Mitsubishi Electronics E68, E60 User Manual

MELSEC is registered trademark of Mitsubishi Electric Corporation. Other company and product names that appear in this manual are trademarks or

registered trademarks of the respective company.

Introduction

These specifications are the programming manual used when creating the sequence program for the EZMotion-NC E60/E68 with the onboard PLC development tool or PLC development software. The PLC (Programmable Logic Controller) is largely divided into the basic commands, function commands and exclusive commands, and ample command types are available. The commands can be used according to the purpose and application such as the PLC support function used when supporting the user PLCs.

Details described in this manual

CAUTION

For items described in "Restrictions" or "Usable State", the instruction manual issued by the machine maker takes precedence over this manual. Items not described in this manual must be interpreted as "not possible". This manual is written on the assumption that all option functions are added. Refer to the specifications issued by the machine maker before starting use. Refer to the Instruction Manual issued by each machine maker for details in each machine tool. Some screens and functions may differ or may not be usable depending on the NC version.

General precautions

(1) This Instruction Manual does not explain the operation procedures for programming

the sequence program with onboard or personal computer. Refer to the related material listed below for details.

EZMotion-NC E60/E68 PLC Onboard Instruction Manual ..... IB-1500179(ENG)

EZMotion-NC E60/E68 PLC Interface Manual ..... IB-1500176(ENG)

EZMotion-NC E60/E68 PLC Development Software Manual

(MELSEC Tool Section)

..... IB-1500177(ENG)

Precautions for Safety

Always read the specifications issued by the machine maker, this manual, related manuals and attached documents before installation, operation, programming, maintenance or inspection to ensure correct use. Understand this numerical controller, safety items and cautions before using the unit. This manual ranks the safety precautions into "DANGER", "WARNING" and "CAUTION".

When there is a great risk that the user could be subject to

DANGER

WARNING

CAUTION

Note that even items ranked as " CAUTION", may lead to major results depending on the situation. In any case, important information that must always be observed is

described.

fatalities or serious injuries if handling is mistaken. When the user could be subject to fatalities or serious injuries

if handling is mistaken. When the user could be subject to injuries or when physical

damage could occur if handling is mistaken.

Not applicable in this manual.

1. Items related to product and manual

For items described as "Restrictions" or "Usable State" in this manual, the instruction

manual issued by the machine maker takes precedence over this manual.

An effort has been made to describe special handling of this machine, but items that are

not described must be interpreted as "not possible".

This manual is written on the assumption that all option functions are added. Refer to

the specifications issued by the machine maker before starting use.

Refer to the Instruction Manual issued by each machine maker for details on each

machine tool.

Some screens and functions may differ or some functions may not be usable

depending on the NC version.

DANGER

WARNING

CAUTION

2. Items related to start up and maintenance

Read this manual carefully and confirm the safety enough before executing the

operation of the program change, forced output, RUN, STOP, etc. during operation. Operation mistakes may cause damage of the machine and accidents.

1. System Configuration

1.1 System Configuration for PLC Development

The system configuration for PLC development is shown below.

1. System Configuration

Ladder editing, ladder monitor and PLC RUN/STOP, etc.

A new development is possible with the personal computer.

Setting and Display Unit

Setting andDisplayUnit

Base I/O Unit

To connector RS-232C

RS-232C

Up/downloading is carried out with the personal computer's development tool.

The ladder is developed using the setting and display unit. (Onboard development)

Personal computer Used for ladder development,

creating message, ladder monitor and saving data.

General printe

(Note) Refer to the "PLC Onboard Instruction Manual" (IB-1500179) for edition using the setting and

display unit (onboard edition), and the "PLC Development Software Manual (MELSEC Tool Section)" (IB-1500177) for development using the personal computer.

- 1 -

1. System Configuration

1.2 User PLC (Ladder) Development Procedure

The procedure for creating the user PLC, used to control the control target (machine) built into the control unit, is shown below.

Procedure Personal Computer CNC Unit

Start

Determinat ion of machine Determinat ion of CNC and PLC specific at ion s Determination of th e num ber s of I /O points

Assi gn m e n t of I/O signals Assignment of internal relays

Programming

Comm erci ally avai lable spre adsh eet too l

Device Name

X0 X -O T X-axis OT X1 Y-OT Y-axis OT X2 Z -O T Z- axis O T

GX Developer

Comment

The data created with the commercially available spreadsheet tool can be used as ladder comment data.

