Mitsubishi Electric MELSEC FX, RS-232C, RS-422, RS-485 User Manual

MELSEC FX Series

Programmable Logic Controllers

User's Manual

Communications Modules

RS-232C, RS-485, RS-422

INDUSTRIAL AUTOMATION

MITSUBISHI ELECTRI

MIT

SUBIS

HI ELECTRI

Art. no.: 070143 15 04 2003 JY992D69901 Version E

Foreword

• This manual contains text, diagrams and explanations which will guide the reader in the correct installation and o peration of the communication facilities of FX seri es. It should be read and understood before attempting to install or use the unit.

• Further information can be found in the re specti ve manual of each programmab l e control ler.

• If in doubt at any stage of the installation of the communication faciliti es of FX series always consult a professional electrical engineer wh o is qualified and trained to the local and national standards that applies to the installation site.

• If in doubt about the operation or use of the communication facilities of FX series please consult the nearest Mitsubishi Elec tric dis tributor.

• This manual is subject to change without notice.

FX communication

FX COMMUNICATION (RS-232C, RS-485, RS-422)

USER’S MANUAL

Brand and product names described by/in this manual are trademarks or registered trademarks of the irrespective owners.

Manual number : JY992D69901 Manual revision : E

Date : April 2003

FX communication

FAX BACK

Mitsubishi has a world wide reputation f or its eff orts in continually de veloping and pushing back the frontiers of industrial automation. What is sometimes overlooked by the user is the care and attention to detail that is taken with the documentation. However, to continue this process of improvement, the comments of th e Mitsubish i users ar e always welcomed. This pag e has been designed for you, the reader, to fill in your comments and fax them back to us. We look forward to hearing from you.

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FX communication

iii

FX communication

Guidelines for the Safety of the User and Protection of the programmable controllers

This manual provides information for the use of the FX series communication unit. The manual has been written to be used by trained and competent personnel. The definition of such a person or persons is as follows;

a) Any engineer who is responsible for the planning, design and construction of automatic

equipment using the product associated w ith this manual should be of a competen t nature, trained and qualified to the loc al and national sta ndards required to fulfill that role. These engineers should be fully aware of all aspects of safety with regards to automated equipment.

b) Any commissioning or service engineer must be of a competent nature, trained and

qualified to the local and national standards require d to fulfill that job. These engineers should also be trained in the use and maintenance of the completed product. This includes being completely f amili ar with all ass ociated doc umentation for the said product. All maintenance should be carried out in accordance with established safety pra ctices.

c) All operators of the completed equipment (see Note) should be trained to use this

product in a safe manner in compliance to established safety practices. The operators should also be familiar with documentation which is associated with the operation of the completed equipment.

Note :

Note: the term ‘completed equipment’ refers to a third party constructed device which contains or uses the product associated with this manual.

Notes on the Symbols Used in this Manual

At various times throughout this manual cer tain symbols will be used t o highlight points of information which are intended to ensure the users personal safety and protect the integrity of equipment. Whenever any of the following symbols are encountered its associated note must be read and understood. Each of the symbols used will no w be listed wi th a brief description of its meaning.

Hardware Warnings

1) Indicates that the identified danger

WILL

cause physical and prop erty damage.

2) Indicates that the identified danger could

POSSIBLY

cause physical and proper ty

damage.

3) Indicates a point of further interest or further explanation.

Software Warnings

4) Indicates special care must be taken when using this element of software.

5) Indicates a special point which the user of the associate software element should be aware of.

6) Indicates a point of interest or further explanation.

FX communication

• Under no circumstances will Mitsubishi Electric be liable responsible for any consequential damage that may arise as a result of the installation or use of this equipment.

• All examples and diagrams shown in this manual are intended only as an aid to understanding the text, not to guarantee operation. Mitsubishi Electric will accept no responsibility for actual use of the product based on these illustrative examples.

• Please contact a Mitsubishi Electric distributor for more information concerning applications in life critical situations or high reliability.

FX communication

vii

Further Information Manual List

Table 1: Further Information Manual List

Manual name Manual No. Description

Hardware Manual JY992D83901

This manual contains written hardware explanation of wiring, installation and specification, etc. regarding the FX

Series programmable controller.

/ FX0N Hardware Manual JY992D47501

This manual contains written hardware explanation of wiring, installation and specification, etc. regarding the FX

and FX0N Series programmable controllers.

FX Hardware Manual JY992D47401

This manual contains written hardware explanation of wiring, installation and specification, etc. regarding the FX Series programmable controller.

Supplementary Manual JY992D50201

This manual contains supplementary data regarding the FX Series programmable controller Hardware Manual

Hardware Manual JY992D88201

This manual contains written hardware explanation of wiring, installation and specification, etc. regarding the FX

Series programmable controller.

Hardware Manual JY992D66301

This manual contains written hardware explanation of wiring, installation and specification, etc. regarding the FX

Series programmable controller.

2NC

Hardware Manual JY992D76401

This manual contains written hardware explanation of wiring, installation and specification, etc. regarding the FX

2NC

Series programmable controller.

FX Programming Manual JY992D48301

This manual contains written instructions regarding the FX

, FX0S, FX0N, FX, FX2C, FX2N and FX

2NC

Series

programmable controllers.

FX Programming Manual

ΙΙΙΙΙΙΙΙ

JY992D88101

This manual contains written instructions regarding the FX

, FX1N, FX2N and FX

2NC

Series

programmable controllers.

FX / FX

-485ADP User’s

Guide

JY992D53201

This manual contains written hardware explanation of installation and specification regarding the FX-485ADP and FX

-485ADP.

2NC

-485ADP Installation

Manual

JY997D01201

This manual contains written hardware explanation of installation and specification regarding the FX

2NC

-485ADP.

FX-232ADP User’s Guide JY992D48801

This manual contains written hardware explanation of installation and specification regarding the FX-232ADP.

