The 1SI CANopen is a plug-in module between the SIMATIC ET200S and any device running CANopen. You attach the 1SI CANopen to the ET200S and set up how you want the data to flow in the accompanying Anybus Configuration Manager CANopen software. The CM CANopen is a plug-in module between the SIMATIC S7-1200 PLC and any device running CANopen. You attach the CM CANopen to the S7-1200 and set up how you want the data to flow in the accompanying Configuration Studio Software. Supports transparent CAN 2.0A for custom protocol handling. (11-bit CAN identifiers). Supports transparent CAN 2.0A for custom protocol handling. (11-bit CAN identifiers).