Giolee23 (Customer) asked a question.
I'm try to connect Arduino OPTA PLC to CM5-T7W
I'm try to connect Arduino OPTA PLC to CM5-T7W. its connect but wen i try to activate a button in the screen said, PLC001: PLC Communication Timeout. some one have any idea how to make this work or any update, compatible protocol??? thanks.
I think you best option for protocol would be the Modicon ModbusTCP. You will need to determine the byte, word, and char order. I think the OPTA is little-endian. Hope this helps.
thanks i try that today.
No works.
The Opta does not natively support any protocols, you'll have to configure a ModbusRTU or ModbusTCP Server.
These two articles will be essential for you to understand:
https://docs.arduino.cc/tutorials/opta/getting-started-with-modbus-tcp/
https://docs.arduino.cc/tutorials/opta/opta-modbus-tcp-plc-ide/
After several days of watching videos and reading information on different pages, I was finally able to connect the Opta PLC to the C‑More HMI. I’m attaching the photos of the settings I used.
In the Tag Name database, I tried all the parameters provided by the Opta PLC IDE, but none of them worked and the HMI kept showing an error. In one of the videos I watched, I noticed they were using addresses from 1 through 11, which helped me make progress. I’m also sharing some photos in case anyone else wants to try it.
I really like the C‑More HMI, and the software is very easy to use.
Thanks to ADC TechnologyGroup_01 — I found some interesting things in one of the links you shared. I’ll keep trying until I get it working 100%.