-232ADP User’s Guide JY992D51301

This manual contains written hardware explanation of installation and specification regarding the FX

-232ADP.

2NC

-232ADP Installation

Manual

JY997D01101

This manual contains written hardware explanation of installation and specification regarding the FX

2NC

-232ADP.

-232-BD User’s Guide JY992D66001

This manual contains written hardware explanation of installation and specification regarding the FX

-232-BD.

FX communication

viii

FX2N-485-BD Hardware Manual

JY992D73401

This manual contains written hardware explanation of installation and specification regarding the FX

-485-BD.

-422-BD User’s Guide JY992D66101

This manual contains written hardware explanation of installation and specification regarding the FX

-422-BD.

-232-BD Hardware

Manual

JY992D84501

This manual contains written hardware explanation of installation and specification regarding the FX

-232-BD.

-485-BD Hardware

Manual

JY992D84301

This manual contains written hardware explanation of installation and specification regarding the FX

-485-

BD.

-422-BD User’s Guide JY992D84101

This manual contains written hardware explanation of installation and specification regarding the FX

-422-BD.

FX-485-IF Hardware Manual JY992D81801

This manual contains written hardware explanation of installation and specification regarding the FX-485-IF.

Table 1: Further Information Manual List

Manual name Manual No. Description

Table of Contents

Further Informa t ion M a nu a l Li st ...................... ................... .................... ......vii

1. Introduction .............................................................................................1-1

1.1 Abbreviations, Generic Names and Terms Used in This Manual..........................1-1

1.2 Communication Types...........................................................................................1-2

1.3 System Configuration ............................................................................................1-3

1.3.1 N:N Network .................. ....... ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... ...... .......................1-3

1.3.2 Parallel Link ....................................... ...... ....... ...... ....... ...... ...... ....... ...... ....... .............................1-3

1.3.3 Computer Link.......... ...... ....... ...... .................................................... ..........................................1-5

1.3.4 No Protocol Communication ............. ...... ....... ...... ....... ...... .......................................................1-6

1.4 Supported Functions and Applicable Versions .....................................................1-6

2. Specifications..........................................................................................2-1

2.1 Communication Specification................................................................................2-1

2.2 Communication Time.............................................................................................2-2

2.2.1 N:N network ............................................................................ ....... ..........................................2-2

2.2.2 Parallel link .............. ...... ....... ...... ....... .......................................................................................2-2

2.2.3 Computer link........................ ...... ....... ...... ....... ...... .................................................... ................2-3

3. Wiring......................................................................................................3-1

3.1 Caution on cable selection................................. .... ..... .......................................... .3-2

3.1.1 FX1N-485-BD, FX2N-485-BD, FX

2NC

-485ADP..........................................................................3-2

3.1.2 FX

-485ADP .......................................................................................................................... 3-2

3.1.3 FX

-40AW.................................................................................................................................3-2

3.2 Using RS-232C Interface.......................................................................................3-3

3.2.1 Using RS Instruction or Computer Link.....................................................................................3-3

3.2.2 Using FX

-232IF.....................................................................................................................3-4

3.3 Using RS-485 Interface.........................................................................................3-6

3.3.1 Wiring Selection.............................................. ...... ....... ...... ...... .................................................3-6

3.3.2 Terminal Resistor........................ ....... ...... .................................................... ...... ....... ................3-6

3.3.3 One-pair Wiring ................................. ...... ....... ...... ....... .............................................................3-7

3.3.4 Two-pair Wiring ................................. ...... ....... ...... ....... ...... ...... ....... ...... ....... ...... ....... . ...............3-8

3.4 Parallel Link...........................................................................................................3-9

3.4.1 FX

2N(1N)

-485-BD and FX0N-485ADP........................................................................................3-9

3.4.2 FX

-485ADP and FX0N-485ADP ..........................................................................................3-10

3.4.3 FX

2N(1N)

-485-BD and FX

2N(1N)

-485-BD .................................................................................3-11

3.4.4 FX

2NC

-485ADP and FX0N-485ADP........................................................................................3-12

3.4.5 FX

2N(1N)

-485-BD and FX

2NC

-485ADP....................................................................................3-13

3.4.6 FX

2NC

-485ADP and FX

2NC

-485ADP......................................................................................3-14

3.4.7 FX

-40AW and FX2-40AW ............................. ............. ............ ............. ............. ............. ........ 3-15

3.4.8 FX

-40AP and FX2-40AP ............................... ................... ................... .................... ..............3-15

4. N:N Network............................................................................................4-1

4.1 Related Flags and Data Registers.........................................................................4-1

4.1.1 Auxiliary Relays .......................................................................................... .............................4-1

4.1.2 Data Registers ..................... ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... ...... ....... ................4-2

FX communication

4.2 Setting....................................................................................................................4-3

4.2.1 Setting the Station No. (D8176)................................................................................................4-3

4.2.2 Setting the Total Number of Slave Stations (D8177) ...............................................................4-3

4.2.3 Setting the Refresh Range (D8178)..........................................................................................4-4

4.2.4 Setting Retry Count (D8179).....................................................................................................4-5

4.2.5 Setting Comms Time-out (D8180) ............................................................................................4-5

4.2.6 Program Used for Setting ........................................................................................................4-6

4.3 Example Program..................................................................................................4-7

4.3.1 System Configuration .... ....... ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... ...... .......................4-7

4.3.2 Operations ............................ ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... .............................4-7

4.3.3 Example of Setting Program.....................................................................................................4-8

4.3.4 Example of Error Program .......................................................................................................4-8

4.3.5 Example of Operation Program ................................................................................................4-9

5. Parallel link..............................................................................................5-1

5.1 Related Flags and Data Registers ........................................................................5-1

5.2 Mode and Link Device...........................................................................................5-2

5.2.1 Normal Mode (Special auxiliary relay M8162: OFF) ................................................................5-2

