruction, HIOEN instruction, UDCNTF LC

instruction, ABS instruction, ADPRW instruction, IVCK instruction, IVDR instruction, IVRD instruction, IVWR instruction,

IVBWR instruction, IVMC instruction, S.CPRTCL instruction, SP.CPRTCL instruction, RS2 instruction, SP.SOCOPEN

instruction, SP.SOCCLOSE instruction, SP.SOCSND instruction, SP.SOCRCV instruction, SP.ECPRTCL instruction, RBFM

instruction, WBFM instruction

The cautions at the time of repeatedly performing online change

When online change is performed repeatedly, RUN writing may not be able to be carried out due to insufficient memory in the

CPU module. Please set the CPU module to STOP and write the program.

The operation when a pulse type instruction is included in the range of an online ladder block change

The operation when a pulse related instruction is included in the range of an online ladder block change is as follows.

Pulse type instruction Description

Rising instruction (PLS and P instructions)

Falling instruction (PLF and F instructions)

When a rising instruction exists within the range to be changed, the rising instruction will not be executed if the execution condition (OFF to ON) is fulfilled at completion of online program change.

When a falling instruction exists within the range to be changed, the falling instruction will not be executed even if the execution condition (ON to OFF) is fulfilled at completion of online program change.

■Rising instruction

When a rising instruction exists within the range to be changed, the rising instruction will not be executed if the execution

condition (OFF to ON) is fulfilled at completion of online program change.

(1) The rising instruction will not be executed even if the execution condition is OFF to ON.

7 ONLINE CHANGE

7.1 Online Ladder Block Change

■Falling instruction

Online change completion

END

1 scan

END END00 0

OFF→OFF

OFF

ON→

OFF

Status of X0

(1)

[ PLF M0 ]

(2)

When a falling instruction exists within the range to be changed, the falling instruction will not be executed even if the

execution condition (ON to OFF) is fulfilled at completion of online program change.

(1) The falling instruction will not be executed even if the execution condition is OFF to OFF. (2) If online program change and transition of ON to OFF occur simultaneously, the falling instruction will not be executed.

7 ONLINE CHANGE

7.1 Online Ladder Block Change

8 INTERRUPT FUNCTION

• When the multiple interruption function is enabled

I10 interrupt program

I0 interrupt program

Main routine program

Time

(1)

• When not set (at default)

During interruption execution During interruption stop

I10 interrupt program

I0 interrupt program

Main routine program

Time

(2)

[Priority]

• I10: High

• I0: Low

Interruption occurred Program stops Program restarts

This chapter describes the interrupt function.

8.1 Multiple Interrupt Function

When an interrupt occurs while an interrupt program triggered by another cause is running, stops the program if its priority is

lower than that of the new interrupt, and runs the higher-priority program whenever its execution condition is satisfied.

(1) A high-priority interrupt is executed by interrupting a low-priority interrupt.

(2) Even if a high-priority interrupt occurs, it enters the waiting status until the executing interrupt is completed.

Interrupt priority

If the interrupt priority of a program for which its execution condition has been satisfied is higher than that of the running

program, the programs are executed in accordance with their interrupt priority. If the interrupt priority of the new program is the

same or lower, it enters the waiting status until the running program finishes.

8 INTERRUPT FUNCTION

8.1 Multiple Interrupt Function

Interrupt priority setting

Operating procedure

Displayed items

The interrupt priority (1 to 3) of interruptions from modules can be changed.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Interrupt Settings"  "Interrupt Priority Setting

from Module"

"Interrupt Settings" window

"Detailed Setting" window

Item Description Setting range Default

Multiple Interrupt Sets whether or not to enable multiple interrupt. • Disable

Interrupt Priority Detailed Setting Sets the priority of the interrupt pointers I0 to I31. 1 to 3

*1 The lower the numerical value, the higher the interrupt priority.

1. Set Multiple Interrupt to "Enable" on the "Interrupt

Settings" window, and click "Detailed Setting".

2. Change the priority of each interrupt pointer.

Disable

• Enable

Disabling/enabling interrupts with a specified or lower priority

Interrupts with a priority equal or lower than that specified by the DI or EI instruction can be disabled or enabled even when

multiple interrupts are present. For details, refer to MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks).

Disabled interrupt priorities and the current interrupt priority can be checked in SD758 (Interrupt disabling for

each priority setting value) and SD757 (Current interrupt priority) respectively.

8 INTERRUPT FUNCTION

8.1 Multiple Interrupt Function

9 PID CONTROL FUNCTION

CPU module

Target value (SV)

Measured value (PV)

Controlled object

Output value (MV)

PID instruction

ΔMV=KP{(EVn-EVn-1)+

EVn=PVnf-SV

Dn=

MVn=ΣΔMV

TS+KD•TD

KD•TD

TS+KD•TD

EVn+Dn}

(-2PVnf-1+PVnf+PVnf-2)+ •Dn-1

ΔMV=KP{(EVn-EVn-1)+

EVn=SV-PVnf

Dn=

MVn=ΣΔMV

TS+KD•TD

KD•TD

TS+KD•TD

EVn+Dn}

(2PVnf-1-PVnf-PVnf-2)+

•Dn-1

9.1 Outline of Function

PID control is performed by PID control instruction. The PID instruction requires the system to calculate the output (MV) value

from the measured (PV) value. Through combining the P (proportional) action, I (integral) action, and D (derivative) action the

target (SV) value can be obtained.

• Alarm output function

The alarm function can be set for input variation (measured value) or output variation (value).

• Setting limit values

The upper limit and lower limit can be set for the output value.

• Auto-tuning function

The proportional gain (KP), integral time (TI) and differential time (TD) can be set automatically for both the limit cycle method

and step response method.

• Operation method of the PID instruction

Both PID speed type operation and measured value differential type operation are executed.

9.2 Basic Operation Expressions in PID Instruction

The PID instruction executes using the speed type or measured value differential type operation expression. According to the

contents of (s3)+1, bit 0 (operation setting (ACT)) specified by (s3) in the PID control, either forward operation or backward

operation is executed. Each value required in the operation is specified by a corresponding parameter (s3) or later.

Basic operation expression for PID control

Operation setting (ACT) (s3+1: b0)

Forward operation (OFF)

Backward operation (ON)

Operation expression The meaning of the signs

EVn: Deviation in sampling at this time EVn-1: Deviation in previous cycle SV: Target value PVnf: Measured value in sampling at this time (after filter) PVnf-1: Measured value in previous cycle (after filter) PVnf-2: Measured value in two cycles before (after filter) MV: Output variation MVn: Operation quantity at this time Dn: Differential term at this time Dn-1: Differential term in previous cycle TS: Sampling cycle KP: Proportional gain TI: Integral constant TD: Differential constant KD: Differential gain

9 PID CONTROL FUNCTION

9.1 Outline of Function

Expression for calculating the measured value (after the filter) in sampling at this time

Setting data

Processing details

(s1) (s2) (s3) (d)

EN ENO

ds1

Command input

Target value (SV)

Measured value (PV)

Parameters

Output value (MV)

PID (s1) (s2) (s3) (d)

(PVnf)

The value "PVnf" is obtained from the following expression based on the read measured value.

Measured value after filter: PVnf = PVn+L (PVnf-1-PVn)

PVn: Measured value in sampling at this time

L: Filter coefficient

PVnf-1: Measured value in previous cycle (after filter)

9.3 How to Use PID Instruction

This instruction executes PID control which changes the output value according to the input variation.

For details on the PID instruction, refer to the following manual. MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks)

Ladder diagram Structured text

ENO:=PID(EN,s1,s2,s3,d);

FBD/LD

■Descriptions, ranges, and data types

Operand Description Range Data type Data type (label)

(s1) Device number storing the target value (SV) -32768 to +32767 16-bit signed binary ANY16

(s2) Device number storing the measured value (PV) -32768 to +32767 16-bit signed binary ANY16

(s3) Device number storing PID parameters 1 to 32767 16-bit signed binary ANY16

(d) Device number storing the output value (MV) -32768 to +32767 16-bit signed binary ANY16

■Applicable devices

Operand Bit Word Double word Indirect

X, Y, M, L, SM, F, B, SB, S

(s1) *1 

(s2) 

(s3) 

(d) 

*1 Only D, SD, R can be used.

U\G T, ST,

C, LC

T, ST, C, D, W, SD, SW, R

U\G Z LC LZ K, H E $

 

 

 

specification

• Once the target value (s1), measured value (s2) and PID parameters (s3) to (s3)+6 are set and the program is executed,

the operation result (MV) is transferred to the output value (d) at every sampling time. The sampling time is specified by

(s3)

Constant Others

9 PID CONTROL FUNCTION

9.3 How to Use PID Instruction

■Set item

Set item Description Occupie

d points

(s1) Target value

(SV)

(s2) Measured value

(PV)

(s3) Parameter PID control

(d) Output value

(MV)

The target value (SV) is set. The PID instruction does not change the settings. [Caution on using the auto-tuning (limit cycle method)] If the target value for auto-tuning is different from the target value in the PID control, it is necessary to set a value to which a bias value is added, and then store the actual target value when the auto-tuning flag turns OFF.