Use GX Developer for programming. After completion, download the data through RS-232C.

Debug gi n g operation

Program correction

Is debugging complete?

NO

Test op era ti on by CNC unit

Is test operation

NO

OK?

YES

Printout

YES

GX Developer

Onboard

BACKUP s cr een DATA IN/OUT screen

[BACKUP]

#1 BACKUP ####### #2 RESTORE #########

#( ) ( )

PARAM 3.2 / 2

Perform monitoring/correction with GX Developer's online function or onboard function.

Printout to a commercial printer connected with the personal computer from GX Developer.

Excute the ROM backup operation on the BACKUP screen. Excute the binary data output on the DATA IN/OUT screen.

Data save

Comp let i on

Program dat a

Memory cassette

(F-ROM)

- 2 -

Binary data

Program data: Saved using GX Developer

Binary data: Saved using DATA IN/OUT screen

2. PLC Processing Program

2.1 PLC Processing Program Level and Operation

Table 2.1-1 explains the contents of users PLC processing level and Fig. 2.1-1 shows the timing chart.

Table 2.1-1 PLC processing level

Program name Description (frequency, level, etc.)

High-speed processing program

Main processing program (ladder)

This program starts periodically with a time interval of 7.1ms. This program has the highest level as a program that starts periodically. It is used in signal processing where high-speed processing is required. Processing time of this program shall not exceed 0.5ms. Application example: Position count control of turret and ATC magazine

This program runs constantly. When one ladder has been executed from the head to END, the cycle starts again at the head.

7.1ms

High-speed processing

Main processing

This section is used by the controller.

(Note 1)

(Note 1) The section from the END command to the next scan is done immediately as shown with

the X section. Note that the min. scan time will be 14.2ms.

Fig. 2.1-1 PLC processing program operation timing chart

2.2 User Memory Area Configuration

The user memory area approximate configuration and size are shown below.

User PL C code ar ea

P251 P252

Control information

Message data

Contact coil comment data

High-speed processing

Internal information table of User PLC (The table is automatically generated.)

Data excepting the ladder program Alarm messages Operator messages PLC switches Load meter Contact coil comment data, etc. (Each of them can be stored in two languages.)

Total 127Kbyte

Program with the ladder language Programs excepting the main processing are

Main Processing

Max. 256Kbyte from control information to messages.

not necessary. The program order of initial, high-speed and main processing is random.

Total 4000 steps

- 3 -

3. Input/Output Signals

3.1 Input/Output Signal Types and Processing

The input/output signals handled in user PLC are as follows: (1) Input/output from/to controller (2) Input/output from/to operation board (Note 1) (3) Input/output from/to machine

The user PLC does not directly input or output these signals from or to hardware or controller; it inputs

or outputs the signals from or to input/output image memory. For the reading and writing with the hardware or controller, the controller will perform the input/output according to the level of the main process or high-speed process.

Controller

Operation board

Machine

Controller

Input/output image memory (device X, Y)

User PLC

(Note 1) The operation board here refers to when the remote I/O unit is installed on the communication

terminal.

Fig. 3.1-1 Concept of input/output processing

High-speed processing input/output

The con troller reads th e high-s peed in pu t designation input, and sets in the image memory.

User PLC high-speed proces sin g

Main processing input/output

The controller reads the input other than th e h igh-speed input designation, and s ets in the im age memor y.

P252P251

User PLC main proces sin g

The con tr oller outputs the high-speed output design ation output from the im age m emory to the machine.

Fig. 3.1-2 Input/output processing conforming to program level

- 4 -

The controller outputs the output other than the high-speed output designation f rom the ima g e memory to the m a c h i n e.

3. Input/Output Signals

Table 3.1-1 lists whether or not high-speed input/output, interrupt input and initial processing can be

performed.

Table 3.1-1 Whether or not high-speed input/output, interrupt input and initial can be performed

High-speed input specification

Input signal from control unit Output signal to control unit Input signal from machine Output signal to machine Input signal from operation board Output signal to operation board

x x x x

(2-byte units) x x x x x x

: Possible x : Not possible

The operation board in Table 3.1-1 is applied when control is performed by operation board

input/output card that can be added as NC option.

High-speed output specification

(2-byte units)

3.2 Handling of Input Signals Designated for High-Speed Input

The input/output signals used in user PLC are input/output for each program level as shown in

Fig. 3.1-2.