5.2.2 High Speed Mode (Special auxiliary relay M8162: ON) ...........................................................5-3

5.3 Example Program..................................................................................................5-4

5.3.1 Normal Mode ..................................... ................................................... ....................................5-4

5.3.2 High Speed Mode .....................................................................................................................5-4

6. Communication format (D8120)....................................... .......................6-1

6.1 What Is Communication Format? ..........................................................................6-1

6.2 Related Flags and Data Registers.........................................................................6-1

6.2.1 Special Auxiliary Relays ........................................................................................................... 6-1

6.2.2 Special Data Registers ............................................................................................................6-1

6.3 Communication Format (D8120) ..........................................................................6-2

6.4 Example of setting program...................................................................................6-3

7. Computer Link.........................................................................................7-1

7.1 Data Flow by Link..................................................................................................7-1

7.2 Information Needed Before Programming.............................................................7-3

7.2.1 Programmable Controller Operation.........................................................................................7-3

7.2.2 Computer Notes................................. ................................................... ....................................7-3

7.3 How to Read a Control Protocol Diagram..............................................................7-4

7.4 Basic Formats of Dedicated Protocol ....................................................................7-5

7.4.1 Control Protocol Format 1 ........................................................................................................7-6

7.4.2 Control Protocol Format 4.........................................................................................................7-7

7.4.3 Control Protocol Parts Explained..............................................................................................7-8

7.4.4 Time-out Check Time..............................................................................................................7-11

7.5 Communication Timing Chart..............................................................................7-12

7.5.1 Reading Data from Programmable controller .........................................................................7-12

7.5.2 Writing Data to Programmable Controller............................................................................... 7-12

7.5.3 Communication Time...................................... ................................................... .....................7-13

7.6 Character Area Data Transmission.....................................................................7-14

7.6.1 Bit Device Memory..................................................................................................................7-14

7.6.2 Word Device Memory .............................................................................................................7-15

7.7 Commands and Device Ranges..........................................................................7-16

7.7.1 Commands........ ....... ...... ....... ...... ....... ...... .................................................... ...... .....................7-16

7.7.2 Device specification ranges....................................................................................................7-17

7.8 Example Computer Program for Loopback Test .................................................7-18

FX communication

8. Commands.............. ........................................................................ ........8-1

8.1 Batch Read of Bit Device (BR command)..............................................................8-2

8.2 Batch Read of Word Device (WR command)........................................................8-3

8.3 Batch Write of Bit Device (BW command).............................................................8-5

8.4 Batch Write of Word Device (WW command)........................................................8-6

8.5 Test of Bit Device (BT command)..........................................................................8-8

8.6 Test of Word Device (WT command) ....................................................................8-9

8.7 Remote RUN/STOP (RR, RS commands) ..........................................................8-10

8.7.1 Operation of Remote RUN/STOP...........................................................................................8-10

8.7.2 Conditions for Valid Execution of Remote RUN/STOP...........................................................8-10

8.7.3 Control Specification and Examples of Remote RUN/STOP..................................................8-11

8.8 Reading The Programmable Controller Type (PC command).............................8-12

8.8.1 Type Codes .......................... ...... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... ...... ....... ..............8-12

8.8.2 Control Specification and Example.........................................................................................8-13

8.9 Global Function (GW command).........................................................................8-14

8.9.1 Control Specification and Example of Global Function...........................................................8-14

8.10 On-demand Function.........................................................................................8-15

8.10.1 Special Devices Used in On-demand Function ....................................................................8-15

8.10.2 On-demand Control Protocol................................................................................................8-16

8.10.3 Specification and Example of On-demand............................................................................ 8-18

8.11 Loopback Test...................................................................................................8-21

9. RS instruction..........................................................................................9-1

9.1 Function and Operation.........................................................................................9-1

9.1.1 Send and Receive Program......................................................................................................9-1

9.1.2 Operation of RS Instruction.......................................................................................................9-3

9.1.3 Related Flags and Data Registers............................................................................................9-4

9.2 Hardware Hand Shake Operation..........................................................................9-6

9.2.1 FX, FX2C, FX

0N,

FX1S, FX1N and FX

(earlier than V 2.00)....................................................9-6

9.2.2 FX

, FX

2NC

(V 2.00 or later) .................................................................................................9-10

9.3 Number of Communication Data.........................................................................9-13

9.3.1 Deal with 16 bits Data............................................................................................................. 9-13

9.3.2 Deal with 8 bits Data............................................................................................................... 9-14

9.4 Example Program................................................................................................9-15

9.4.1 Personal Computer......................................... ...... ....... ...... ...... ....... ........................................9-15

9.4.2 Printer ......................................... ....... ...... ....... ...... ..................................................................9-17

10. FX2N-232IF..........................................................................................10-1

10.1 Introduction........................................................................................................10-1

10.1.1 Outline of Product.................................................................................................................10-1

10.2 Allocation of Buffer Memories (BFM’s) ..............................................................10-2

10.2.1 BFM List ................................... ....... ...... ....... ...... ....... ...... ...... ....... ...... ....... ...... .....................10-2

10.2.2 Communication Format <BFM#0> .......................................................................................10-4

10.2.3 Command

〈

BFM #1

〉 .................................................................................................. 10−8

10.2.4 Receive Upper Limit Byte Count 〈BFM #2

〉 ................................................................... 10−9

10.2.5 Receive Time-out Time <BFM #3>.......................................................................................10-9

10.2.6 Send Header <BFM #5 (upper), BFM #4 (lower)>................................................................10-9

10.2.7 Send Terminator <BFM #7 (upper), BFM #6 (lower)> ..........................................................10-9

10.2.8 Receive Header <BFM #9 (upper), BFM #8 (lower)>.........................................................10-10

10.2.9 Receive Terminator <BFM #11 (upper), BFM #10 (lower)>................................................10-10

10.2.10 Receive Suspension Waiting Time <BFM #12> ...............................................................10-10

10.2.11 Number of Remaining Send Data <BFM #13> .................................................................10-11

10.2.12 Number of Receive Buffers <BFM #14>........................ ...... ....... ...... ....... ...... ....... ...... ...... 10-11

