A System 450 control module with communications provides the same types of control as the standard control modules. See Table 1 for capabilities of the System 450 control modules with communications.
C450CEN-1 control modules feature an RJ45 Ethernet network port that enables you to connect your control system to an Ethernet network and communicate across it.
C450CRN-1 control modules feature an RS485 terminal block that enables you to connect your control system to an RS485 MODBUS network and communicate on it.
System 450 communications control modules do not provide onboard outputs and require expansion modules to provide outputs.