1MAC309294-MB F Section 12
Relay physical connections
RER620 557
Technical Manual
Table 430: LED descriptions for COMB01, COMB02
Table 431: LED descriptions for COMB 22/23A
12.2.7.1 COMB022/23A jumper locations and connections
The optional communication module supports EIA-232/EIA-485 serial communication
(X6 connector), EIA-485 serial communication (X5 connector) and optical ST serial
communication (X12 connector).
Two independent communication ports are supported. The two 2-wire-ports are called
COM1 and COM2. Alternatively, if only one 4-wire-port is configured, the port is called
COM2. The fibre-optic ST connection uses the COM2 port.
LED Connector Description
LAN X1 LAN link status and activity (RJ-45 and LC)
LED Connector
Description
1
1. Depending on the jumper configuration
FX X12 Not used
LAN X1 LAN Link status and activity (RJ-45 and LC)
FL X12 Not used
RX X6 COM1 2-wire / 4-wire receive activity
TX X6 COM1 2-wire / 4-wire transmit activity
RX X5 / X12 COM2 2-wire / 4-wire or fiber-optic receive activity
TX X5 / X12 COM2 2-wire / 4-wire or fiber-optic transmit activity
I-B X5 IRIG-B Signal activity
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