FX communication

xii

10.2.13 Send Sum Result <BFM #15>..........................................................................................10-11

10.2.14 Receive Sum Result <BFM #16>......................................................................................10-11

10.2.15 Time from CS ON to Send Start <BFM #20>....................................................................10-12

10.2.16 Time from Completion of Actual Send to RS OFF (completion flag ON) <BFM #21> ......10-12

10.2.17 Status <BFM #28> ...........................................................................................................10-13

10.2.18 Error Code <BFM #29>.....................................................................................................10-14

10.2.19 Model Code <BFM #30>...................................................................................................10-14

10.2.20 Send Byte Count <BFM #1000>....................................................................................... 10-14

10.2.21 Send Buffers <BFMs #1001 to #1256>.............................................................................10-14

10.2.22 Receive Byte Count <BFM #2000> ..................................................................................10-15

10.2.23 Receive Buffers <BFM #2001 to #2256>................................................. ...... ....... ...... ...... 10-15

10.2.24 Spare Receive Buffers for Interlink Connection Mode <BFM #2257 to #2271> ...............10-15

10.3 Hardware Hand Shake Operation....................................................................10-16

10.3.1 No Hardware Hand Shake..................................................................................................10-16

10.3.2 Standard RS-232C Mode....................................................................................................10-17

10.3.3 Interlink Mode .................................. ...... ....... ...... ....... .............................................. ...........10-18

10.4 Example Program............................................................................................10-19

10.4.1 Example of 16 Bits Data Communication ...........................................................................10-19

10.4.2 Example of 8 Bits Data Communication .......................... ...... ....... ...... ................................10-23

11. Optional Pr o g r amming Port..... ............................................................11-1

11.1 FX2N-422-BD, FX1N-422-BD............................................................................11-1

11.2 FX2N-232-BD FX1N-232-BD FX0N-232ADP and FX2NC-232ADP .................11-2

11.2.1 Connection cables ........................... ...... ....... ...... ....... ...... .....................................................11-2

11.3 Cautions on Use................................................................................................11-3

11.3.1 Cautions on Setting...............................................................................................................11-3

11.3.2 Cautions on use ................................................................................................................... 11-3

12. Diagnostics.................. .. .................... ................... ................... .. ..........12-1

12.1 Common Items..................................................................................................12-1

12.2 N:N Network ......................................................................................................12-2

12.2.1 Error Code ............................................. ....... ...... ....... ...... ...... ....... ...... ..................................12-2

12.2.2 Diagnostics ............................................................................ ....... ........................................12-2

12.3 Parallel Link.......................................................................................................12-3

12.3.1 Diagnostics ............................................................................ ....... ........................................12-3

12.4 Computer Link ...................................................................................................12-4

12.4.1 NAK Error Code....................................................................................................................12-4

12.4.2 Programmable Controller Error Code ...................................................................................12-4

12.4.3 Diagnostics ............................................................................ ....... ........................................12-5

12.5 RS Instruction....................................................................................................12-6

12.5.1 Diagnostics ............................................................................ ....... ........................................12-6

12.6 FX2N-232IF ........................................................................................................12-7

12.6.1 Error code.................... ....... ...... ....... ...... ....... ...... ....... ...... ...... ....... ........................................12-7

12.6.2 Diagnostics ............................................................................ ....... ........................................12-7

12.7 Using Optional Programming Port.....................................................................12-8

12.7.1 FX1S, FX1N and FX

2N(C)

earlier V2.00.......... ...... ....... ...... ...... ....... ...... ....... ...........................12-8

12.7.2 FX

, FX

2NC

whose version is V 2.00 or later......................................................................12-8

Appendix A:

ASCII code Lists................................................................................................... A-1

FX communication

Introduction 1

1-1

1. Introduction

1.1 Abbreviations, Generi c Names and Terms Used in This Manual

Abbreviation List

This manual describes the following product in the new name.

Abbreviation/generic name/term Description

CPU

Series Generic name of FX1S Series main units

Series Generic name of FX0N Series main units

Series Generic name of FX1N Series main units FX Series Generic name of FX Series main units FX

Series Generic name of FX2 Series main units

Series Generic name of FX2N Series main units FX

Series Generic name of FX2C Series main units FX

2NC

Series Generic name of FX

2NC

Series main units

FXCPU

Generic name of FX

/FX0S/FX1S/FX0N/FX1N/FX1/FX/FX2/FX2N/FX2C/

2NC

Series main units

Others

FX/WIN Abbreviation of programming software FX-PCS/WIN-E for FX Series PLC Windows95 Abbreviation of Microsoft Windows95 Windows98 Abbreviation of Microsoft Windows98 Windows NT4.0 Abbreviation of Microsoft Windows NT Workstation 4.0 Windows 2000 Abbreviation of Microsoft Windows 2000 Professional

Windows

Generic name of Windows95, Windows98, Windows NT4.0 and Windows2000

Personal computer (PC)

Personal computer compatible with Windows to which GX Developer or FXPCS/WIN-E is installed

Conventional name New name Remarks

GPPW GX Developer Abbreviation of software package SW"D5C-GPPW-E

FX communication

Introduction 1

1-2

1.2 Communication Types

The FX Series supports the following 5 types of communication. 1 ) N:N network

Data transfer with FX

, FX

2NC

, FX1N, FX1S, FX0N programmable controllers can be performed on a N:N basis. They can link data of a small-scale system if using this network. For the system configuration please refer to subsection 1.2.1, specifications refer to chapter 3, wiring refer to chapter 2, settings and the number of transferred data and example program refer to chapter 4,diagnostics refer to chapter 12.

