Omron TCP/IP

 Hi Kar Hei Lau ,

I suggest that you download a copy of Modbus Tester from Schneider Electric website - https://www.se.com/au/en/faqs/FA180037/ (how-to video is also available on this website. the tool is very easy to use), and use this tool to confirm that the configured PLC supports Modbus TCP/IP. If the test result is positive, it could be misconfiguration in your OI server.

Hope this would help.

Regards,

Jacky

Does the application same functionality as modscan32?

It should be possible to use the OMRON driver directly with FINS.

Would that be a viable solution?

No, I been notified by the OMRON PLC programmer that he is not using any FINS configuration inside this programming settings. These are the configuration that the programmer passed to me. I tried on OMRONFINS driver but failed to read the values too. He telling me is he already converted the communication into Modbus TCP/IP by the OMRON PLC block itself.

So far I have been tested successfully to read the values is via modscan32. So it's kind of proven that the established communication is Modbus TCP/IP but I have no idea which is the exact Modbus driver and settings I need to configure for.....

OMRON CJ2M CPU

CJ1W-ETN21

Both of them are used for testing connectivity with the devices of Modbus protocol. I am not an expert of using OI drivers. But I did test OI PCS Plugin with MBTCP driver talking to ModSim devices.

Here is the workflow of configuring MBTCP driver talking to ModSim and hope it would help you.

• Launch Operations Control Management Console (type in aaSMC from Windows Start Menu)

• Locate Modicon - MBTCP and then right mouse click on node Port and select Add ModbusBridge Connection, as shown below
  
  
• Give the connection a name and fill in the network address and port number as shown below, and then click on Save on the top-right menu.
  
  
• Right-mouse click on the newly created connection and select Add ModiconMicro Connection as shown
  
  
• In the parameters tab, give PLC Unit Id as shown below, the same as defined in ModSim32
  
  
• In Device Groups tab, right-mouse click on grid and add a group with Interval = 1000 ms. Save the changes
  
  

• Start MBTCP service.

• Here is the test result
  

If you are still unable to get the communication going with your OMRON PLC, you should contact Technical Support for further troubleshooting.

Regards,

Jacky

Thanks Jacky for you guide, I manage to solve the problem.
I found out that the PLC only accepting one connection at a time only. If I running another scanner like modscan and Modbus Tester it will block my connection from SMC that try to connect to which I keep failing to connect. Once I disconnect the scanner connection and let SMC to connect, it works well and need to fine tune some settings inside the driver.

Thank you for your feedback and glad that you have resolved the issue.