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GE Energy
52
994-0089–1.00–2, General
RS-485 4-Wire Terminal Block Signal Definitions
4-Wire (default)
RS-485 Channel Position
Number
Function Signal Flow
1 TX1+ OUT
2 TX1- OUT
3 FGND 1 -
4 RX1- IN
Channel 1
5 RX1+ IN
6 TX2+ OUT
7 TX2- OUT
8 FGND 2 -
9 RX2- IN
Channel 2
10 RX2+ IN
Note: The terminal block positions are numbered from 1 to 10 starting from the bottom
of the card.