Hi there!
I'm trying to communicate a S7-1500 CPU via Modbus TCP with an CJ2 PLC using a CP1W-MODTC61 card.
I configurated the MB_Client and the CP1W-MODTC61 was also configured as the attached files show. The thing is that I could not read any data from the PLC (the registers are in the correct address and memory area) and I tried different combinations until I started to get data (with the correct values) for a moment, even with a configuration I already tried.
After that the block kept writing a 8200 error in the status word and no data was received. According to the manual that reads:
A different Modbus request is currently being processed via the port.
Another instance of MB_CLIENT with the same connection parameters is processing an existing Modbus request.
I can confirm that there is no other device doing a Modbus request in either the 1500 or the CJ2, and I only have one MB_CLIENT block in the entire program.
So that's where my question comes, is the CPU detecting another "ghost" request, even if there shouldn't be any? Or am I missing something in the CONNECT structure of the block?
Thanks in advance for your support!
