Rs232 Front Panel Program Port - GE TRANSFORMER MANAGEMENT RELAY 745 Instruction Manual

3 INSTALLATION
A 9 pin RS232C serial port is located on the front panel for programming through a PC. This port uses the same Modbus
protocol as the two rear ports. The 745PC software required to use this interface is included with the relay. Cabling for the
RS232 port is shown below for both 9 pin and 25 pin connectors.
GE Multilin
Courtesy of NationalSwitchgear.com
Figure 3–14: RS422 WIRING
Figure 3–15: RS232 WIRING
745 Transformer Management Relay
3.2 TYPICAL WIRING

3.2.16 RS232 FRONT PANEL PROGRAM PORT

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