This is the input value of the PID operation. It is necessary to read a normal measurement data before the execution of the PID operation for the measurement value of PID (PV). If an input value from an analog input is used for the PID operation, use caution to its conversion time.

25 devices are occupied from the head device specified in (s3)

Auto-tuning: In the limit cycle (1) 29 devices are occupied from the head device specified in (s3)

Auto-tuning: In the step response method (2) 25 devices are occupied from the head device specified in (s3)

PID control (normal processing) The user sets the initial output value before driving the instruction. After that, the operation result is stored.

Auto-tuning: In the limit cycle The Upper Limit Value (ULV) or Lower Limit Value (LLV) value is automatically output during auto-tuning. The specified MV value is output when auto-tuning is finished.

Auto-tuning: In the step response method The user sets the step output value before driving the instruction. The MV value is not changed by PID instruction during auto-tuning.

1 point

25 points

29 points

25 points

1 point

■Precautions for using the PID instruction

For the precautions for using the PID instruction, refer to the following manual. MELSEC iQ-F FX5 Programming Manual (Instructions, Standard Functions/Function Blocks)

9.4 Relationship Between Parameter Setting and

Auto-Tuning

When auto-tuning is not executed (parameter setting)

It is necessary to write the set value of the parameters (s3) to (s3)+6 using MOV instruction in advance, etc. before starting

the PID operation when auto-tuning is not executed. If a device with a latch setting is specified, the setting data is retained

even after the power to the CPU module is turned OFF; therefore, the writing at the 2nd power ON is not required. For details on parameters, refer to Page 58 Parameter.

When auto-tuning is executed

The proportional gain ((s3)+3), integral time ((s3)+4) and differential time ((s3)+6) are important constants for executing the

auto-tuning function described later and for optimizing the PID control. These constants can be set automatically. For a detailed description of auto-tuning, refer to Page 68 Auto-Tuning.

9 PID CONTROL FUNCTION

9.4 Relationship Between Parameter Setting and Auto-Tuning

9.5 Parameter

Set item Description/Setting range Remarks

(s3) Sampling time (TS) 1 to 32767 (ms) It cannot be shorter than operation cycle of the PLC.

(s3)+1 Operation setting

(ACT)

(s3)+2 Input filter constant () 0 to 99 [%] When "0" is set, input filter is not provided.

(s3)+3 Proportional gain (KP) 1 to 32767 [%] 

(s3)+4 Integral time (TI) 0 to 32767 [100 ms] When "0" is set, it is handled as "" (no integration).

(s3)+5 Differential gain (KD) 0 to 100 [%] When "0" is set, differential gain is not provided.

(s3)+6 Differential time (TD) 0 to 32767 [10 ms] When "0" is set, differential is not executed.

(s3)+7 to (s3)+19

(s3)+20

(s3)+21

(s3)+22

(s3)+23

(s3)+24

(s3)+25 PV value threshold

(s3)+26 Output value upper limit (ULV) Set maximum value (ULV) of output value (MV).

(s3)+27 Output value lower limit (LLV) Set minimum value (LLV) of output value (MV).

(s3)+28 Wait setting from end of tuning

These devices are occupied for internal processing of PID operation. Do not change data.

Input variation (incremental) alarm set value

Input variation (decremental) alarm set value

Output variation (incremental) alarm set value

Output upper limit set value -32768 to +32767 It is valid when operation setting (ACT) (b2 of (s3)+1) is

Output variation (decremental) alarm set value

Output lower limit set value -32768 to +32767 It is valid when operation setting (ACT) (b2 of (s3)+1) is

Alarm output b0 0: Input variation (incremental) is not exceeded.

(hysteresis) width (SHPV)

cycle to start of PID control (KW)

*1 (s3)+20 to +24 become used only if b1, b2, or b5 are set to "1" to determine the action (ACT) (s3) of +1.

b0 0: Forward operation

1: Backward operation

b1 0: Input variation alarm is invalid

1: Input variation alarm is valid

b2 0: Output variation alarm is invalid

1: Output variation alarm is valid

b3 Not used 

b4 0: Auto-tuning is not executed.

1: Auto-tuning is executed

b5 0: Upper and lower limits of output value are not

valid 1: Upper and lower limits of output value are valid

b6 0: Step response method

1: Limit cycle method

b7 to b15 Not used 

0 to 32767 It is valid when operation setting (ACT) (b1 of (s3)+1) is

0 to 32767 It is valid when operation setting (ACT) (b2 of (s3)+1) is

1: Input variation (incremental) is exceeded.

b1 0: Input variation (decremental) is not exceeded.

1: Input variation (decremental) is exceeded.

b2 0: Output variation (incremental) is not exceeded.

1: Output variation (incremental) is exceeded.

b3 0: Output variation (decremental) is not exceeded.

1: Output variation (decremental) is exceeded.

Set it according to measured value (PV) fluctuation.

-50 to +32717 [%]

Operation direction



Do not set b2 and b5 to ON at the same time.



Do not set b2 and b5 to ON at the same time.

Select auto-tuning mode.

"1".

"1" and (ACT) (b5 of (s3)+1) is "0".

"0" and (ACT) (b5 of (s3)+1) is "1".

"1" and (ACT) (b5 of (s3)+1) is "0".

"0" and (ACT) (b5 of (s3)+1) is "1".

It is valid when operation setting (ACT) (b1 or b2 of (s3)+1) is "1".

The setting below is required when the limit cycle method is used (when the operation setting (ACT) b6 is set to ON).

9 PID CONTROL FUNCTION

9.5 Parameter

9.6 Details of Parameters

Temperature

Measured value (PV)

Time

Target value (SV)

This chapter describes the details of parameters.

Sampling time (s3)

Set the cycle time (ms) for the PID operation. Setting range: 1 to 32767 (ms)

• In PID control and auto-tuning (Limit cycle method)

Set the sampling time longer than the operation cycle of the PLC.

• In auto-tuning (Step response method)

Set the sampling time to 1000 ms (= 1 second) or more.

Maximum error

The maximum error of the sampling time (TS) is from "- (one operation cycle+1 ms)" to "+ (one operation cycle)."

• When the sampling time (TS) is a small value

Fluctuation of the maximum error described above may cause a problem. In such a case, execute the PID instruction in the

constant scan mode, or program it in a timer interrupt routine.

• When the sampling time (TS) is shorter than one operation cycle of the PLC

A PID operation error occurs, however when PID operation is executed, the sampling time (TS) is equal to the operation cycle

of the PLC. In such a case, use the PID instruction in a timer interrupt, and clear (s3)+7 just before executing the PID

instruction.

Operation setting (S3)+1

Forward operation/backward operation

Set the PID control direction (forward or backward).

• During auto-tuning for the limit cycle method

It is necessary to set the PID control direction (forward or backward) for auto-tuning.

• During auto-tuning for the step response method

The PID control direction (forward or backward) is not required, as the direction is automatically set when auto-tuning is

complete.

Operation setting (S3)+1: b0 Operation

Forward operation (b0=OFF)

Backward operation (b0=ON)

As the measured value (PV) becomes larger than the target value (SV), the output (MV) increases. For example, cooling is a forward operation.

As the measured value (PV) becomes smaller than the target value (SV), the output (MV) increases. For example, heating is a backward operation.

Temperature

Target value (SV)

Measured value (PV)

Time

9 PID CONTROL FUNCTION

9.6 Details of Parameters

• Relationship between the forward/backward operation and the output (MV), measured value (PV) and target value (SV)

Measured value (PV)

Output value (MV)

Target value (SV)

Backward operation

Forward operation

The relationship is as follows.

Alarm setting (for input variation and output variation)

If b1 and b2 in (s3) +1 are turned ON, the input variation and the output variation can be checked. The check is executed by

following the values of (s3) +20 to (s3) +23.

These parameters can be set in (s3)+24. For details on operation of alarm output, refer to Page 67 Alarm output (s3)+24.

• Input variation

If the input variation alarm is used, turn ON b1 in (s3) +1, and specify the input variation alarm set value.

Set item Setting description/Setting range

Operation setting (s3)+1: b1 Input variation alarm ON: Used

OFF: Not used

Input variation alarm set value (s3)+20 Input variation (incremental) alarm set value 0 to 32767

(s3)+21 Input variation (decremental) alarm set value 0 to 32767

• Output variation

If the output variation alarm is used, turn ON b1 in (s3) +1, and specify the output variation alarm set value.

When this function is used, make sure to turn OFF b5 of (s3) +1.

Set item Setting description/Setting range

Operation setting (s3)+1: b2 Output variation alarm ON: Used

OFF: Not used

(s3)+1: b5 Output value upper/lower limit setting Make sure to set it to OFF

Output variation alarm set value (s3)+22 Output variation (incremental) alarm set value 0 to 32767

(s3)+23 Output variation (decremental) alarm set value 0 to 32767

Variation means (Previous value) - (Current value)

9 PID CONTROL FUNCTION

9.6 Details of Parameters

Upper and lower limits for output value

Output value upper limit

Output value lower limit

Time

(s3)+22

Output value (MV)

(s3)+23

These values are not output

When the upper limit and lower limit of output value are set

When the upper limit and lower limit of output value are not set

Measured value (PV) processed by input filter

Input amplitude

Pulse input by noiseActual measured value (PV)

Time

Input amplitude processed by input filter

When the upper and lower limit settings of the output value are valid, the output value is as shown in the chart. The upper limit

and lower limit of the output value can moderate the increase of the integral item in the PID control.