2 ) Parallel link

Data transfer with FX

, FX

2NC

, FX1N, FX and FX2C programmable controllers can be

performed on a 1:1 bas is for 100 auxiliar y relays and 10 data reg isters. With the FX

and

data transfer is performed for 50 auxiliary relays and 10 data registers. For the system configuration please refer to subsection 1.2.2, specifications refer to chapter 3, wiring refer to chapter 2, setting and example program refer to chapter 5, diagnostics refer to chapter 12.

3 ) Computer link (Data transfer using dedicated protocol)

Data transfer with RS-485 (RS-422) units can be performed on a 1:n (16) basis using dedicated protocol. For the system configuration please refer to subsection 1.2.3, specifications refer to chapter 3, wiring refer to chapter 2, setting of communication format refer to chapter 6, dedicated protocol refer to chapter 7 & 8, diagnostics refer to chapter 12.

4 ) No protocol communication (Data transfer using RS instruction)

Data communication with a diversified RS-232C unit including personal computers, bar code readers and printers can be performed using no protocol communications. This communication uses RS instruction’s or an FX

-232IF special function block. For the system configuration please refer to subsection 1.2.3, specifications refer to chapter 3, wiring refer to chapter 2, setting of communication format, RS ins truction and example program refer to chapter 6 and 9, diagnostics refer to chapter 12. When using the RS ins tructio n, for setting the communicatio n format refer to chapter 6, for the RS instruction and example program please refer to chapter 9. Or when using an FX

232IF, for setting and example progr am please refer to chapter 10.

5 ) Optional programming port

The port can support programming protocol, if connected to an FX

-232-BD, FX0N-232ADP,

2NC

-232ADP, FX1N-232-BD, FX2N-422-BD and FX1N-422-BD for the FX2N, FX

2NC

, FX1N,

Series programmable controller.

For notes on use, refer to chapter 11, diagnostics refer to chapter 12.

FX communication

Introduction 1

1-3

1.3 System Configuration

For programming protocol refer to chapter 11.

1.3.1 N:N Network

1.3.2 Parallel Link

1 ) FX

, FX

2NC

(Shielded twisted-pair cable)

Note:

*1 When including an FX

-485-BD in the system confi gur at ion, thai s , total extension distance

has a max of 50m (164' 0").

FX Series PLC Interface

, FX

2NC

FX0N-485ADP FX

2NC

-485ADP

, FX

FX1N-CNV-BD + FX0N-485ADP FX

-CNV-BD + FX

2NC

-485ADP

-485-BD

FX2N-CNV-BD + FX0N-485ADP FX

-CNV-BD + FX

2NC

-485ADP

-485-BD

####, $$$$

Using interface Extension distance

FX2N-485-BD Max. 50m (164' 0") FX

-CNV-BD + FX0N-485ADP

Max. 500m (1640' 5")

FX2N-CNV-BD + FX

2NC

-485ADP

2NC

FX0N-485ADP FX

2NC

-485ADP

RS-485

communication

equipment

RS-485

communication

equipment

RS-485

communication

equipment

RS-485

communication

equipment

RS-485

communication

equipment

FX PLC FX PLC FX PLC FX PLC FX PLC

Up to eight FX series programmable controllers can be connected. The total extension distance is 500m(1640' 5") when only the FX

-485ADP and FX

2NC

-485ADP

are used in the configuration, and 50m(164' 0") when the FX1N-485-BD and FX2N-485-BD are used.

① ②

FX communication

Introduction 1

1-4

2 ) FX1N (Shielded twisted-pair cabl e)

*2 When including an FX

-485-BD in the system configuration, thais, total extension distanc e

has a max of 50m

(164' 0")

3 ) FX

(Shielded twisted-pair cable)

*3 When including an FX

-485-BD in the system configuration, thais, total extension distanc e

has a max of 50m

(164' 0")

4 ) FX

(Shielded twisted-pair cabl e)

5 ) FX, FX

(Shielded twisted-pair cable and glassfiber cable)

Note;

Parallel link is only possible between the same series of PLC’s, or between other series in th e same group. However, parallel link between each group cannot be achieved. Group’s are separated as follows.

####, $$$$

Using interface Extension distance

FX1N-485-BD Max. 50m (164' 0") FX

-CNV-BD + FX0N-485ADP Max. 500m (1640' 5")

FX1N-CNV-BD + FX

2NC

-485ADP

####, $$$$

Using interface Extension distance

FX1N-485-BD Max. 50m (164' 0") FX

-CNV-BD + FX0N-485ADP Max. 500m (1640' 5")

FX1N-CNV-BD + FX

2NC

-485ADP

####, $$$$

Using interface Extension distance

FX0N-485ADP

Max. 500m (1640' 5")

2NC

-485ADP

####, $$$$

Using interface Extension distance

, FX

FX2-40AW (Shielded twisted-pair cable) Max. 10m (32' 9") FX

-40AP (Glassfiber cable) Max. 50m (164' 0")

Group No. Series

Group 1 FX

, FX

2NC

Group 2 FX

Group 3 FX

Group 4 FX

Group 5 FX, FX

FX communication

Introduction 1

1-5

1.3.3 Computer Link

1 ) In the case of 1:N connection using RS-485 (RS-422)

2 ) In the case of 1:1 connection using RS-232C

Up to sixteen FX series programmable controllers can be connected. The total extension distance is 500m(1640' 5") when only the FX0N-485ADP and FX

2NC

-485ADP are used

in the configuration, and 50m(164' 0") when the FX1N-485-BD and FX2N-485-BD are used.