In high-speed processing, input/output signal for which high-speed input or output designation

(parameter) is made is input or output each time the high-speed processing program runs. In main processing, signals other than interrupt input signals or high-speed input/output designation are input/output.

When high-speed input designation signal is used in main processing, the input signal may change within one scan because high-speed processing whose level is higher than main processing interrupts. Input signal which must not change within one scan should be saved in temporary memory (M), etc., at the head of main processing and the temporary memory should be used in the main program, for example.

Input im age memory

Main processing

(1)

High-speed processing

(2)

(1) Set at th e h ead of mai n p r ocessin g.

PLC on e s c an

A B

A

(2) S e t at t h e h e ad of high -speed pr oc e ss i n g.

The hatched area is high-speed input designation part. Whenever the high-speed processing

program runs, data is reset in the hatched area. Thus, the signal in the hatched area may change in main processing (A) and (B) because the high-speed process interrupts between (A) and (B) and re-reads the input signal in the hatched area.

- 5 -

3. Input/Output Signals

3.3 High-Speed Input/output Designation Method

High-speed input/output is designated by setting the corresponding bit of the bit selection parameter

as shown below.

(1) High-speed input designation

(2) High-speed output designation

· As listed above, one bit corresponds to two bytes (16 points).

· Input or output in which 1 is set in the table is not performed at the main processing program level.

· Although the number of bits set to 1 is not limited, set only necessary ones from viewpoint of overhead.

· High-speed input/output designation corresponds to the bit selection parameter and can be set in the parameter. However, it is recommended to set in a sequence program to prevent a parameter setting error, etc.

Example: —[MOV H3 R2928]— ..... To designate X00~X0F, X10~X1F (bit 0 and 1 for H3)

- 6 -

3. Input/Output Signals

3.4 Limits for Using High Speed Processing Program

3.4.1 Separation of Main Processing and High Speed Processing Bit Operation Areas

(1) Bit operation area

When using high speed processing, the bit operation range such as the temporary memory is

separated from the main process.

(Method 1) When using the same M or G code, the bit operation area for high speed processing

and the bit operation area for main processing are separated by 64 points or more and used.

For example, the following is used M0 to M4735 for main processing Separate by 64 points or more M4800 to M5120 for high speed processing (M4736 to M4799 are not used)

(Method 2) M is used for the main processing temporary memory and G is used for the high

speed processing temporary memory.

(Note 1) The output devices handled with high speed processing must be limited to M or Y, D

and R.

(Note 2) These limits apply not only to the OUT command, but also to the PLF, PLS, SET, RST

and MOV command, etc., outputs. The devices apply to all devices including M, F, L, SM, T and C.

- 7 -

Interlock Output to NC

Separated by 64 points or mpre during the MOV command.

3. Input/Output Signals

(2) Data area

Even with commands that handle data (numerical values) during the MOV command, etc., the bit

area must be separated by 64 points or more and the data register (D) and file register (R) separated by four registers or more.

Example) Use D0 to D896 for main processing

Use D900 to D1023 for high speed processing

Separate by four registers or more

3.4.2 Separation of Remote I/O Output

When handling high speed output during the high speed process, the main processing output and

high speed processing output cannot be used together in the same remote I/O unit (32 points in channel No. setting rotary switch). A separate 32 points for high speed processing output or a 16-point remote I/O unit will be required.

MOV commands, etc., that extend over differing remote I/O units must not be enforced during either

main processing or high speed processing. If these must be enforced, the channel No. setting rotary switch for the output unit used in the main processing and the output unit used for the high speed processing must be set 1 or more apart.

M10

- 8 -

3. Input/Output Signals

(Usage example 1) Avoid interference with the main process by assigning 7 (last channel) for the

channel No. rotary switch for high speed processing output.

For example, use YE0 to YFF (for 32-point DO-L) or YE0 to YEF (for 16-point

DO-R) as the high speed processing output. (Refer to <Usage examples 1-1, 1-2 and 1-3> below.) (Usage example 2) Assign Y0 to Y1F (32-point) for high speed processing, and use Y20 and

following for the main process. (Refer to <Usage example 2> below.) (Usage example 3) Assign the device after the device used for main processing for the high speed

process. For example, if the devices up to Y2D are used for the main process, use Y40 to

Y5F (channel No. setting rotary switch No.: 2) for the high speed process. (Refer to <Usage example 3> below.)

Relation of channel No. setting switch and device No.

(Devices are YE0 and following)

DX35*/45* DX100 DX100

/120

Usage examples 1-2 show the assignment for the 16-poi nt unit as the No. of high speed output points is relatively low.