When using the upper limit and lower limit of the output value, make sure to set (s3)+1, b2 to OFF.

Set item Setting description/Setting range

Operation setting (s3)+1: b2 Output variation alarm Make sure to set it to OFF

(s3)+1: b5 Output value upper/lower limit setting ON: Used

OFF: Not used

Input filter constant (s3)+2

The input filter () is a software filter to reduce the fluctuation of the measured value (PV) caused by noise. By setting this time

constant of the filter according to the control target characteristics and noise level, the effect of noise can be reduced. If the

input filter value is too small, the filter effect is small. If the input filter value is too large, the input response is bad. Setting

range: 0 to 99 (%).

Because the input filter () acts on the target value (SV), all of the proportional operation, integral operation and differential

operation are affected.

9 PID CONTROL FUNCTION

9.6 Details of Parameters

Proportional gain (s3)+3

Ex.

Output value (MV)

Temperature

Remaining deviation

Proportional gain KP3>KP2>KP1

Proportional gain

Time

Target value (SV) Measured value (PV)

KP3>KP2>KP1

KP3 KP2 KP1

Output value (MV)

Temperature

Remaining deviation

Proportional gain KP3>KP2>KP1

Proportional gain

Time

Target value (SV)

Measured value (PV)

KP3>KP2>KP1

KP3 KP2 KP1

During the proportional operation, the output (MV) increases in proportion to the deviation (difference between the target

value (SV) and the measured value (PV)). This deviation is called proportional gain (Kp), and expressed in the following

relational expression:

Output (MV) = Proportional gain (KP)  Deviation (EV)

The reciprocal of the proportional gain (KP) is called proportional band. As the proportional gain (KP) is larger (as shown in

the example below), the motion to let the measured value (PV) be nearer to the target value (SV) becomes stronger.

Setting range: 1 to 32767 (%)

Proportional operation (P operation) in backward operation (heating)

Proportional operation (P operation) in forward operation (cooling)

9 PID CONTROL FUNCTION

9.6 Details of Parameters

Integral time (s3)+4

Ex.

Output value (MV)

Temperature

Integral time (TI) 0<TI3<TI2<TI1

Integral time (TI)

Time

Output in PI operation

Output in proportional operation

Measured value in PI operation Measured value in proportional operation

0<TI3<TI2<TI1

TI3

TI2

TI1

TI3

TI2

TI1

Target

value

(SV)

Output value (MV)

Temperature

Integral time (TI) 0<TI3<TI2<TI1

Integral time (TI)

Time

Output in PI operation

Output in proportional operation

Measured value in PI operation

Measured value in proportional operation

0<TI3<TI2<TI1

TI3

TI2

TI1

TI3

TI2

TI1

Target

value

(SV)

During the integral operation, the time after deviation is generated until the integral operation output becomes the proportional

operation output. This is called integral time and is expressed as "TI".

As TI becomes smaller, the integral operation becomes stronger.

Setting range: 0 to 32767 ( 100 ms). "0" is handled as "" (no integration).

PI operation in backward operation (heating)

PI operation in forward operation (cooling)

9 PID CONTROL FUNCTION

9.6 Details of Parameters

The integral operation changes the output so that the continuously generated deviation is eliminated. As a

Deviation

Output (MV)

Deviation (EV)

Time

Output of "proportional operation + integral operation"

Output of integral operation

Output of proportional operation

Proportional gain (KP) × Deviation (E)

Integral time (TI)

result, the remaining deviation generated in the proportional operation can be eliminated.

Differential gain (s3)+5

The filter is applied to the output at the differential operation. Setting range: 0 to 100 (%)

Only the differential operation is affected by the differential gain (KD).

• When the differential gain (KD) is small, the output is immediately given with regard to changes in the measured value (PV)

caused by disturbance, etc.

• When the differential gain (KD) is large, the output is given after a long time with respect to changes in the measured value

(PV) caused by disturbance, etc.

Set the differential gain (KD) to "0", and then adjust the operation using the input filter ().

If the output response is too close to the disturbance, increase the differential gain (KD).

9 PID CONTROL FUNCTION

9.6 Details of Parameters

Differential time (s3)+6

Ex.

Output value (MV)

Deviation

Disturbance

Deviation (EV)

Time

TD3>TD2>TD1

TD3 (PID operation)

TD1 (PID operation)

TD2 (PID operation)

TD3 (PID operation)

TD1 (PID operation)

TD2 (PID operation)

Output value (MV)

Temperature

Target value (SV)

Time

TD3>TD2>TD1

TD3 (PID operation)

PI operation (without differential operation)

TD2 (PID operation)

TD3 (PID operation)

Changes in output caused by disturbance

Changes caused by disturbance

TD1 (PID operation)

TD2 (PID operation)

Use the differential time (TD) to respond sensitively to fluctuations in the measured value (PV) caused by disturbance, etc.

and to minimize the fluctuations. Setting range: 0 to 32767 ( 10 ms)

• When the differential time (TD) is large, it prevent large fluctuation in the control target caused by disturbance, etc.

• It is not always necessary to use the differential time (when disturbance is small, for example).

PID operation in backward operation (heating)

9 PID CONTROL FUNCTION

9.6 Details of Parameters

Ex.

PID operation in forward operation (cooling)

Output value (MV)

Temperature

Target value (SV)

Time

TD3>TD2>TD1

TD3 (PID operation)

PI operation (without differential operation)

TD2 (PID operation)

TD3 (PID operation)

Changes in output caused by disturbance

Changes caused by disturbance

TD1 (PID operation)

TD2 (PID operation)

9 PID CONTROL FUNCTION

9.6 Details of Parameters

Alarm output (s3)+24

Measured value (PV)

Variation

Time

Sampling time (TS)

Alarm output

(s3)+24: b1

(s3)+24: b0

Output value (MV)

Variation

Time

Sampling time (TS)

Alarm output

(s3)+24: b3

(s3)+24: b2

If the input variation and the output variation specified with (s3) +20 to (s3) +23 are exceeded, each bit of (s3) +24 turns ON

as a warning output.

Item Description Remarks

Alarm output (s3)+24: b0 OFF: Input variation (incremental) is not exceeded.

ON: Input variation (incremental) is exceeded.

(s3)+24: b1 OFF: Input variation (incremental) is not exceeded.

ON: Input variation (incremental) is exceeded.

(s3)+24: b2 OFF: Output variation (incremental) is not exceeded.

ON: Output variation (incremental) is exceeded.

(s3)+24: b3 OFF: Output variation (incremental) is not exceeded.

ON: Output variation (incremental) is exceeded.

It is valid when operation setting (ACT) (b1 of (s3)+1) is "1".

It is valid when operation setting (ACT) (b2 of (s3)+1) is "1".

In the case of input variation

In the case of output variation

9 PID CONTROL FUNCTION

9.6 Details of Parameters

9.7 Auto-Tuning



on

33×on



on

20×on

This chapter describes the auto-tuning function of PID instruction.

The auto-tuning function will automatically set the important constants, such as the proportional gain and the integral time, to

ensure optimum PID control. There are two auto-tuning methods: limit cycle method and step response method.

Limit Cycle Method

For acquiring satisfactory control results in PID control, it is necessary to obtain the optimal value of each constant

(parameter) suitable to the control target. This paragraph explains the limit cycle method to obtain the amplitude (a) and

vibration cycle (, on) of the input value, and then calculate the proportional gain (KP), integral time (TI) and differential time

(TD) based on the expressions shown in the table below.

What is the limit cycle method? Changes in the input value in two-position control (in which the output Upper Limit Value (ULV)

and output Lower Limit Value (LLV) are switched according to the deviation) are measured, and then three constants in the

PID control are obtained.

How to obtain three constants in PID control (Reference)

■Operation characteristics and three constants

Control type Proportional gain (KP) [%] Integral time (TI) [ 100 ms] Differential time (TD) [ 10 ms]

Only proportional control (P operation)

PI control (PI operation) 

(ULV-LLV)×100

0.9 (ULV-LLV)×100



PID control (PID operation)

1.2 (ULV-LLV)×100

50×on

on



9 PID CONTROL FUNCTION

9.7 Auto-Tuning

■Operation characteristics (in an example of backward operation)

Input value

Time (s)



Output value (MV)



SV (target value)

SV+SHPV

SV-SHPV



Time

SHPV: PV Input threshold (hysteresis)

Output lower

limit value (LLV)

Output upper

limit value (ULV)

During the "W" period after the tuning cycle is finished, the output value is held at the output Lower Limit Value (LLV), and

then normal PID control is started. The value "W" can be obtained by the expression "W = (50 + KW)/100  ( - on)", and

the wait setting parameter "KW" can be set in the parameter (s3)+28. (Setting range: Kw = -50 to +32717 [%]) (When the

abnormal range is specified, "W" is handled as "0")

9 PID CONTROL FUNCTION

9.7 Auto-Tuning

Parameters set in limit cycle method

The parameters specified in the limit cycle method are shown below.

