Hi There,
I'm trying to develop an application to control and communicate with 5 Eurotherm 2704 controllers on the same bus, the program works with RS232 but I cannot get it to connect via RS485, I have all the correct modules installed in the Eurotherm unit and I have tried every concievable wiring configuration, loopback tests via MAX show that the port is working
eventually I hope to be able to connect to a cRIO-9068 unit, however I'm unable to establish comms, I'm thinking it may be a voltage level issue, has anyone else successfully connected a 2704 controller to a cRIO unit of any type via RS485?
is there any specific issue that anyone is aware of?
many thanks