J
We have an S7 PLC 400 and an S7 PLC 300, but have not yet purchased Distributed I/O modules. Meanwhile, we would like to connect the 2 PLCs (either by Profibus, TCP/IP, Industrial Ethernet or any other method), so the PLC 400 can access I and Q addresses mapped to memory addresses (or I/Q) on the PLC 300. Thus, the PLC 400 can function as it would after we install I/O modules at the right addresses, without changing any code (or as little as possible...). Is it possible to do so? If so, how? Do we need to install any additonal hardware? software? GSDs?
Thanks
Thanks