Parameter Setting position

Proportional gain (KP) (s3)+3

Integral time (TI) (s3)+4

Differential time (TD) (s3)+6

Auto-tuning procedure

1. Set forward or backward operation

Set the operation direction flag (b0) in the operation setting parameter (ACT) (s3)+1.

2. Select the auto-tuning method (limit cycle method)

Set the auto-tuning method to ON (b6) in the operation setting parameter (ACT) (s3)+1. (When bit 6 is set to OFF, the step

response method is selected.)

3. Set the auto-tuning execution flag to ON

Set the auto-tuning execution flag to ON (b4) in the operation setting parameter (ACT) (s3)+1.

4. Set the input filter

Set the input filter in the operation setting parameter (ACT) (s3)+2.

5. Set the sampling time

Set the sampling time (s3).

6. Set the Upper Limit Value (ULV)

Set the Upper Limit Value (ULV) of the output value (MV) in the operation setting parameter (ACT) (s3)+26.

7. Set the Lower Limit Value (LLV)

Set the Lower Limit Value (LLV) of the output value (MV) in the operation setting parameter (ACT) (s3)+27.

8. Set the threshold (hysteresis) (SHPV)

Set the threshold (hysteresis) width (SHPV) in the operation setting parameter (ACT) (s3)+25.

9. Set the target value (SV)

Set the target value (SV) in PID instruction.

10. Set the PID instruction command input ON to start auto-tuning

Auto-tuning is executed according to the measured value (PV).

When auto-tuning is completed, the auto-tuning flag (b4 and b6) turns OFF in the operation setting parameter (ACT) (s3)+1.

9 PID CONTROL FUNCTION

9.7 Auto-Tuning

Step Response Method

Output value

(MV)

× ×100

0.9

Output value

(MV)

× ×100

1.2

Output value

(MV)

× ×100

0 %

100 %

Output value (MV)

Time

Dead time (L) [s]

Time (s)

1 (s)

Maximum ramp (R)

Input value variation

For acquiring satisfactory control results during PID control, it is necessary to obtain the optimal value of each constant

(parameter) suitable for the control target. This paragraph explains the step response method to obtain three constants in the

PID control (proportional gain (KP), integral time (TI) and differential time (TD)).

In this method, by giving stepped output from 0 to 100 % to the control system, three constants in the PID control are obtained

from the operation characteristics (maximum ramp (R) and dead time (L)) and the input value variation. The stepped output

may be obtained from 0 to 75% or from 0 to 50 %.

How to obtain three constants in PID control (Reference)

■Operation characteristics and three constants

Control type Proportional gain (KP) [%] Integral time (TI) [ 100 ms] Differential time (TD) [ 10 ms]

Only proportional control (P operation)

PI control (PI operation) 33L 

PID control (PID operation) 20L 50L

■Operation characteristics



Parameters set in step response method

The parameters specified in the step response method are shown below.

Parameter Setting position

Operation setting (ACT) (s3)+3: b0 (operation direction)

Proportional gain (KP) (s3)+3

Integral time (TI) (s3)+4

Differential time (TD) (s3)+6

9 PID CONTROL FUNCTION

9.7 Auto-Tuning

Auto-tuning procedure

1. Transferring the output value for auto-tuning to the output value (d)

Set the output value for auto-tuning to the maximum available output value multiplied by 0.5 to 1 for the output equipment.

2. Setting the parameter (s3), target value (SV), etc. that cannot be set in autotuning according to the system

3. Setting to ON b4 of (s3)+1 (operation setting ACT) to start auto-tuning

When the variation from the measured value at the start of auto-tuning to the target value reaches 1/3 or more, auto-tuning is

completed. And bit 4 of (s3)+1 (operation setting ACT) is automatically set to OFF.

Start auto-tuning while the system is stable.

If the system is unstable when auto-tuning is started, auto-tuning may not be executed normally.

Cautions on auto-tuning setting

Note that auto-tuning may not be executed normally if the cautions described below are not followed

• Difference between the target value (SV) and the measured value (PV)

If the difference between the target value (SV) and the measured value (PV) is less than 150 when autotuning is started, auto-

tuning is not executed normally. Accordingly, if the difference is less than 150, set the target value for auto-tuning. Set the

target value again when auto-tuning is completed.

• Sampling time (TS)

Make sure the sampling time is set for auto-tuning to 1 second (1000 ms) or more. It is recommended that the sampling time

is set to that it is considerably longer than the output change cycle.

Cautions on auto-tuning execution

■Program countermeasures when the input value (PV) does not change

When the input value (PV) does not change normally due to factors such as wire breakage in an analog input line, auto-tuning

is not finished. Detect and avoid such occurrences by introducing a sequence to monitor the input value or the elapsed time

from the start of auto-tuning.

9 PID CONTROL FUNCTION

9.7 Auto-Tuning

9.8 Examples of Program

V1+

V2-ADV-

COM0

Electric heater

Temperature chamber

Resistance temperature sensor (Pt100 sensor)

X10: Auto-tuning command X11: PID control command

Resistance temperature sensor converter M2RS-44-R/UL

10V

145

Error indication

24 V DC

power supply

FX5U-32MT/ES

24V X10 X11

Power supply

D502×1 ms <ON duration>

OFF

ON ON ON ON ON

2 sec (2000 ms)

<cycle>

2 sec (2000 ms) 2 sec (2000 ms)

1.8 sec (1800 ms) 1.8 sec (1800 ms) 1.8 sec (1800 ms)

2 sec (2000 ms) 2 sec (2000 ms) 2 sec (2000 ms)

System configuration example

An example of the system configuration when the PID control function is used is shown below.

System configuration

Operation of the electric heater

■During PID control

■During auto-tuning

Program examples

Program example Description Reference

Program example 1 This is an example of the sample program for PID control. Page 74

Program example 2 This is an example of the sample program for auto tuning (limit cycle method). Page 76

Program example 3 This is an example of the sample program for auto tuning (step response method). Page 78

Program example 4 This is an example of the sample program for auto tuning (limit cycle method) + PID

Program example 5 This is an example of the sample program for auto tuning (step response method) + PID

control.

Page 80

Page 82

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program example 1

This is an example of the sample program for PID control.

Use device

The content of the devices used for the program is as follows.

Item Device Setting value

During auto-tuning During PID control

Target value (SV)

Measured value (PV)

Parameter Sampling time (TS)

Output value (MV)

Operation setting (ACT)

Input filter constant () (s3)+2 D512 Not used 0 (Input filter is not provided)

Proportional gain (KP)

Integral time (TI)

Differential gain (KD) (s3)+5 D515 Not used 0 (Differential gain is not

Differential time (TD)

Input variation (incremental) alarm set value (s3)+20 D530 Not used Not used

Input variation (decremental) alarm set value (s3)+21 D531 Not used Not used

Output variation (incremental) alarm set value Output upper limit set value

Output variation (decremental) alarm set value Output lower limit set value

Alarm output Input variation (incremental) is

PV value threshold (hysteresis) width (SHPV) (s3)+25 D535 

Output value upper limit (ULV) (s3)+26 D536 

Output value lower limit (LLV) (s3)+27 D537 

Wait setting from end of tuning cycle to start of PID control (KW)

Operation direction

Input variation alarm (s3)+1 b1 D511.1 Not used 0 (Alarm is not provided)

Output variation alarm (s3)+1 b2 D511.2 Not used 0 (Alarm is not provided)

Auto-tuning (s3)+1 b4 D511.4 Not used 0 (AT is not provided)

Upper and lower limits of output value

Select auto-tuning mode (s3)+1 b6 D511.6 Not used Not used

exceeded

Input variation (decremental) is exceeded

Output variation (incremental) is exceeded

Output variation (decremental) is exceeded

(s1) D500 Not used 5000 (50.0)

(s2) SD6022 Not used According to input value

(s3) D510 Not used 500 (500 ms)

(s3)+1 b0 D511.0 Not used 1 (Backward operation)

(s3)+1 b5 D511.5 Not used 1 (Setting is provided)

(s3)+3 D513 Not used 3000 (3000 %)

(s3)+4 D514 Not used 2000 (2000100 ms)

(s3)+6 D516 Not used 5000 (500010 ms)

(s3)+22 D532 Not used 2000 (2 second)

(s3)+23 D533 Not used 0 (0 second)

(s3)+24 b0 D534.0 Not used Not used

(s3)+24 b1 D534.1 Not used Not used

(s3)+24 b2 D534.2 Not used Not used

(s3)+24 b3 D534.3 Not used Not used

(s3)+28 D538 

(d) D502 Not used According to operation

provided)

: This is an item not occupied.

*1 The setting is always necessary. *2 When CH1 is used.