FX0N,FX

2NC

FX2N + FX2N-CNV-BD, FX

+ FX1N-CNV-BD,

+ FX1N-CNV-BD

2NC

-485ADP,

FX0N-485ADP

FX2, FX

FX-485ADP

A series PLC + A

(1S)

J71UC24

+ FX2N-485-BD,

+ FX1N-485-BD,

+ FX1N-485-BD

Computer

RS-232C

FX-485PC-IF

RS-485(RS-422)

Total extension distance is 15m(49' 2").

Computer

2NC

,FX

FX1N,FX

FX2,FX

:FX2N-232-BD FX2N-CNV-BD+FX0N-232ADP FX2N-CNV-BD+FX

2NC

-232ADP

:FX

-232ADP

2NC

-232ADP :FX1N-232-BD, FX1N-CNV-BD+FX0N-232ADP FX1N-CNV-BD+FX

2NC

-232ADP

:FX-232ADP

FX communication

Introduction 1

1-6

1.3.4 No Protocol Communication

*1 The RS-485/RS-232C signal co nvertor is necessary in the case of an R S-485 interface for a

computer connection.

*2 When using an FX

-485-BD a FX2N-485-BD in a s ystem the total extension distance has a max of 50m(164' 0"). But, RS-485/RS-232C signal convertor is necessary in the case of an RS-232C interface for a computer connection.

*3 This system configuration can achieve full-duplex or half-duplex communication. *4 This system configuration can only achieve half-duplex communication.

1.4 Supported Functio n s and Applicable Versions

Items

2NC

FX1N, FX

FX, FX

N:N network

All versions

V2.00 or more No support Parallel link All versions All versions Computer link V1.20 or more V3.30 or more

No protocol communication

Use RS instruction All versions V3.00 or more Use FX

-232IF Not supported.

FX2N-CNV-BD

FX, FX

FX2N-232-BD

FX0N-232ADP,FX

2NC

-232ADP

RS-232C

FX2N + FX2N-CNV-BD FX1N + FX1N-CNV-BD FX1S + FX1N-CNV-BD FX0N, FX

2NC

FX2N + FX2N-485-BD

FX-232ADP

FX0N-485ADP,FX

2NC

-485ADP

Max 15m(49' 2") *1

Max 500m (1640' 5") *2

FX1N + FX1N-CNV-BD FX1S + FX1N-CNV-BD

FX0N-232ADP,FX

2NC

-232ADP

*4 *3

Personal computer

Bar code reader

Printer

2NC

FX0N-232ADP,FX

2NC

-232ADP

FX1N + FX1N-485-BD FX1S + FX1N-485-BD

% %

+ FX1N-232-BD FX1S + FX1N-232-BD

% % % %

% %

FX2N, FX

2NC

+ FX

2NC

-CNV-IF

FX2N-232IF

RS-485(RS-422)

FX communication

Specifications 2

2-1

2. Specifications

2.1 Communication Specification

*1 FX2N, FX

2NC

, FX1N, FX1S and FX0N PLCs are supported.

*2 When using an FX

-485ADP or FX

2NC

-485ADP, this system is only half-duplex.

N:N network Parallel lin k

Computer

link

(dedicated

protocol)

No protocol commu nica tion

Transmission standard

Conforming to

RS-485

Conforming to RS-485

and RS-422

Conforming to RS-485 and RS-422 or

RS-232C

Transmission distance Max. 500m

RS-485(RS-422): Max. 500m(1640' 5") RS-232C: Max. 15m (49' 2")

Number of stations Max. 8 stations 1:1

1:N

(N is Max. 16

stations

RS-232C:1:1 RS-485:1:N

Communication method Half-duplex comm un ic ati on

FX, FX2C, FX0N, FX1N, FX1S: half-duplex communication

FX2N, FX

2NC

: full-duplex

communication

Data length

Fixed

7 bit / 8 bit

Parity None / Odd / Even

Stop bit 1 bit / 2bit

Baud rate (bps) 38,400 19,200 300/600/1,200/2,400/4,800/9,600/19,200

Header character

Fixed

None / effective

Terminator character

Control line



Protocol



Format 1 /

Format 4

None

Sum check Fixed

None /

effective

Supported programmab le

controller

, FX

2NC

, FX1S, FX

FX2N, FX

2NC

, FX1N, FX1S, FX0N, FX, FX

FX communication

Specification 2

2-2

2.2 Communicatio n Ti m e

2.2.1 N:N network

Note;

If a N:N network is used, the scan time of each station programmable controller becomes about 10 percent longer regar dless of the number of link s tations or the communication device pattern used.

2.2.2 Parallel link

Communication de vice

Pattern 0

Bit device: 0 point

Word device: 4 points

Pattern 1

Bit device: 32 points

Word device: 4 points

Pattern 2

Bit device: 64 points

Word device: 8 points

Total station number

2 18 22 34 3 26 32 50 4 33 42 66 5 41 52 83 6 49 62 99 7 57 72 115 8 65 82 131

Normal Mode

70ms for reciprocation + Operation cycle of master station

+ Operation cycle of slave station (ms)

High speed mode

20ms for reciprocation + Operation cycle of master station

+ Operation cycle of slave station (ms)

FX communication

Specifications 2

2-3

2.2.3 Computer link

Calculations to determine the approximate time until communication is complete. 1 ) Programmable controller

→

Computer

Communication time = Total number of characters based on dedicated protocol

Time to send or receive one character (ms)*2

+ Programmable controller’s maximum scan time (ms)

+ Message wait (ms)

2 ) Computer

→

Programmable controller

Communication time = Number of total characters based on dedicated protocol

Time to send or receive one character (ms)*2 + Programmable controller’s maximum scan time (ms) + Message wait (ms)

Note:

*1 Please count the number of characters with ref erence section 7.4.1 and 7.4.2 and chapter 8. *2 Please refer to the following expression for time calculati on.

Time to send or receive one character = 1/baud rate

number of bits in character

(start bit(1) + Data length(7 or 8) + Parity bit(0 or 1) + Stop bit(1 or 2))

Example

When 1 character = 10 bits (Data length = 7, Parity bit = 1, stop bit = 1 start bit = 1), the time is as follows.

