For Detail information, Please User Manual
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1. After the switch setting is write to PLC please reset the PLC to make the setting effective The PLC Ladder Logic supposes the QJ71C24 R2 is in the first slot slot 0 if the module is not in slot 0 some instruction of the Ladder Logic need to be modified see the Ladder Logic description for detail Prepared by Cai Huilong 2003 05 6 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 3 2 2 A1SJ71QC24 N R2 The setting of A1SJ71QC24 A1SJ71QC24N A1SJ71QC24 R2 is through the DIP switch on the module see following table Baud rate SW9 SW10 SW11 SW12 Bit OFFO ON 1 300 OFF OFF OFF OFF SW1 IND LINK 600 ON OFF OFF OFF SW2 Data Bit 7 8 1200 OFF ON OFF OFF SW3 Parity Bit NO YES 2400 ON ON OFF OFF SW4 Odd Even ODD EVEN 4800 OFF OFF ON OFF SW5 Stop Bit 1 2 9600 ON OFF ON OFF SW6 Sum Check NO YES 19200 OFF OFF OFF OFF SW7 w during run NO XES 38400 OFF ON ON OFF SW8 Editable NO YES 14400 ON ON ON OFF 28800 ON OFF OFF ON 57600 OFF ON OFF ON MODE 6 115200 ON ON OFF ON The blue color is the default value 9600 N 8 1 The mode of the channel selected for Modbus master should be set to 06 For detail setting information please refer A1SJ71QC24 AJ71QC24 Serial Communication Module User s Manual and GX Developer operating manual After the switch setting changed please reset the PLC to make the setting effective The PLC Ladder Logic suppose2. the A1SJ71QC24 N R2 is in the first slot slot 0 if the module is not in slot 0 some instruction of the Ladder Logic need to be modified see the Ladder Logic description for detail Prepared by Cai Huilong 2003 05 7 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 3 3 Define the Communication Parameter The parameter setting program MBSETXXX EXE XXX USB CPU COM is used to defined necessary parameter and communication task for the MODBUS communication The software is easy to use See following screen shot ia MODBUS Paramater Setting For Melsec Q Series PLC MODBUS Parameter Setting For MELSEC Q PLC USB F1234 Options About Task Number 4 1 1 Auto Setting CMD Start Address 09000 Generate Commands Receive Address 2171024 Head Address 0 Receive Head Address Write to PLC G171C24 Channel No 1 001000 Auto Calculate New Para Load Data Jal Exi xit ID Station FCODE StartAddress Number Destination Detail Mode n 48 000000 Ea 1 000003 E 000011 Abolute Address Relative Address Convert Task Interval 10 x100ms Function Code Function Description Relative Address Absolute Address 1 Read Coils 0 65535 00001 65535 2 Read Input Discrete 0 65535 10001 165535 z Read Halding Registers 0 65535 40001 465535 4 Read Input Registers 0 65535 30001 365535
3. unhide the supported function code description in the bottom of the window Address Convert Since in the task the program use relative address while in MODBUS device Absolute address is used so this option can help to convert the Modbus Absolute address to relative address For example if you fill the address 40010 click the calculate you will get the relative address 9 Task Interval The interval to poll the Modbus slave data The unit is 100 ms Default value is 10 It means the polling interval is 1 second The usage of MBSETCPU EXE and MBSETCOM EXE is the same as described above expect that MBSETCPU EXE and MBSETCOM EXE add the selecting of Com port parameter used in computer The usage of MBSETXXX EXE need a valid license file otherwise some function of the program will be disabled Tips 1 In order to increase the communication refresh rate don t define too much tasks 2 Ifthe read numbers is too long please increase the communication interval 3 The bit data read from Modbus slave station also saved in PLC data registers One data register can save 16 bits If you read 10001 to 10016 and the destination is DO the 00 0 is 10001 00 1 is 10002 00 15 is 100016 Prepared by Cai Huilong 2003 05 10 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 3 4 PLC Parameter setting and Ladder Logic Description 3 4 1 Polling Ladder Logic The polling ladder logic program name is called MODBUS You can use followin
