You can create a decentralized control network of up to 63 controllers using CANbus-enabled M90 models. This is sometimes called a multi-master network. In an M90 network, CANbus enables inter-PLC data exchange. Technical specifications and wiring diagrams are given in the M90 User Guide.
Using your PC, you can access a networked M90 unit via its RS232 port. You can then view, read, and write data into any unit. This feature can also allow you to view your network via a SCADA program.