3-22 B90 Low Impedance Bus Differential System GE Multilin3.2 WIRING 3 HARDWARE33.2.6 RS232 FACEPLATE PORTA 9-pin RS232C serial port is located on the B90 faceplate for programming with a personal computer. All that is required touse this interface is a personal computer running the EnerVista UR Setup software provided with the relay. Cabling for theRS232 port is shown in the following figure for both 9-pin and 25-pin connectors.The baud rate for this port is fixed at 19200 bps.Figure 3–21: RS232 FACEPLATE PORT CONNECTION3.2.7 CPU COMMUNICATION PORTSa) OPTIONSIn addition to the faceplate RS232 port, the B90 provides two additional communication ports or a managed six-port Ether-net switch, depending on the installed CPU module.The CPU modules do not require a surge ground connection.The managed Ethernet switch (modules 9S and 9T) is not available for the B90 device.Table 3–3: CPU MODULE COMMUNICATIONSCPU TYPE COM1 COM29E RS485 RS4859G 10Base-F and 10Base-T RS4859H Redundant 10Base-F RS4859J 100Base-FX RS4859K Redundant 100Base-FX RS4859L 100Base-FX RS4859M Redundant 100Base-FX RS4859N 10/100Base-T RS4859P 100Base-FX RS4859R Redundant 100Base-FX RS4859S Ethernet switch module with two 10/100Base-T and four 100Base-FX ports RS485NOTENOTENOTE
