31
Connector Pin Meaning Notes
CN3 on TG5K2A881
board
1 Com1 TX+ EIA485/422
2 Com1 TX- EIA485/422
3 Com1 RX+ EIA485/422
4 Com1 RX- EIA485/422
5 Common ground Connected to the
frame
6 Common ground Connected to the
frame
7 Common ground Connected to the
frame
8 Common ground Connected to the
frame
9 Common ground Connected to the
frame
5
9
4
8
3
7
2
6
1
Product description
2.5.1 External connectors pin-out
2.5.1.1 EIA485/TELEMETRY connector
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