4. MELSEC Q PLC MODBUS MASTER PROGRAM USER GUIDE May 14 2003 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 CONTENTS 1 GENERAL DESCRIPTION naciste 3 2 9PEOIFIOATIONS cat oi 4 PROCEDURE TO BUILD UP THE COMMUNICATION 5 3 1 Setting la alana 5 3 2 Communication Module Setting eene 6 ASOCIAN 7 3 3 Define the Communication 1 8 3 4 PLC Parameter setting Ladder Logic Description 11 341 Polling Ladder LOLI Ciotoi i ORE RED LAR 11 3 4 2 Write Data to Modbus Slave Ladder Logic eee 12 4 APPENDIX a Er Dd 15 Prepared by Cai Huilong 2003 05 2 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 1 GENERAL DESCRIPTION Melsec Q Series PLC Modbus Master program makes it possible that Mitsubishi QnA QnAS and Q series PLC can act as a Modbus master to communicate with Modbus slave device in RTU mode In order to be the master a communication module QJ71C24 or QJ71C24 R2 is needed when the PLC is series while module A1SJ71QC24N A1SJ71QC24 AJ71QC24N or A1SJ71QC24 R2 etc is needed The program consists of two parts One is the PLC ladder logic program another is parameter setting program Windows Application The two software should work toget
5. TER USER GUIDE 1 1 The Following devices have been used in MBWRT program please don t use in your program 72000 T2003 20 21 22 23 24 25 010000 to 010499 M8000 M8140 If the communication module is not in slot 0 following instruction need to be changed Original Instruction New Instruction G OUTPUT UO D10200 D10110 M8113 G OUTPUT UX D10200 D10110 M8113 G INPUT UO D10203 D10120 M8114 G INPUT UX D10203 D10120 M8114 X3 CH1 XA CH2 XX3 CH1 XXA CH2 The X is the module head address for example if the module address starts from 100H to 11FH then X 10 Examples MO ot OV Ki D10100 OV K5 D10101 OV Hi D10102 OV HOFFOO D10103 SET 8120 Above code set Modbus slave 1 coil 00002 to 1 Prepared by Cai Huilong 2003 05 13 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 MO of OV OY K5 OY H1 OY H1111 SET Above code write data 4369 H1111 to slave 1 register 40002 Hz ea M 10 hv m NW EZ Int 18 SET ESI D10100 D10101 D10102 D10103 M8120 Diodon Diglul 010103 DIA D10302 5120 Az Above code write data in D10301 and D10302 to slave 1 register 40001 and 40002 2 words Prepared by Cai Huilong 2003 05 14 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 4 APPENDIX If you have any problem or suggestion when you use Modbus Master program for Mitsubishi QnAS and Q series PLC please do not hesitate to contac
6. The title of the software indicates the communication mode between the software and the PLC in the graphic it s USB To use the software see following procedure Prepared by Cai Huilong 2003 05 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 VVV V Input the task number you will define Input the head address of the communication module Default 0 slot 0 Input the channel number Default 1 Click New Para button the task list will appear with its default value Modify the data in task list Click the Generate Commands button to generate the communicate parameter Click Write to PLC button to write the parameter to PLC Other function of the software lt gt After click the Generate Commands button you can save what you have defined to a file through click the Save Data button the software will pop a message box let you input a file name Please don t input the extension name You can use the Load Data button to load the parameter files you saved before and you can modify the data and save it again The 1 and 1 button beside the task number input box is used to add one or minus one task in the task list For example suppose you have defined one parameter with 4 tasks and save it to file T4 if you want to add more tasks in your application just load your saved file T4 Click the 1 button you can click many times as you need modify the new task data generate the comma