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program

OUTHS ST0 K2000

MOV

SM402

Initial pulse

SM402

Initial pulse

SM402

Initial pulse

X011

PID control

is started

PID operation

is executed

ST0

Heater operation

cycle

PID operation

is executed

PID operation

is executed

ST0<D502

X011

PID control

is started

MOV

SD6022

K5000

K500

SET

K2000

K3000

K2000

K5000

RST

D510PID

< ST0 D502

D500

RST

D500

The target value is set to 50°C

The sampling time is set to 500 ms

The operation direction is set to backward operation

The upper and lower limits of output value is set to valid

The output value upper limit is set to ON for 2 sec.

PID instruction initial setting

Built-in analog monitor CH1: SD6022 CH2: SD6062

0: Enable 1: Disable

Heater output control

The output value lower limit is set to ON for 0 sec.

The proportional gain is set to 3000 %

The integral time is set to 2000×100ms

The differential time is set to 5000×100ms

The built-in analog is set to used CH. CH1: SM6021 CH2: SM6061

The PID output is initialized

PID instruction drive

PID operation is executed

The heater operation cycle is set to 2 sec

Preset

Heater output

D510

D511.0

D511.5

D532

D533

D513

D514

D516

SM6021

D502

ST0

END

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program example 2

This is an example of the sample program for auto tuning (limit cycle method).

Use device

The content of the devices used for the program is as follows.

Item Device Setting value

During auto-tuning During PID control

Target value (SV)

Measured value (PV)

Parameter Sampling time (TS)

Output value (MV)

Operation setting (ACT)

Input filter constant () (s3)+2 D512 0 (Input filter is not

Proportional gain (KP)

Integral time (TI)

Differential gain (KD) (s3)+5 D515 0 (Differential gain is not

Differential time (TD)

Input variation (incremental) alarm set value (s3)+20 D530 Not used Not used

Input variation (decremental) alarm set value (s3)+21 D531 Not used Not used

Output variation (incremental) alarm set value Output upper limit set value

Output variation (decremental) alarm set value Output lower limit set value

Alarm output Input variation (incremental) is

PV value threshold (hysteresis) width (SHPV) (s3)+25 D535 500 (5.0) Not used

Output value upper limit (ULV) (s3)+26 D536 2000 (2 second) Not used

Output value lower limit (LLV) (s3)+27 D537 0 (0 second) Not used

Wait setting from end of tuning cycle to start of PID control (KW)

Operation direction

Input variation alarm (s3)+1 b1 D511.1 0 (Alarm is not provided) Not used

Output variation alarm (s3)+1 b2 D511.2 0 (Alarm is not provided) Not used

Auto-tuning (s3)+1 b4 D511.4 1 (AT is provided) Not used

Upper and lower limits of output value

Select auto-tuning mode (s3)+1 b6 D511.6 1 (Limit cycle method) Not used

exceeded

Input variation (decremental) is exceeded

Output variation (incremental) is exceeded

Output variation (decremental) is exceeded

(s1) D500 5000 (50.0) Not used

(s2) SD6022 According to input value Not used

(s3) D510 500 (500 ms) Not used

(s3)+1 b0 D511.0 1 (Backward operation) Not used

(s3)+1 b5 D511.5 0 (Setting is not provided) Not used

provided)

(s3)+3 D513 According to auto-tuning

result

(s3)+4 D514 According to auto-tuning

result

provided)

(s3)+6 D516 According to auto-tuning

result

(s3)+22 D532 Not used Not used

(s3)+23 D533 Not used Not used

(s3)+24 b0 D534.0 Not used Not used

(s3)+24 b1 D534.1 Not used Not used

(s3)+24 b2 D534.2 Not used Not used

(s3)+24 b3 D534.3 Not used Not used

(s3)+28 D538 -50 (Wait is not provided) Not used

(d) D502 According to operation Not used

Not used

: This is an item not occupied.

*1 The setting is always necessary. *2 When CH1 is used.

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program

OUTHS ST0 K2000

MOV

X010

Auto-tuning is started

SM402

Initial pulse

D511.4

Auto-tuning is executed

X010

Auto-tuning is started

ST0

Heater operation

cycle

Auto-tuning is executed

ST0<D502

D511.4

MOV

SD6022

K5000

K500

SET

K500

K2000

K-50

SET

RST

D510PID

< ST0 D502

D500

RST

D500

The target value is set to 50°C

The sampling time is set to 500 ms

The operation direction is set to backward operation

The auto-tuning mode is set to limit cycle method

The PV value threshold (hysteresis) width (SHPV) is set to 5.0°C

PID instruction initial setting

Built-in analog monitor CH1: SD6022 CH2: SD6062

0: Enable 1: Disable

Heater output control

The output value upper limit (ULV) is set to ON for 2 sec.

The output value lower limit (LLV) is set to ON for 0 sec.

The wait setting parameter (kW) from the end of tuning cycle to PID control start is set to -50 (wait is not provided)

Auto-tuning is started

The built-in analog is set to used CH CH1: SM6021 CH2: SM6061

The PID output is initialized

PID instruction drive

Auto-tuning is executed

The heater operation cycle is set to 2 sec.

Preset

Heater output

D510

D511.0

D511.6

D535

D536

D537

D538

D511.4

SM6021

D502

ST0

END

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program example 3

This is an example of the sample program for auto tuning (step response method).

Use device

The content of the devices used for the program is as follows.

Item Device Setting value

During auto-tuning During PID control

Target value (SV)

Measured value (PV)

Parameter Sampling time (TS)

Output value (MV)

Operation setting (ACT)

Input filter constant () (s3)+2 D512 0 (Input filter is not

Proportional gain (KP)

Integral time (TI)

Differential gain (KD) (s3)+5 D515 0 (Differential gain is not

Differential time (TD)

Input variation (incremental) alarm set value (s3)+20 D530 Not used Not used

Input variation (decremental) alarm set value (s3)+21 D531 Not used Not used

Output variation (incremental) alarm set value Output upper limit set value

Output variation (decremental) alarm set value Output lower limit set value

Alarm output Input variation (incremental) is

PV value threshold (hysteresis) width (SHPV) (s3)+25 D535  Not used

Output value upper limit (ULV) (s3)+26 D536  Not used

Output value lower limit (LLV) (s3)+27 D537  Not used

Wait setting from end of tuning cycle to start of PID control (KW)

Operation direction

Input variation alarm (s3)+1 b1 D511.1 0 (Alarm is not provided) Not used

Output variation alarm (s3)+1 b2 D511.2 0 (Alarm is not provided) Not used

Auto-tuning (s3)+1 b4 D511.4 1 (AT is provided) Not used

Upper and lower limits of output value

Select auto-tuning mode (s3)+1 b6 D511.6 0 (Step response method) Not used

exceeded

Input variation (decremental) is exceeded

Output variation (incremental) is exceeded

Output variation (decremental) is exceeded

(s1) D500 5000 (50.0) Not used

(s2) SD6022 According to input value Not used

(s3) D510 500 (500 ms) Not used

(s3)+1 b0 D511.0 According to auto-tuning

result

(s3)+1 b5 D511.5 0 (Setting is not provided) Not used

provided)

(s3)+3 D513 According to auto-tuning

result

(s3)+4 D514 According to auto-tuning

result

provided)

(s3)+6 D516 According to auto-tuning

result

(s3)+22 D532 Not used Not used

(s3)+23 D533 Not used Not used

(s3)+24 b0 D534.0 Not used Not used

(s3)+24 b1 D534.1 Not used Not used

(s3)+24 b2 D534.2 Not used Not used

(s3)+24 b3 D534.3 Not used Not used

(s3)+28 D538  Not used

(d) D502 1800 (1.8 second) Not used

Not used

: This is an item not occupied.

*1 The setting is always necessary. *2 When CH1 is used.

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program

OUTHS ST0 K2000

MOV

X010

Auto-tuning is started

SM402

Initial pulse

D511.4

Auto-tuning is executed

X010

Auto-tuning is started

ST0

Heater operation

cycle

Auto-tuning is executed

ST0<D502

D511.4

MOV

SD6022

K5000

K500

K1800

RST

SET

RST

D510PID

< ST0 D502

D500

RST

D500

The target value is set to 50°C

The sampling time is set to 500 ms

The output of auto-tuning is set to 1.8 sec.

PID instruction initial setting

Built-in analog monitor CH1: SD6022 CH2: SD6062

0: Enable 1: Disable

Heater output control

The auto-tuning mode is set to step response method

Auto-tuning is started

The built-in analog is set to used CH CH1: SM6021 CH2: SM6061

The PID output is initialized

PID instruction drive

Auto-tuning is executed

The heater operation cycle is set to 2 sec.

Preset

Heater output

D510

D536

D511.6

D511.4

SM6021

D502

ST0

END

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program example 4

This is an example of the sample program for auto tuning (limit cycle method) + PID control.

Use device

The content of the devices used for the program is as follows.