DX35*/45* DX110/120DX35*/45* DX100

DX35*/45* DX100

- 9 -

4. Parameters

4.1 PLC Constants

The parameters that can be used in user PLC include PLC constants set in the data type. Set up data is stored in a file register and is backed up. In contrast, if data is stored in the file register

corresponding to PLC constant by using sequence program MOV instruction, etc., it is backed up. However, display remains unchanged. Display another screen once and then select the screen

again. 48 PLC constants are set (the setting range is ±8 digits). (Signed 4-byte binary data) The correspondence between the PLC constants and file registers is listed below. The setting and

display screens are also shown.

Corresponding file registers

#

High order Low order

6301 R2801 R2800 6321 R2841 R2840 6341 R2881 R2880 6302 R2803 R2802 6322 R2843 R2842 6342 R2883 R2882 6303 R2805 R2804 6323 R2845 R2844 6343 R2885 R2884 6304 R2807 R2806 6324 R2847 R2846 6344 R2887 R2886 6305 R2809 R2808 6325 R2849 R2848 6345 R2889 R2888 6306 R2811 R2810 6326 R2851 R2850 6346 R2891 R2890 6307 R2813 R2812 6327 R2853 R2852 6347 R2893 R2892 6308 R2815 R1814 6328 R2855 R2854 6348 R2895 R2894 6309 R2817 R2816 6329 R2857 R2856 6310 R2819 R2818 6330 R2859 R2858 6311 R2821 R2820 6331 R2861 R2860 6312 R2823 R2822 6322 R2863 R2862 6313 R2825 R2824 6333 R2865 R2864 6314 R2827 R2826 6334 R2867 R2866 6315 R2829 R2828 6335 R2869 R2868 6316 R2831 R2830 6336 R2871 R2870 6317 R2833 R2832 6337 R2873 R2872 6318 R2835 R2834 6338 R2875 R2874 6319 R2837 R2836 6339 R2877 R2876 6320 R2839 R2838 6340 R2879 R2878

PLC constant screen

Corresponding file registers Corresponding file registers

#

High order Low order

#

High order Low order

- 10 -

4. Parameters

4.2 Bit Selection Parameters

The parameters that can be used in user PLC include bit selection parameters set in the bit type. Set up data is stored in a file register and is backed up. For use in bit operation in a sequence program, the file register contents are transferred to temporary

memory (M) using the MOV command. In contrast, if data is stored in the file register corresponding

to bit selection by using the MOV command etc., it is backed up. However, display remains

unchanged. Once display another screen and again select screen. The corresponding between the bit selection parameters and file registers is listed below. The setting

and display screens are also shown.

Corresponding

#

file register

6401 R2900-LOW 6433 R2916-LOW 6449 R2924-LOW 6481 R2940-LOW 6402 R2900-HIGH 6434 R2916-HIGH 6450 R2924-HIGH 6482 R2940-HIGH 6403 R2901-L 6435 R2917-L 6451 R2925-L 6483 R2941-L 6404 R2901-H 6436 R2917-H 6452 R2925-H 6484 R2941-H 6405 R2902-L 6437 R2918-L 6453 R2926-L 6485 R2942-L 6406 R2902-H 6438 R2918-H 6454 R2926-H 6486 R2942-H 6407 R2903-L 6439 R2919-L 6455 R2927-L 6487 R2943-L 6408 R2903-H 6440 R2919-H 6456 R2927-H 6488 R2943-H 6409 R2904-L 6441 R2920-L 6457 R2928-L 6489 R2944-L 6410 R2904-H 6442 R2920-H 6458 R2928-H 6490 R2944-H 6411 R2905-L 6443 R2921-L 6459 R2929-L 6491 R2945-L 6412 R2905-H 6444 R2921-H 6460 R2929-H 6492 R2945-H 6413 R2906-L 6445 R2922-L 6461 R2930-L 6493 R2946-L 6414 R2906-H 6446 R2922-H 6462 R2930-H 6494 R2946-H 6415 R2907-L 6447 R2923-L 6463 R2931-L 6495 R2947-L 6416 R2907-H 6448 R2923-H 6464 R2931-H 6496 R2947-H 6417 R2908-L 6465 R2932-L 6418 R2908-H 6466 R2932-H 6419 R2909-L 6467 R2933-L 6420 R2909-H 6468 R2933-H 6421 R2910-L 6469 R2934-L 6422 R2910-H 6470 R2934-H 6423 R2911-L 6424 R2911-H 6472 R2935-H 6425 R2912-L 6473 R2936-L 6426 R2912-H 6474 R2936-H 6427 R2913-L 6475 R2937-L 6428 R2913-H 6476 R2937-H 6429 R2914-L 6477 R2938-L 6430 R2914-H 6478 R2938-H 6431 R2915-L 6479 R2939-L 6432 R2915-H 6480 R2939-H

Corresponding

#

file register

Use bit selection parameters #6401~#6448 freely.

