I have a Wago PLC and would like to connect with modbus TCP.
It is possible to create READ/WRITE variable?
I use the function FC23 but i can't use the same variable in read and write
I had the same problem that I needed to read and write to the same variable from an HMI using ModbusTCP.
But unfortunately, it seems that this is not possible anymore in Codesys 3.5.
In my solution, i changed the driver to OPC UA, but this might nog be possible for you.
Thank's for your replay, but I have to connect to a Wago PLC.
May be possible to use Network Variable instead of MB protocol. CoDeSys doesnt handle RW variables in MB registers any longer.
Log in to post a comment.