Item Device Setting value

During auto-tuning During PID control

Target value (SV)

Measured value (PV)

Parameter Sampling time (TS)

Output value (MV)

Operation setting (ACT)

Input filter constant () (s3)+2 D512 0 (Input filter is not

Proportional gain (KP)

Integral time (TI)

Differential gain (KD) (s3)+5 D515 0 (Differential gain is not

Differential time (TD)

Input variation (incremental) alarm set value (s3)+20 D530 Not used Not used

Input variation (decremental) alarm set value (s3)+21 D531 Not used Not used

Output variation (incremental) alarm set value Output upper limit set value

Output variation (decremental) alarm set value Output lower limit set value

Alarm output Input variation (incremental) is

PV value threshold (hysteresis) width (SHPV) (s3)+25 D535 500 (5.0) Not used

Output value upper limit (ULV) (s3)+26 D536 2000 (2 second) Not used

Output value lower limit (LLV) (s3)+27 D537 0 (0 second) Not used

Wait setting from end of tuning cycle to start of PID control (KW)

Operation direction

Input variation alarm (s3)+1 b1 D511.1 0 (Alarm is not provided) 0 (Alarm is not provided)

Output variation alarm (s3)+1 b2 D511.2 0 (Alarm is not provided) 0 (Alarm is not provided)

Auto-tuning (s3)+1 b4 D511.4 1 (AT is provided) 1 (AT is provided)

Upper and lower limits of output value

Select auto-tuning mode (s3)+1 b6 D511.6 1 (Limit cycle method) Not used

exceeded

Input variation (decremental) is exceeded

Output variation (incremental) is exceeded

Output variation (decremental) is exceeded

(s1) D500 5000 (50.0) 5000 (50.0)

(s2) SD6022 According to input value According to input value

(s3) D510 500 (500 ms) 500 (500 ms)

(s3)+1 b0 D511.0 1 (Backward operation) 1 (Backward operation)

(s3)+1 b5 D511.5 0 (Setting is not provided) 1 (Setting is provided)

provided)

(s3)+3 D513 According to auto-tuning

result

(s3)+4 D514 According to auto-tuning

result

provided)

(s3)+6 D516 According to auto-tuning

result

(s3)+22 D532 Not used 2000 (2 second)

(s3)+23 D533 Not used 0 (0 second)

(s3)+24 b0 D534.0 Not used Not used

(s3)+24 b1 D534.1 Not used Not used

(s3)+24 b2 D534.2 Not used Not used

(s3)+24 b3 D534.3 Not used Not used

(s3)+28 D538 -50 (Wait is not provided) Not used

(d) D502 According to operation According to operation

0 (Input filter is not provided)

According to auto-tuning result

0 (Differential gain is not provided)

According to auto-tuning result

: This is an item not occupied.

*1 The setting is always necessary. *2 When CH1 is used.

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program

OUTHS ST0 K2000

MOV

SM402

Initial pulse

SM402

Initial pulse

SM402

PID contr ol is started

after auto-tuning

PID is executed

X010

PID contr ol is started

after auto-tuning

X011

PID contr ol is started

(without auto-tuning)

ST0

Heater operation

cycle

PID contr ol is started

(without auto-tuning)

X011

Auto-tuning is executed

ST0<D502

X010

MOV

SD6022

K5000

K500

SET

K0MOV

RST

D510PID

< ST0 D502

D500

RST

D500

The target value is set to 50C

The sampling time is set to 500 ms

The operation direction is set to backward operation

PID instruction initial setting

Built-in analog monitor CH1: SD6022 CH2: SD6062

0: Enable 1: Disable

Heater output control

The upper and lower limits of output value is set to valid

The output value lower limit is set to ON for 0 sec.

The built-in analog is set to used CH CH1: SM6021 CH2: SM6061

The PID output is initialized

PID instruction drive

PID is executed

The heater operation cycle is set to 2 sec.

Preset

Heater output

D510

D511.0

D511.5

K2000MOV

The output value upper limit is set to ON for 2 sec.

D532

D533

SM6021

D502

ST0

END

X010

PID contr ol is started

after auto-tuning

MOV

SET

K500

K1800

K0MOV

SET

D511.6

The auto-tuning mode is set to limit cycle method

The PV value threshold (hysteresis) width (SHPV) is set to 5.0°C

The output value upper limit (ULV) is set to ON for 1.8 sec.

Auto-tuning initial setting

The output value lower limit (LLV) is set to ON for 0 sec.

Auto-tuning is started

D535

D536

D537

K-50MOV

The wait setting parameter (kW) from the end of tuning cycle to PID control start is set to -50 (wait is not provided)

D538

D511.4

MOV

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program example 5

This is an example of the sample program for auto tuning (step response method) + PID control.

Use device

The content of the devices used for the program is as follows.

Item Device Setting value

During auto-tuning During PID control

Target value (SV)

Measured value (PV)

Parameter Sampling time (TS)

Output value (MV)

Operation setting (ACT)

Input filter constant () (s3)+2 D512 0 (Input filter is not

Proportional gain (KP)

Integral time (TI)

Differential gain (KD) (s3)+5 D515 0 (Differential gain is not

Differential time (TD)

Input variation (incremental) alarm set value (s3)+20 D530 Not used Not used

Input variation (decremental) alarm set value (s3)+21 D531 Not used Not used

Output variation (incremental) alarm set value Output upper limit set value

Output variation (decremental) alarm set value Output lower limit set value

Alarm output Input variation (incremental) is

PV value threshold (hysteresis) width (SHPV) (s3)+25 D535  Not used

Output value upper limit (ULV) (s3)+26 D536  Not used

Output value lower limit (LLV) (s3)+27 D537  Not used

Wait setting from end of tuning cycle to start of PID control (KW)

Operation direction

Input variation alarm (s3)+1 b1 D511.1 0 (Alarm is not provided) 0 (Alarm is not provided)

Output variation alarm (s3)+1 b2 D511.2 0 (Alarm is not provided) 0 (Alarm is not provided)

Auto-tuning (s3)+1 b4 D511.4 1 (AT is provided) 0 (AT is not provided)

Upper and lower limits of output value

Select auto-tuning mode (s3)+1 b6 D511.6 0 (Step response method) Not used

exceeded

Input variation (decremental) is exceeded

Output variation (incremental) is exceeded

Output variation (decremental) is exceeded

(s1) D500 5000 (50.0) 5000 (50.0)

(s2) SD6022 According to input value According to input value

(s3) D510 500 (500 ms) 500 (500 ms)

(s3)+1 b0 D511.0 According to auto-tuning

result

(s3)+1 b5 D511.5 0 (Setting is not provided) Not used

provided)

(s3)+3 D513 According to auto-tuning

result

(s3)+4 D514 According to auto-tuning

result

provided)

(s3)+6 D516 According to auto-tuning

result

(s3)+22 D532 Not used 2000 (2 second)

(s3)+23 D533 Not used 0 (0 second)

(s3)+24 b0 D534.0 Not used Not used

(s3)+24 b1 D534.1 Not used Not used

(s3)+24 b2 D534.2 Not used Not used

(s3)+24 b3 D534.3 Not used Not used

(s3)+28 D538  Not used

(d) D502 1800 (1.8 second) According to operation

According to auto-tuning result

0 (Input filter is not provided)

According to auto-tuning result

0 (Differential gain is not provided)

According to auto-tuning result

: This is an item not occupied.

*1 The setting is always necessary. *2 When CH1 is used.

9 PID CONTROL FUNCTION

9.8 Examples of Program

Program

OUTHS ST0 K2000

MOV

SM402

Initial pulse

SM402

Initial pulse

SM402

PID contr ol is started

after auto-tuning

PID is executed

X010

PID contr ol is started

after auto-tuning

X011

PID contr ol is started

(without auto-tuning)

ST0

Heater operation

cycle

PID contr ol is started

(without auto-tuning)

X011

Auto-tuning is executed

ST0<D502

X010

MOV

SD6022

K5000

K500

SET

K0MOV

RST

D510PID

< ST0 D502

D500

RST

D500

The target value is set to 50°C

The sampling time is set to 500 ms

The operation direction is set to backward operation

PID instruction initial setting

Built-in analog monitor CH1: SD6022 CH2: SD6062

0: Enable 1: Disable

Heater output control

The upper and lower limits of output value is set to valid

The output value lower limit is set to ON for 0 sec.

The built-in analog is set to used CH CH1: SM6021 CH2: SM6061

The PID output is initialized

PID instruction drive

PID is executed

The heater operation cycle is set to 2 sec.

Preset

Heater output

D510

D511.0

D511.5

K2000MOV

The output value upper limit is set to ON for 2 sec.

D532

D533

SM6021

D502

ST0

END

X010

PID contr ol is started

after auto-tuning

RST

K1800MOV

SET

D511.6

The auto-tuning is set to step response method

The output of auto-tuning is set to 1.8 sec.

Auto-tuning initial setting

Auto-tuning is executed

D536

D511.4

9 PID CONTROL FUNCTION

9.8 Examples of Program

10 CONSTANT SCAN

Window

Displayed items

END

1 ms

7 ms

2 ms 1 ms

8 ms

1 ms 2 ms

7 ms

10 ms10 ms10 ms

1 ms

END END END00 00

Program

Wait time

END processing

END

1 ms

7 ms

1 ms

8 ms

2 ms

7 ms

9 ms9 ms8 ms

END END00 0

Program

END processing

Since the processing time differs as per the execution/non-execution of command used in the program, the scan timer

changes with every scan. By setting the constant scan, because a program can be repeatedly executed while keeping scan

time at a specified amount of time, even when the execution time of the program changes, the I/O refresh interval can be

constant.