Corresponding

#

file register

6471 R2935-L

Corresponding

#

file register

Bit selection parameter #6449~#6496 are PLC operation selection parameters used by the machine manufacturer and MITSUBISHI. The contents are fixed.

- 11 -

Bit selection screen

4. Parameters

- 12 -

Contents of bit selection parameters #6449~#6496

4. Parameters

Symbol

name

#6449

R2924 L

0

#6450

R2924 H

1

#6451

R2925 L

2

#6452

R2925 H

3

#6453

R2926 L

4

#6454

R2926 H

5

#6455

R2927 L

6

7 6 5 4 3 2 1 0

NC card Controller thermal alarm on

Setting display unit thermal alarm on

External alarm message display

- -

-

- - - - -

- - - - - - - -

-

Alarm/ operator change

GX-Developer communication on

GOT communication connection

Full screen display of message

PLC development environment selection

Counter C retention

Counter (fixed) retention

-

Integrating timer T retention

Operator message on

Onboard editing not possible

Integrating timer (fixed) retention

PLC counter program on

1 0 R systemF system

Equivalent of remote I/O 2ch

PLC timer program on

Alarm message on

- Onboard on

-

Message language

change code

#6456

R2927 H

7

#6457

R2928 L

8

#6458

R2928 H

9

#6459

R2929 L

A

#6460

R2929 H

B

#6461

R2930 L

C

#6462

R2930 H

D

#6463

R2931 L

E

- - - - - - - -

High-speed input specification 1

High-speed input specification 2

High-speed input specification 3 (Spare)

High-speed input specification 4 (Spare)

High-speed output specification 1

High-speed output specification 2

High-speed output specification 3 (Spare)

#6464

R2931 H

F

High-speed output specification 4 (Spare)

- 13 -

Symbol

name

#6465

0

R2932 L

#6466

1

R2932 H

#6467

2

R2933 L

#6468

3

R2933 H

#6469

4

R2934 L

#6470

5

R2934 H

#6471

6

R2935 L

#6472

7

R2935 H

#6473

8

R2936 L

#6474

9

R2936 H

#6475

A

R2937 L

#6476

B

R2937 H

#6477

C

R2938 L

#6478

D

R2938 H

#6479

E

R2939 L

#6480

F

R2939 H

4. Parameters

7 6 5 4 3 2 1 0

- -

-

- -

-

Standard PLC

parameter

-

MC alarm 4 output off

-

(Note 1) Be sure to set the bits indicated - and blanks to 0. (Note 2) Parameters #6481 to #6496 are reserved for debugging by Mitsubishi.

- 14 -

5. Explanation of Devices

5.1 Devices and Device Numbers

The devices are address symbols to identify signals handled in PLC. The device numbers are serial

numbers assigned to the devices. The device numbers of devices X, Y and H are represented in hexadecimal notation. The device numbers of other devices are represented in decimal notation.

5.2 Device List

Device Device No. Unit Details

X* X0~XABF (2752 points) 1 bit Input signal to PLC. Machine input, etc. Y* Y0~YDEF (3584 points) 1 bit Output signal from PLC.

Machine output, etc. M M0~M8191 (8192 points) 1 bit Temporary memory F F0~F127 (128 points) 1 bit Temporary memory, alarm message

interface L L0~L255 (256 points) 1 bit Latch relay (backup memory) SM* SM0~SM127 (128 points) 1 bit Special relay T T0~T15 (16 points) 1 bit or 16 bits 10ms unit timer T16~T95 (80 points) 1 bit or 16 bits 100ms unit timer T96~T103 (8 points) 1 bit or 16 bits 100ms unit integrating timer C C0~C23 (24 points) 1 bit or 16 bits Counter D D0~D1023 (1024 points) 16 bits or 32 bits Data register for arithmetic operation R* R0~R8191 (8192 points) 16 bits or 32 bits File register. R500 to R549 and R1900 to

R2799 are released to the user for interface

between the PLC and controller. R1900 to

R2799 are backed up by the battery. Z Z0~Z1 (2 points) 16 bits Index of D or R address (±n) N N0~N7 (8 points) — Master control nesting level P* P0~P255 (256 points) — Label for conditional jump and subroutine

call K K-32768~K32767 — Decimal constant for 16-bit command K-2147483648~

K2147483647 H H0~HFFFF — Hexadecimal constant for 16-bit command H0~HFFFFFFFF — Hexadecimal constant for 32-bit command

(Note 1) The applications of the devices having a * in the device column are separately determined.