7. g way to add the program to your application Open the project MODBUS you get Reconfigure the transfer setup if needed Default is USB Change the PLC type if needed Default is QO2HCPU Write the Program MODBUS to PLC if you have the same name program rename it first Close the project and open your own project Read the MODBUS program from PLC to your own project Modify the PLC parameter of your project gt gt gt Y The MODBUS program should be set to scan v Remember to set D9000 to D9999 to Latch To Start the MODBUS Polling Please SET M8010 The Following devices have been used in MODBUS program please don t use in your program 72000 20 21 22 WO to W9F 09000 to 09999 8000 M8191 If the communication module is not in slot 0 following instruction need to be changed Original Instruction New Instruction ZP CSET UO K1 WO W3 M8100 ZP CSET UX K1 WO W3 M8100 GP OUTPUT U0 W4 WOA M8102 GP OUTPUT UX W4 WOA M8102 GINPUT UO W10 W20 M8104 G INPUT UX W10 W20 M8104 X3 CH1 XA CH2 XX3 CH1 XXA CH2 The X is the module head address for example if the module address starts from 100H to 11FH then X 10 Prepared by Cai Huilong 2003 05 11 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 3 4 2 Write Data to Modbus Slave Ladder Logic The program version 1 1 or later supports single coil or register write command and multiple registe
8. her The parameter setting program is different according to communication way between the setting program and the PLC see following Setting Interface Note Program MBSETUSB USB Interface only QO2HCPU or above Through CPU Programming port using MX Component ActiveX needed MBSETCPU SC09 for QnA QnAS or QC30R2 for Q series Through RS232 422 485 of the Can use the same port for MBSETCOM communication module Modbus master don t need MX Component ActiveX MX Component ActiveX control is a software product from Mitsubishi Electric To order the product you can contact with Mitsubishi FA products authorized dealer Shanghai Syslink Automation System Co Ltd Contact information is Web http www syslink com cn Email info syslink com cn Prepared by Cai Huilong 2003 05 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 2 SPECIFICATIONS QnA QnAS Q Series all CPU QJ71C24 QJ74C24 R2 A 1S J71QC24 N R2 4 No Item Specification Note 1 Read Coil 00001 65535 2 Read Input Discrete 10001 165535 1 Function code 3 Read Holding Register 40001 465535 Supported 4 Read Analog Input 30001 365535 5 Write Single Coil 00001 65536 6 Write Single Register 40001 465535 16 Write Multiple Register 40001 465535 Max 48 words per task 2 Task Numbers Max 90 01 Max 512 Bits The points should be the 3 Points can be read 02 Max 512 B
9. its times of 16 In one task 03 Max 100 Words 04 Max 100 Words 16 Max 48 Words 4 Modbus Protocol RTU 5 Communication Baud rate from 300 to 115200 Default 9600 Parameter Data bits 8 Stop Bit 1 Parity bit 1 or none Default N 8 1 6 Interface RS232 R422 RS485 QJ71C24 QJ71C24 R2 MELSEC Q 7 Module PLC AJ71QC24 N AJ71QC24 N R2 QnA Supported AJ71QC24 N R4 A1SJ71QC24 N A18J71QC24 N R2 QnAS MBSETUSB EXE USB Interface MX Component Q02HCPU or Above ActiveX Parameter MBSETCPU EXE CPU Programming Port Needed 8 Setting QnA QnAS Q Series all CPU Program MBSETCOM EXE Communication Module Don t need MX Component Available soon Prepared by Cai Huilong 2003 05 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 3 PROCEDURE TO BUILD UP THE COMMUNICATION 3 1 Setting Procedure Install the Communication Module Slot O Suggested otherwise PLC logic should be changed Connecting the PLC and the PC using suitable cable according to the setting program used Power on the PLC Set the communication module the switch on the module or set the switch using GX Developer if it s A PLC Running the parameter setting program Define the communication task and Write the data to PLC Add the MODBUS Ladder Logic to your PLC Program Set the PLC parameter Connecting all the slave station and power them on set the communication Start condition to start the communication The data from MODBUS slave stations
