QJ71E71 MODBUS TCP

[morje_datta 0]

Hi, I am new to these forum. Currently i'm facing issue for MODBUS TCP communication. 

Please go through below details for more understanding.

 

Current Architecture.

Rack Q38B

Mounted Modules on Rack

1. Power Supply Q61P

2. PLC Q06UDVCPU  (IP Address : 192.168.3.39)

3. Ethernet Card QJ71E71-100 (IP Address : 192.168.3.115)

4. Digital Input Card QX41

5. Digital Output Card QY41P

6. Analog Card Q64AD2DA

 

Above Mention PLC is connected to desktop(IP Address: 192.168.3.111) via switch. my goal is to achieved the continuous Modbus TCP communication using predefined protocol.

Currently we have added ladder for predefined protocol. Ladder program compile without error and loaded to PLC.

But when we run the system it only connected the specified port. It does not activate the port for predefined protocol nor execute further flag. For more detail i have attached our code file, predefined protocol file 

 

Please reply back as early as possible.

SAMPLE.gxw

mb31_3.epc

[Gambit 324]

I think this is the problem, Doesn't look like the GP.ECPRTCL is ever executed.

You have M100 only als a puls and a timer which will than never reach 5 sec

 

Edited 1 Apr 2022 by Gambit

[morje_datta 0]

If i remove the Timer and put normal pulse, it does get activated but my connection getting close before it write action completing with error code at ethernet diagnostics C431   

[GreenMan 18]

Try this

Set M100 and hold it until M200 is on. Use M200 to reset M100.

[AlexeyKrylov 0]

QJ71E71 MODBUS TCP

Hello friend . I have solution PLC Mitsubishi (QJ71E71-100) with Siemens S-7 1200 via Modbus TCP .

Mitsubishi PLC (Client MB_TCP)  Siemens (SERVER_MB_TCP)

It will help you .

Good luck !)

 

Train_PLC_ver5.gxw

ModbusTCP.xlsx

Modbus_EthernetModuleParam.epc

Project1_Siemens.7z

Edited 18 Apr 2022 by AlexeyKrylov