Rs232 Faceplate Port; Cpu Communication Ports - GE L90 Instruction Manual

3 HARDWARE
A 9-pin RS232C serial port is located on the L90 faceplate for programming with a personal computer. All that is required to
use this interface is a personal computer running the EnerVista UR Setup software provided with the relay. Cabling for the
RS232 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.
NOTE
a) OPTIONS
In addition to the faceplate RS232 port, the L90 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.
NOTE
Table 3–3: CPU MODULE COMMUNICATIONS
CPU TYPE COM1
9E RS485
9G 10Base-F and 10Base-T
9H Redundant 10Base-F
9J 100Base-FX
9K Redundant 100Base-FX
GE Multilin
Figure 3–23: RS232 FACEPLATE PORT CONNECTION
L90 Line Current Differential System
3.2 WIRING

3.2.8 RS232 FACEPLATE PORT

3.2.9 CPU COMMUNICATION PORTS

COM2
RS485
RS485
RS485
RS485
RS485
3
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