10. nd and write itto PLC again you will get the new data See the task list each task has six items ID the serial number of the task Station the modbus slave station number 0 to 255 Function Code Modbus protocol function code valid range from 1 to 4 For the description of supported function code see the bottom of The windows Start Address The relative address of the data to read valid range from 0 to 65535 Numbers Read numbers in onetask if digital value is read Function 1 2 The number should the integer times of 16 and can t be over 512 The Max registers can be read in one task can t be over 100 The program will automatically recalculate the value if the input value is invalid Destination The head address of PLC data register used to save the data from slave station Please be careful when you define the address yourself in case of data overlapped Better use the Auto Calculate function In the right part of the windows there are some options which can help you to simplify the parameter setting Prepared by Cai Huilong 2003 05 9 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 Auto Setting Receive Address After you defined all the task fill the receive head device for example D1000 then click the Auto Calculate button the software will automatically calculate the destination data register address for you and fill them in your defined task list automatically Detail Mode To hide or
11. r write command The Write Data Ladder Logic consists of two PLC program one is CRC16 which is used to calculate the CRC code another is MBWRT The way to add the two program to your project is the same as that of MODBUS program Do not forget to add the two program to PLC parameter Program and set the program type as following Program Name Type CRC16 Standby MBWRT SCAN To write data to Modbus slave just move Station number Function Code Device Value to following device then SET M8120 Set once write once Item PLC Device Description Station Number D10100 0 255 5 Write Single Coil Function Code D10101 6 Write Single Register 16 Write Multiple Register See next Table When Function code 5 Device D10102 Range 0000 FFFFH Absolute Address 00001 65535 When Function Code 6 Range 0000 FFFFH Absolute Address 40001 465535 When Function Code 5 0 0000H Value D10103 1 FFOOH When Function Code 6 The value of D10103 will be written to slave When Function Code 16 the value has no meaning When D10101 16 Write multiple register Data Description Data Description Register Register D10300 Number of data to Write D10400 D10301 Data1 D10401 Write multiple D10302 Data2 D10402 Command D10348 Data48 max 48 points each time D10499 Prepared by Cai Huilong 2003 05 12 MELSEC Q PLC MODBUS MAS
12. t us Following is the contact information Allen Email allenOsyslink com cn Phone 86 21 51096030 13301658340 Alert The telephone number maybe changed always visit htip www syslink com cn for newest information Prepared by Cai Huilong 2003 05 15
13. will be transferred to PLC data registers according to the defined communication task Prepared by Cai Huilong 2003 05 MELSEC Q PLC MODBUS MASTER USER GUIDE 1 1 3 2 Communication Module Setting 3 2 1 QJ71C24 QJ71C24 R2 Since there is no hardware switch on Q series RS232 422 485 communication module all the setting is through GX Developer To start the setting follow the procedure GX Developer PLC Parameter l O Assignment setting Switch setting Switch number Description Switch 1 b15 b08 CH1 Baud rate b07 b00 CH1 transmission setting Switch 2 CH1 Protocol Switch 3 b15 b08 CH2 Baud rate b07 b00 CH2 transmission setting Switch 4 CH2 Protocol Switch 5 Station Number Baud rate 615 608 Baud rate 615 b08 Bit OFFO ON1 50 OFH 19200 07H BO IND LINK 300 00H 28800 08H B1 Data Bit 7 8 600 01H 38400 09H B2 Parity Bit NO YES 1200 02H 57600 OAH B3 Odd Even ODD EVEN 2400 03H 115200 OBH B4 Stop Bit 1 2 4800 04H B5 Sum Check NO YES 9600 05H B6 w during run NO YES 14400 06H B7 Editable NO YES The blue color is the default value 9600 N 8 1 SW1 SW3 05C2H or 05F2H The protocol of the channel selected for Modbus master should be set to 06H For detail setting information please refer Q Corresponding Serial Communication Module User s Manual Basic and GX Developer operating manual
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