Note;

Please refer to following table fo r the relation between read ing word points and com munication time. “Message time = 0ms, Maximum scan time = 20ms, Dedicated protocol format = format 1, Command = WR, Baud rate = 9,600 or 19,200 bps”

Baud rate (bps) Time to send or receive one character (ms)

300 33.34

600 16.67 1200 8.34 2400 4.17 4800 2.08 9600 1.04

19200 0.52

Reading word points

Baud rate (bps)

9,600 19,200

10 0.3 s 0.2 s 32 0.4 s 0.3 s 64 0.5 s 0.4 s

FX communication

Specification 2

2-4

MEMO

FX communication

Wiring 3

3-1

3. Wiring

Terminal layout when using a communication unit, please refer to the individual units manual.

Common

1 ) This system is designed to read and write data (forced on/off) while the programmable

controller is running. If abnormal data is written to the programmable controller, due to effects of noise, the programmable controller may malfunction and cause machine trouble or a n accident. Therefore, observe the following cautions.

• Do not lay signal cables near high voltage power cables or put them in the same trunking duct. Otherwise effect s of noise or surge induction are likely to take place. Keep a safe distance of more than 100 mm (3.94") from these wires.

• Ground the shield wire or shield of a shielded cable at one poi nt on the programmable controller. Do not, however, ground at the same point as high voltage lines.

2 ) Cut off phases of power source externally, before installation or wiring work in order to avoid

electric shock or serious damage to the product.

3 ) Replace the provided terminal cover before supplying power and operating the unit after

installation or wiring work in order to avoid electric shock.

FX communication

Wiring 3

3-2

3.1 Caution on cable selection

3.1.1 FX1N-485-BD, FX2N-485-BD, FX

2NC

-485ADP

Number of cables connected to terminal and their specification

3.1.2 FX

-485ADP

3.1.3 FX

-40AW

1 ) The terminal screws for the terminal bl oc k of the FX

-40A W are M3.5 s crews, theref ore crimp style terminal (see drawing) suitable for use with these screws should be fitted to th e cable for wiring.

2 ) The ter minal tightening torque is 0.5 to 0.8 N⋅m (5 to 8 kgf⋅cm), tighten securely to avoid

malfunction.

FX1N-485-BD, FX2N-485-BD FX

2NC

-485ADP

When connecting 1 cable

AWG26-16

AWG26-16 When connecting 2 cables AWG26-20 Tightening torque 0.6N%m 0.4 to 0.5N%m

6mm(0.23")

-485-BD,FX2N-485-BD

8mm(0.32")

2NC

-485ADP

To connect the RS-485(RS-422) unit, use a shielded twist-pair cable. The cable model must be A WG 26 to 16, and the maximum tightening tor que must be 0.6 N%m (6 kgf%cm). If a cable other than the AWG 26 to 16 is used, normal communication cannot be assured as the terminal may be imperfectly contacted. It is recommended to insert a cable integrated by a crimping tool into the terminal.

For M3

6.2mm (0.24 inches) or less

For M3

1 ) The terminal screws of the FX

(0N)

-485ADP are M3 screws, therefore, crimp style terminal

(see drawing) suitable for use with these screws should be fitted to the cable for wiring.

2 ) The terminal tightening torque is 0.5 to 0.8 N⋅m (5 to 8 kgf⋅cm), tighte n securely to avoid

malfunction.

For M3.5

6.8mm (0.27 inches) or less

For M3.5

FX communication

Wiring 3

3-3

3.2 Using RS-232C Interface

Below is a typical wiring example. Please wire similar to the following pin name, when a pin number on the side of a counterpart machine differs.

3.2.1 Using RS Instruction or Computer Link

1 ) Terminal specification device

Note; When using ER and DR signals, please also chec k if RS and CS signals are needed according to the RS-232C device specifications.

2 ) Modem specification device

Note; The FX

-232ADP and FX

2NC

-232ADP does not monitor the CD pin (pin8).

3 ) Computer link

Please refer to 2.2.1 1) for wiring.

RS-232C Device Side

Signal

name

RD(RXD)

SD(TXD)

RSRTS)

SG(GND)

CS(CTS)

Uses CS, RS

2 3 7 5 8

9-pin

D-SUB

25-pin

D-SUB

1 3 2 4 7 5

Uses DR, ER

9-pin D-

SUB

25-pin

D-SUB

2 3 4 5 6

1 3 2

7 6

Signal

name

FG RD(RXD) SD(TXD) ER(DTR) SG(GND) DR(DSR)

Programmable Controller Side

Signal

name

FX0N-

232ADP

FX-

232ADP

- 1

RD(RXD)

SD(TXD)

ER(DTR) SG(GND) DR(DSR)

FX2N-232-BD FX

-232-BD

2 3 4 5 6

3 2

7 6

2NC

232ADP

Programmable Controller Side

2NC

232ADP

FX-

232ADP

- 1

RS-232C Device Side

Uses CS, RS Uses DR, ER

- 8

Signal

name

RD(RXD)

SD(TXD)

ER(DTR) SG(GND) DR(DSR)

CD(DCD)

FX2N-232-BD FX

-232-BD

FX0N-

232ADP

3 2

7 6

Signal

name

RD(RXD)

SD(TXD) RS(RTS)

SG(GND)

CS(CTS)

CD(DCD)

2 3 7 5 8

9-pin

D-SUB

25-pin

D-SUB

3 2 4 7 5

Signal

name

RD(RXD) SD(TXD) ER(DTR) SG(GND) DR(DSR)

9-pin

D-SUB

2 3 4 5 6

25-pin

D-SUB

3 2

7 6

8 2 3 4 5 6

FX communication

Wiring 3

3-4

3.2.2 Using FX2N-232IF

The signal wiring o f the RS-232C equipmen t varies depending on the RS-232C connection specifications. Check the specifications of the RS-232C equipment used, then connect the signals correctly. Representative wiring examples are shown below.