Do not use the undefined device Nos., even if they are open.

(Note 2) When using temporary memory such as M device, separate READ and WRITE every 8bits.

— Decimal constant for 32-bit command

- 15 -

5. Explanation of Devices

5.3 Detailed Explanation of Devices

5.3.1 Input/output X, Y

Input/output X and Y are a window for executing communication with the PLC and external device or

CNC.

Input X (a) This issued commands or data from an external device such as a push-button, changeover

switch, limit switch or digital switch to the PLC.

(b) Assuming that there is a hypothetical relay Xn built-in the PLC per input point, the program

uses the "A" contact and "B" contact of that Xn.

(c) There is no limit to the No. of "A" contacts and "B" contacts of the input Xn that can be used in

the program.

Hypothetical relay

PLC

PB1

LS2

PB16

X10

X11

X1F

Input circuit

X10

X11

X1F

Program

(d) The input No. is expressed with a hexadecimal.

Output Y (a) This outputs the results of the program control to the solenoid, magnetic switch, signal lamp or

digital indicator, etc.

(b) The output can be retrieved with the equivalent of one "A" contact. (c) There is no limit to the No. of "A" contacts and "B" contacts of the output Yn that can be used in

the program.

PLC

Y10

24V

Y10

Load

Y10

Program

(d) The output No. is expressed with a hexadecimal.

- 16 -

Output circuit

5. Explanation of Devices

5.3.2 Internal Relays M and F, Latch Relay L

The internal relay and latch relay are auxiliary relays in the PLC that cannot directly output to an

external source.

Internal relays M

(a) These relays are cleared when the power is turned OFF. (b) There is no limit to the No. of "A" contacts and "B" contacts of the internal relays that can be

used in the program.

(c) The internal relay No. is expressed with a decimal.

Internal relay F

Internal relay F is an interface for the alarm message display. Use the bit selection parameter to determine whether to use this relay for the alarm message interface. The target will be F0 to F127. This internal relay can be used in the same manner as the internal relay M when not used as the alarm message interface.

Latch relay L

(a) The original state is held even when the power is turned OFF. (b) There is no limit to the No. of "A" contacts and "B" contacts of the latch relay that can be used

in the program.

(c) The latch No. is expressed with a decimal.

5.3.3 Special Relays SM

The special relays are relays having fixed applications such as the carrier flag for operation results

and the display request signal to the setting and display unit. Even the relays of SM0 to SM127 that are not currently used must not be used as temporary memory.

Special relays SM

(a) This relay is cleared when the power is turned OFF. (b) There is no limit to the No. of "A" contacts and "B" contacts of the special relays that can be

used in the program.

(c) The special relay No. is expressed with a decimal.

- 17 -

5. Explanation of Devices

5.3.4 Timer T

(1) The 100ms timer, 10ms timer and 100ms integrated timer are available for this count-up type

timer.

100ms Timer T

(a) When the input conditions are set, the count starts. When the set value is counted, that timer

contact will turn ON.

(b) If the input conditions are turned OFF, the 100ms timer count value will be set to 0, and the

contact will turn OFF.

ON

X5

Input conditions

T57 K 5 0

100ms timer

T57 coll OFF

T57 c ontact OFF

X5 OFF

ON

5 seconds

ON

(c) When #6449 bit0=1, the value is set with a decimal (Kn), and can be designated from 1 to

32767 (0.1 to 3276.7 s). The data register (D) data can also be used as the setting value. File

register (R) cannot be used. 10ms Timer T (a) When the input conditions are set, the count starts. When the set value is counted, that timer

contact will turn ON. (b) If the input conditions are turned OFF, the 10ms timer count value will be set to 0, and the

contact will turn OFF.