• When constant scan is set (Settings value=10 ms)

• When constant scan time is not set

10.1 Constant scan settings

Sets the constant scan setting.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "RAS Setting"  "Constant Scan Setting"

Item Description Setting range Default

Constant Scan Sets the constant scan time. 0.2 to 2000 ms (0.1 ms units) 

10 CONSTANT SCAN

10.1 Constant scan settings

Conditions of setting time

Ex.

END 0 END 0 END 0 END 0

1 ms

2 ms

1 ms 1 ms

2 ms

1 ms 1 ms

4 ms4 ms5.3 ms4 ms

Constant scan (4 ms)

3412345 12341234 ms

1 ms

2 ms

Scan where the constant scan setting is not applied

Set a value that meets the following relational equation for the setting time of the constant scan.

"WDT setting time" > "Constant scan setting time" > "Maximum scan time of the program"

When the maximum scan time of the program is longer than the setting time of the constant scan, it results in error. The

constant scan time is ignored and it is executed with the scan time of the program.

When the constant scan time is set to 4 ms

Wait time from the execution of END process until the beginning of the next scan

When there is a processing mentioned below requested during wait time, the processing of the program is interrupted and the

corresponding process is carried out.

• Interrupt program

• Event execution type program which triggers the generation of interruption

• Device/label access service processing

10 CONSTANT SCAN

10.1 Constant scan settings

11 REMOTE OPERATION

A remote operation is an operation to externally change the operation status of the CPU module with the RUN/STOP/RESET

switch of the CPU module set to the RUN position.

The following items show the types of remote operation.

• Remote RUN/STOP

• Remote PAUSE

• Remote RESET

11.1 Remote RUN/STOP

This operation externally changes the CPU module to RUN/STOP status with the RUN/STOP/RESET switch of the CPU

module set to the RUN position. It is used to reach a CPU module in an inaccessible place or in case of changing the status of

the CPU module in the control box to RUN/STOP status with an external signal.

Applications of remote RUN/STOP

It is usable in the following cases.

• When the CPU module is in an inaccessible place

• When changing the status of the CPU module in the control box to RUN/STOP from outside

Operation during remote RUN/STOP

In case of remote RUN/STOP, the operation of the program is as shown below.

At remote STOP

A program is executed up-to END instruction and changes to STOP status.

At remote RUN

When remote RUN is executed in the STOP status, once again the CPU module turns to RUN status and the program is

executed from step 0.

Method of execution of remote RUN/STOP

The following are the methods of execution of remote RUN/STOP.

Contact method

Set the RUN contact in the parameter. The allowable device range is X0 to X17.

Execute remote RUN/STOP by contact ON/OFF. Set the correspondence of ON/OFF and RUN/STOP operation of the contact

in CPU parameters.

• When set to RUN at contact ON

When contact is set to OFF, the CPU module is in the STOP status.

When contact is set to ON, the CPU module is in the RUN status.

END

END ENDEND END/Step 0

END

RUN/STOP status

RUN contact

OFF

RUN

STOP

RUN status

11 REMOTE OPERATION

11.1 Remote RUN/STOP

• When set to STOP at contact ON

Step 0 ENDStep 0 END

OFF

STOP

RUN

STOP status

RUN contact

RUN/STOP status

RUN

OFF

Step 0 ENDStep 0 END

OFF

STOP

STOP status

Remote RUN command

Remote STOP command

RUN/STOP status

External Device

When contact is set to OFF, the CPU module is in the RUN status.

When contact is set to ON, the CPU module is in the STOP status.

Engineering tool method

Refer to the following. GX Works3 Operating Manual

Method using external devices that use SLMP

Execute by SLMP command. For details on commands, refer to the following manual. MELSEC iQ-F FX5 User's Manual (SLMP)

11 REMOTE OPERATION

11.1 Remote RUN/STOP

11.2 Remote PAUSE

RUNPAUSERUN

OFF

Step 0

Step 0 END

OFF

PAUSED

Remote RUN command

Remote PAUSE command

RUN/PAUSE status

SM204

Turns ON when the PAUSE conditions are established

With the RUN/STOP/RESET switch set to the RUN position of the CPU module, the operation status is changed to PAUSE

status from outside. The PAUSE status is a status in which operation of the CPU module is stopped by holding the ON/OFF

status of all output (Y).

Application of remote PAUSE

Remote PAUSE can be used to hold the output (Y) turned ON when the CPU module is in the RUN status, in the same ON

status, even when the CPU module is changed to STOP status.

Method of execution of remote PAUSE

The following are the methods of execution of remote PAUSE.

Engineering tool method

Refer to the following. GX Works3 Operating Manual

Method using external devices that use SLMP

Execute by SLMP command. For details on commands, refer to the following manual. MELSEC iQ-F FX5 User's Manual (SLMP)

• Turns ON the PAUSE contact (SM204) when executing the END process of the scan that has received the remote PAUSE

command. When a PAUSE contact is turned ON and the next scan is executed up-to the END process, the CPU module

enters the PAUSE status and operation is stopped.

• When a remote RUN command is received, once again an operation of the sequence program is executed from step 0.

11 REMOTE OPERATION

11.2 Remote PAUSE

Precautions

■When keeping in forced ON or OFF status in advance

Window

Displayed items

SM204

Y72

Turns ON in PAUSE status.

SM204X0

Y71

Turns OFF in PAUSE status.

M20

Y70

The ON/OFF status of Y70 is determined by the ON/OFF status of M20 in PAUSE status.

When keeping in forced ON or OFF status in advance, interlock using the PAUSE contact (SM204).

11.3 Remote RESET

This is an operation to reset the CPU module by an external operation when the CPU module is in the STOP status. In

addition, even if the RUN/STOP/RESET switch of the CPU module is set to RUN position, reset is possible when the CPU

module has stopped due to occurrence of an error that can be detected by self-diagnosis function.

Application of remote RESET

When a CPU module is in an inaccessible place and an error has occurred, CPU module can be reset by a remote operation.

Enabling remote RESET

To remotely RESET, remote RESET must be enabled.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Operation Related Setting"  "Remote Reset

Setting"

Item Description Setting range Default

Remote Reset Set whether or not to enable remote RESET. • Disable

• Enable

Disable

11 REMOTE OPERATION

11.3 Remote RESET

Method of execution of remote RESET

Precautions

The following are the methods of execution of remote RESET.

Engineering tool method

Refer to the following. GX Works3 Operating Manual

Method using external devices that use SLMP

Refer to the following. MELSEC iQ-F FX5 User's Manual (SLMP)

When executing remote RESET, the settings that allow the remote reset of the CPU parameter must be

written to CPU module beforehand. In the case that they are not set, remote RESET will not be possible.

■Remote RESET in RUN status

When the CPU module is in RUN status, it cannot be reset by remote RESET. Change the CPU module to STOP status by

operations like remote STOP and then execute remote RESET.

■State after completion of the reset process

When the reset process is completed on a CPU module on which remote RESET was executed, the CPU module will change

to an operation status set by the RUN/STOP/RESET switch. Setting the RUN/STOP/RESET switch to the STOP position, will

change the status to STOP and setting the switch to the RUN position will change the status to RUN.

• Note that if a remote RESET is executed when the CPU module has stopped due to an error, the CPU

module will change to an operation status set by the RUN/STOP/RESET switch, by reset process

completion.

• If status of CPU module does not change even after executing remote RESET by engineering tool, check

the remote reset settings in the CPU parameter. If it is not set, even after completion of the remote process

of engineering tool, reset process of the CPU module will not be carried out.

■When an error occurs due to noise

When there an error due to noise, exercise caution as there is a possibility that PLC cannot be reset by remote RESET. When

reset by remote RESET is not possible, either execute reset by RUN/STOP/RESET switch or once again start up the power of

CPU module.

11 REMOTE OPERATION

11.3 Remote RESET

11.4 Relationship Between Remote Operation and CPU

Module

Relationship between remote operation and RUN/STOP status of the CPU module

The following table shows operation status of the CPU module by the combination of remote operation and RUN/STOP status

of the CPU module.

Switch RUN/STOP status Remote operation

RUN

RUN RUN STOP PAUSE Operation not possible

STOP STOP STOP STOP RESET

*1 When executing by the RUN contact, setting of RUN contact is required in the CPU parameter. *2 Remote reset setting is required in the CPU parameter. *3 When a CPU module is changed to STOP status by a remote operation, remote reset is possible. *4 Includes even the cases where CPU module has stopped due to an error.

STOP PAUSE RESET

11 REMOTE OPERATION

11.4 Relationship Between Remote Operation and CPU Module

12 DEVICE/LABEL MEMORY AREA SETTING

(1)

(2)

The capacity of each area in device/label memory can be specified.

(1) The capacity of each area can be changed. (Page 94 Device/Label Memory Area Setting)

(2) The number of points of user devices can be changed. (Page 95 Device Setting)

12.1 Default Capacity of Each Area

The default capacity of each area is as follows.