1 ) Terminal specification device (No control line)

Setting communication format (BFM #0); b9=0, b8=0

Communication is performed in accordance with the condition determined by the software in the FX

-232IF and the

counterpart equipment.

2 ) Terminal specification device (Use control line)

a ) Standard RS-232C mode (Use cross cable)

Setting communication format (BFM #0); b9=0, b8=1

As the carrier to send (CS) signal pin of the FX

-232IF itself receives the request to send (RS) signal, signal tr ansfer is performed as if the counterpart equipment is functioning.

Note:

*1 When the CD signal is not monitored, the CD signal pin is not required to be connected.

With regard to the CD signal, the FX

-232IF only indicates the status.

*2 The FX

-232IF only indicates the status.

Programm able Controller Side

Signal

name

RD (RXD)

SD (TXD)

SG (GND)

FX2N-232IF

RS-232C D evice Side

Signal

name

RD (RXD)

SD (TXD)

SG (GND)

9-pin

D-SUB

25-pin

D-SUB

Programm able Controller Side

Signal

name

RD (RXD)

SD (TXD)

RS (RTS)

FX2N-232IF

RS-232C D evice Side

Signal

name

9-pin

D-SUB

25-pin

D-SUB

CD (DCD)

CS (CTS)

ER (DTR)

20 6 5

6 7

DR (DTR)

SG (GND)

6 5

RD (RXD)

SD (TXD)

RS (RTS)

CD (DCD)

CS (CTS)

ER (DTR) DR (DTR) SG (GND)

*1 *1

*2 *2

FX communication

Wiring 3

3-5

b ) Interlink connection mode (Use interlink serial cross cable)

Setting connection format (BFM #0); b9=1, b8=1

In the interlink connection mode, data exceeding 512 bytes (upper limit of the receive buff er in the FX

-232IF) can be

received.

Note:

*1 The FX

-232IF only indicates the status.

*2 In this mode, the request to send (RS) signal func tions as the signal to enable receive in

the FX

-232IF.

When receiving data exceeding 512 bytes, the FX

-232IF sets the request to send (RS) signal to “OFF” and requests the counterpart equipment to suspend the send operation. When the data saved in the receive buffers is read by the sequence program, the remaining data can be receiv ed.

3 ) Modem specification device

Standard RS-232C mode (Using straight cable) Setting communication format (BFM #0); b9=0, b8=1

Note:

*1 The FX

-232IF indicates the status exclusively.

*2 When the CD signal is not monitored, the CD signal pin is not required to be connected.

With regard to the CD signal, the FX

-232IF indicates the status exclusively.

*3 When the CI signal is not required, the CI signal pi n is not required to the connected. With

regard to the CI signal, the FX

-232IF indicates the status exclusively.

Programm able Controller Side

Signal

name

RD (RXD)

SD (TXD)

RS (RTS)

FX2N-232IF

RS-232C D evice Side

Signal

name

9-pin

D-SUB

25-pin

D-SUB

4 CS (CTS) ER (DTR)

8 4

20 6 5

6 7

DR (DTR)

SG (GND)

6 5

RD (RXD)

SD (TXD)

RS (RTS) CS (CTS)

ER (DTR) DR (DTR) SG (GND)

*1 *1

*2 *2

Programm able Controller Side

Signal

name

RD (RXD)

SD (TXD)

RS (RTS)

FX2N-232IF

RS-232C D evice Side

Signal

name

9-pin

D-SUB

25-pin

D-SUB

CD (DCD)

CS (CTS)

ER (DTR)

20 6 5

6 7

DR (DTR)

SG (GND)

6 5

RD (RXD)

SD (TXD)

RS (RTS)

CD (DCD)

CS (CTS)

ER (DTR) DR (DTR) SG (GND)

*1 *1

*2 *2

9 22C I (R I) 9 CI (RI)

*3 *3

FX communication

Wiring 3

3-6

3.3 Using RS-485 Interface

3.3.1 Wiring Selection

The wiring of RS-485 can either be one-pair or two-pair. The wiring method is decided according to application usage. Please select the wiring method from the table below.

…

Recommendation,

…

OK, ×…Cannot use

Note:

*1 When this product is added to the system, please match the wir ing to the existing method of

the system.

*2 When using an FX

-485-BD with this wiring method, remember to take account of/or ignore

the “echo” of the commands sent from the FX

programmable contr oller.

*3 Please use the FX

programmable cont roller and FX2N-485-BD together.

Full-duplex combination cannot be achieved with other configurations.

*4 For wiring parallel link, see section 2.4.

3.3.2 T erminal Resistor

A terminal resistor must be used at both ends of the communication line as described in section

2.3.3 and 2.3.4.

Usage One-pair wiring Two-pair wiring

No protocol (Use RS instruction) *1

Half-duplex communication

Full-duplex communication *3

Dedicated protocol (Use computer link)*1

It is necessary to set the message wait time to 70 ms or less.

It is not necessary to set the massage wait time to 70 ms or less.

Use the on-demand function

Parallel link *4

N:N network

Orange Orange Brown

Brown Brown Brown

330

Ω

1/4 W

110

Ω

1/2 W

1 )In the case of two-pair wiring, connect the terminal resistor

(330

Ω

, 1/4W) between terminals SDA and SDB and between terminals RDA and RDB. Use the resistors offered as accessories with the product.

2 )In the case of one-pair wiring, connect the terminal resistor

(110

Ω

, 1/2W) between terminals RDA and RDB. Use the

resistors offered as accessories with the product.

+ 132 hidden pages

Mitsubishi Electric MELSEC FX, RS-232C, RS-422, RS-485 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual