I am using the RICADO.OMRON library for .NET to be able to connect to and read tags from an OMRON PLC. This usually does work, but I'm running into an issue with this one PLC I am trying to connect to. It is a UDP connection to a PLC, which uses the same base address as another PLC to hop to a different one. It has a specified remote network ID, remote node ID and local network ID to be able to connect.
I see the request message being constructed with all these parameters in the byte array of length 13 (same as any other request, if I'm not mistaken). However, when I read back the response message, this error always shows up:
https://i.stack.imgur.com/wCKQr.png
I've tried looking for more clarity on this exception online but am not having much luck. As far as I know, the request message is being constructed just fine, as it uses the same code for every connection.
Can anybody provide some clarity on the requirements of the request message, and what the command data is?