Item Capacity

Device (high speed) Area Capacity 12 K words

Device (standard) Area Capacity 35 K words

Label Area Capacity 12 K words

Latch Label Area Capacity 1 K words

12 DEVICE/LABEL MEMORY AREA SETTING

12.1 Default Capacity of Each Area

12.2 The Setting Range of the Capacity of Each Area

The setting range of the capacity of each area on the device/label memory is as follows.

Item Setting range of capacity of each area

Device (high speed) Area Capacity 0 to 12 K words

Device (standard) Area Capacity 0 to 48 K words

Label Area Capacity 0 to 48 K words

Latch Label Area Capacity 0 to 48 K words

Restriction of a label/latch label area capacity

■When device area setting using by label/latch label is standard area

Label Area Capacity + Latch Label Area Capacity + Device (standard) Area Capacity  48 K Word (1 K word unit)

■When device area setting using by label/latch label is high speed area

Label Area Capacity + Latch Label Area Capacity + Device (high speed) Area Capacity  12 K Word (1 K word unit)

■When FB is used

In using FB, it consumes the margin area for a label addition in addition to the label defined for FB.

The following capacities are consumed per FB instance.

Label area: 48 words

Latch area: 16 words

12 DEVICE/LABEL MEMORY AREA SETTING

12.2 The Setting Range of the Capacity of Each Area

12.3 Device/Label Memory Area Setting

Operating procedure

Displayed items

The capacity of each data area allocated within the device/label memory can be changed.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Memory/Device Setting"  "Device/Label

Memory Area Setting"

"Device/Label Memory Area Setting" window

1. In "Option Battery Setting", select whether or not to use

a option battery.

2. In "Device/Label Memory Area Capacity Setting", set

the capacity of each area.

Item Description Setting range Default

Option Battery Setting Set when using option battery.

The points which can be held can be increased by this setup. The latch device of standard area can be held with a battery. The latch area of latch label can be changed to battery latch area from standard latch area (nonvolatile memory).

Device/Label Memory Area Capacity Setting

Device Area Device (high speed)

Area Capacity

Device (standard) Area Capacity

Label Area Label/Latch Label

Use Device Area Setting

Label Area Capacity Sets the capacity of the label area to be used for

Latch Label Area Capacity

Set the capacity of device (high speed) area. Page 93 The

Set the capacity of device (standard) area. Page 93 The

Select the used device area of label and latch label from standard area and high speed area. When device (high speed) area + label area + latch label area is 12 K word or less, it is possible to set label area/label latch area in high-speed area.

non-latched labels.

Sets the capacity of the latch label area to be used for latch-type labels.

• Not Mounted

• Mounted

Setting Range of the Capacity of Each Area

• Standard Area

• HighSpeed Area

Page 93 The Setting Range of the Capacity of Each Area

Not Mounted

12 K word

35 K word

Standard Area

12 K word

1 K word

12.3 Device/Label Memory Area Setting

12 DEVICE/LABEL MEMORY AREA SETTING

High-speed area: Area which can be accessed at high speed. Latch is always held by nonvolatile memory.

Standard area: Area which can be held when option battery is used. In addition, about a latched type label,

when a latch area is set as a standard latch area, latch type label is held by nonvolatile memory.

12.4 Device Setting

Window

The number of points of each user device can be changed.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "Memory/Device Setting"  "Device/Label

Memory Area Setting"  "Device/Label Memory Area Detailed Setting"  "Device (high speed) Setting/Device

(standard) Setting"

"Device (high speed) Setting" details window

"Device (standard) Setting" details window

Specify each item so that the total number of points for each user device does not exceed the capacity of the device area. (Page 94 Device/Label Memory Area Setting)

12 DEVICE/LABEL MEMORY AREA SETTING

12.4 Device Setting

Range of use of device points

The following table lists the range of use of device points to be set in the device setting.

Device (high speed) Setting

Type Device name Symbol Range of use Increment of setting

Bit Input X X0 to X1777 

Bit Output Y Y0 to Y1777 

Bit Internal relay M M0 to M32767 64 points

Bit Link relay B B0 to B7FFF 64 points

Bit Link special relay SB SB0 to SB7FFF 64 points

Bit Annunciator F F0 to F32767 64 points

Bit Step relay S S0 to S4095 

Word Timer T T0 to T1023 16 points

Word Retentive timer ST ST0 to ST1023 16 points

Word Counter C C0 to C1023 16 points

Word Long counter LC LC0 to LC1023 16 points

Word Data register D D0 to D7999 4 points

Bit Latch relay L L0 to L32767 64 points

Device (standard) Setting

Type Device name Symbol Range of use Increment of setting

Word File registers R R0 to R32767 4 points

Word Link register W W0 to W7FFF 4 points

Word Link special register SW SW0 to SW7FFF 4 points

12 DEVICE/LABEL MEMORY AREA SETTING

12.4 Device Setting

13 INITIAL DEVICE VALUE SETTING

SM402

MOV H100 D0

MOV H2020 D0

(1)

CPU module

Device initial value setting Device memory

Directly sets the initial value of a device used by the program (i.e., not via the program).

(1) If initial device values are used, a program to set data to the devices becomes unnecessary.

13.1 Setting Initial Device Values

This section describes the settings required to use initial device values.

Setting initial device values

This section describes the settings of initial device values.

Setting procedure

The procedure for using initial device values is as follows.

1. First, the user must create an initial device value file. To set initial values to a global device, create an initial device value

file (with any name) which sets these initial values, and specify the range of the values.

2. On the device memory, set up initial device value data within the range specified in the initial device value file.

GX Works3 Operating Manual

3. In the "Device Memory Register Diversion", select the device memory which was set up in Step 2. Setting "Device

Memory Register Diversion" enables data set up on the device memory to be used as initial device values for the device

which is specified in the initial device value file.

GX Works3 Operating Manual

4. Configure CPU parameters. (Page 98 Initial value setting)

5. Write the set initial device value file and the CPU parameters to the CPU module.

GX Works3 Operating Manual

6. The data in the specified initial device value file is automatically set to the specified device when the CPU module is

powered off and on, reset, or the status changes from STOP to RUN.

13 INITIAL DEVICE VALUE SETTING

13.1 Setting Initial Device Values

Initial value setting

Window

Displayed items

Configure the initial value setting.

Navigation window  [Parameter]  [FX5UCPU]  [CPU Parameter]  "File Setting"  "Initial Value Setting"

Item Description Setting range Default

Setting of Device Initial Value Use Or Not

Target Memory Sets the storage memory for the initial device value file. • Memory card

Global Device Initial Value File Name

*1 If nothing is specified, initial global device values are not applied.

Sets whether or not to use initial device values. • Not Use

•Use

• Data Memory

Sets the name of the initial global device value file.

60 characters or less 

Not Use

Data Memory

Number of initial device value settings and maximum range of one range

Up to 1000 ranges can be set in one initial device value file. Up to 8000 data points can be set in one range.

13.2 Applicable Devices

For details on devices to which initial device/label values can be set, refer to the following. GX Works3 Operating Manual

13 INITIAL DEVICE VALUE SETTING

Mitsubishi Electronics FX5 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY PRECAUTIONS

INTRODUCTION

CONTENTS

RELEVANT MANUALS

TERMS

PART 1 PROGRAMMING

Initial processing and initialization processing in RUN mode

1 PROGRAM EXECUTION

1.1 Scan Configuration

I/O refresh

Program operations

END processing

Initial scan time

1.2 Scan Time

1.3 Program Execution Sequence

Initial execution type program

1.4 Execution Type of Program

Scan execution type program

Fixed scan execution type program

Event execution type program

Stand-by type program

Subroutine program

1.5 Program Type

Interrupt program

2 PROCESSING OF OPERATIONS ACCORDING TO CPU MODULE OPERATION STATUS

Memory configuration

3 CPU MODULE MEMORY CONFIGURATION

3.1 Memory Configuration

File type and storage destination memory

Executable file operations

3.2 Files

PART 2 FUNCTIONS

4 FUNCTION LIST

5.2 Resetting of the watchdog timer

5.3 Precautions

Watchdog timer reset when executing a program repeatedly

5 SCAN MONITORING FUNCTION

5.1 Scan time monitoring time setting

Scan time when the WDT instruction is used

Clock data

Changing the clock data

6 CLOCK FUNCTION

6.1 Time Setting

Reading clock data

Precautions

6.2 Setting Time Zone

Special relay used for system clock

Special register used for system clock

6.3 System clock

Editable contents

Range changeable in a single session

Online ladder block change during the boot operation

Precautions

7 ONLINE CHANGE

7.1 Online Ladder Block Change

Interrupt priority

8 INTERRUPT FUNCTION

8.1 Multiple Interrupt Function

9.2 Basic Operation Expressions in PID Instruction

Basic operation expression for PID control

9 PID CONTROL FUNCTION

9.1 Outline of Function

9.3 How to Use PID Instruction

When auto-tuning is not executed (parameter setting)

When auto-tuning is executed

9.4 Relationship Between Parameter Setting and Auto-Tuning

9.5 Parameter

Sampling time (s3)

Operation setting (S3)+1

9.6 Details of Parameters

Input filter constant (s3)+2

Proportional gain (s3)+3

Integral time (s3)+4

Differential gain (s3)+5

Differential time (s3)+6

Alarm output (s3)+24