ON

X5

T1 K500

Input conditions

10ms timer

X5 OFF

T1 coll OFF

T1 contact OFF

ON

5 seconds

ON

(c) When #6449 bit0=1, the value is set with a decimal (Kn), and can be designated from 1 to

32767 (0.01 to 327.67 s). The data register (D) data can also be used as the setting value. File

register (R) cannot be used.

- 18 -

5. Explanation of Devices

100ms integrated timer T

(a) When the input conditions are set, the count starts. When the set value is counted, that timer contact

will turn ON.

(b) Even the input conditions are turned OFF, the 100ms integrated timer current value (count value)

will be held, and the contact state will not change.

(c) The 100ms integrated timer count value will be set to 0 and the contact will turn OFF when the RST

command is executed.

X5

Input conditions

X7

100ms cumulative timer

T233 K100

RST T233

X5 OF F

X7 OF F

ON

9 seconds

1.5 seconds

6 seconds

ON

Reset input

T233 reset command

T233 coll OFF

T233 contact OFF

T233 current value

ON

9 seconds

1 seconds

ON

0 1 90 91 100 0 1 60

~

6 seconds

~

(d) When #6449 bit0=1, the value is set with a decimal (Kn), and can be designated from 1 to 32767

(0.1 to 3267.7 s). The data register (D) data can also be used as the setting value. File register (R) cannot be used.

(e) When the bit selection parameter (#6449 bit2=1) is set, the 100ms integrated timer current value

(count value) will be held even when the power is turned OFF.

(2) With the device T, the contact • coil is handled as bit device, and the current value is handled as

word device. In the function commands described after, the word device T indicates the current value even if there is no description about it.

(3) When #6449 bit0=0 is set, timer value can be specified with the parameter set in the setting and

display unit. At this time, the relationship between timer device and parameter is as shown below.

Device Parameter T0 to T15 T56 to T135 T232 to T239

#6000 to #6015 #6016 to #6095 #6096 to #6103

(Note 1) T16 to T55, T136 to T231, and T240 to T255 are specified with a program (Kn) regardless of

#6449 bit0.

(Note2) Even when #6449 bit0=0, Kn is required for a sequence program. Note that, however, the Kn

value is invalid.

(Note 3) When the data register (D) is used as setting value, the data register (D) details will be the

setting value regardless of #6449 bit0.

- 19 -

5. Explanation of Devices

5.3.5 Counter C

(1) The counter counts up and detects the rising edge of the input conditions. Thus, the count will not

take place when the input conditions are ON.

Counter C

(a) The value is set with a decimal, and can be designated from 1 to 32767. The data register (D)

data can also be used as the setting value. File register (R) cannot be used.

(b) The counter count value will not be cleared even if the input conditions turn OFF. The counter

count value must be cleared with the RST command.

(c) When the bit selection parameter is set, the counter current value (count value) will be held

even when the power is turned OFF. Note that some can not be held depending on the version of CNC.

(2) With the device C, the contact • coil is handled as bit device, and the current value (counter

value) is handled as word device. In the function commands described after, the word device C indicates the current value (counter value) even if there is no description about it.

(3) The counter setting value can be set with the setting and display unit using device C. (Variable

counter)

Whether the setting value (Kn) programmed with the sequence program or the setting value set

from the setting and display unit is valid is selected with the bit selection parameters. The changeover is made in a group for C0 to C23. Even when set from the setting and display unit, the setting value (Kn) program will be required in the sequence program. However, the Kn value will be ignored. When the data register (D) is used for the setting value, the data register (D) details will be used as the setting value regardless of the parameter.

(Note) The setting value for device C24 to C127 of counter C cannot be set from the setting and

display unit.

5.3.6 Data Register D

(1) The data register is the memory that stores the data in the PLC. (2) The data register has a 1-point 16-bit configuration, and can be read and written in 16-bit units. To handle 32-bit data, two points must be used. The data register No. designated with the 32-bit

command will be the low-order 16-bit, and the designated data register No. +1 will be the high-order 16-bit.

Circuit example

0

Data storage

D1

Higth-order 16 -bit

(X1F X10)

~

DMOV K8X0

D0

Low-order 16-bit

(XF X0)

~

D0

The X0 to 1F data is stored in D0,1.

(3) The data that is stored once in the sequence program is held until other data is stored. (4) The data stored in the data register is cleared when the power is turned OFF.

(5) Values that can be stored: Decimal -32768 to 32767 For 16-bit command Hexadecimal 0 to FFFF Decimal -2147483648 to 2147483647 For 32-bit command Hexadecimal 0 to FFFFFFFF

(Using Dn)

(Using Dn+1, Dn)

(6) Data registers D0 to D1023 are all user release data registers.

- 20 -

5. Explanation of Devices

5.3.7 File Register R

(1) As with the data registers, the file registers are memories used to store data. However, there are

some that have fixed applications, and those that are released. (2) The file register has a 1-point 16-bit configuration, and can be read and written in 16-bit units. To handle 32-bit data, two points must be used. The file register No. designated with the 32-bit

command will be the low-order 16-bit, and the designated file register No. +1 will be the

high-order 16-bit.

(Example) Use of the DMOV command is shown below.

Circuit example

0

Data storage

R1

Higth-order 16 -bit

(X1F~X10)

DMOV K8X0

R0

Low-order 16-bit

(XF~X0)

R0

The X0 to 1F data is stored in R0,1.

(3) The data that is stored once in the sequence program is held until other data is stored. (4) With the file registers, the following registers are the user release. R500 to R549, R1900 to R2799 The following registers of the registers above are not cleared when the power is turned OFF. R1900 to R2799 The other file registers have fixed applications such as interface of the PLC and CNC, parameter

interface, etc.

(5) Values that can be stored: Decimal -32768 to 32767 For 16-bit command Hexadecimal 0 to FFFF Decimal -2147483648 to 2147483647 For 32-bit command Hexadecimal 0 to FFFFFFFF

(Using Dn)

(Using Dn+1, Dn)

- 21 -

5. Explanation of Devices

5.3.8 Index Registers Z

(1) The index registers are used as ornaments for the device (T, C, D, R).

159

165

MOV

K3 Z0

K4X0

D5Z0

D5Z0 Indicates D (5+Z) = D8

(2) The index register has a 1-point 16-bit configuration, and can be read and written in 16-bit units. (3) The data stored in the index register is cleared when the power is turned OFF. (4) Values that can be stored: Decimal -32768 to 32767

Hexadecimal 0 to FFFF

(Note) The CRT display of the index registers Z is as shown below.

MOV

MOV X0 D5

K3

K4

Z0 Z0

- 22 -

5. Explanation of Devices

5.3.9 Nesting N

(1) This indicates the master control nesting structure. (2) The master control nesting (N) is used in order from smallest number.

N0

A

M15

MC N0 M15

Execute when A conditions are set.

Execute when A,B conditions are set.

Execute when A,B,C conditions are set.

Reset MC2 to 7 Execute when A,B conditions are set.

Reset MC1 to 7 Execute when A conditions are set. Reset MC0 to 7

Execute regardless of A,B,C conditions.

N1

N2

M16

M17

B

C

MC N1 M16

MC N2 M17

MCR N2

MCR

N1

MCR

N0

(a) The conditions for each master control to turn ON are as follow.

MC N0 M15 .......... ON when condition A is ON

MC N1 M16 .......... ON when conditions A, B are ON

MC N2 M17 .......... ON when conditions A, B, C are ON

(b) The timer and counter when the master control is OFF is as follows.

· 100ms timer, 10ms timer : The count value is set to 0.

· 100ms integrated timer : The current count value is retained.

· Counter : The current counter value is retained.

· OUT command : All turn OFF.

- 23 -

Mitsubishi Electronics E68, E60 User Manual

Introduction

Precautions for Safety

CONTENTS

1. System Configuration

1.1 System Configuration for PLC Development

1.2 User PLC (Ladder) Development Procedure

2. PLC Processing Program

2.1 PLC Processing Program Level and Operation

2.2 User Memory Area Configuration

3. Input/Output Signals

3.1 Input/Output Signal Types and Processing

3.2 Handling of Input Signals Designated for High-Speed Input

3.3 High-Speed Input/output Designation Method

3.4 Limits for Using High Speed Processing Program

3.4.1 Separation of Main Processing and High Speed Processing Bit Operation Areas

3.4.2 Separation of Remote I/O Output

4. Parameters

4.1 PLC Constants

4.2 Bit Selection Parameters

5. Explanation of Devices

5.1 Devices and Device Numbers

5.2 Device List

5.3 Detailed Explanation of Devices

5.3.1 Input/output X, Y

5.3.2 Internal Relays M and F, Latch Relay L

5.3.3 Special Relays SM

5.3.4 Timer T

5.3.5 Counter C

5.3.6 Data Register D

5.3.7 File Register R

5.3.8 Index Registers Z

5.3.9 Nesting N