Communications Controller GPI
The analog inputs and three of the relays are on a 37 pin male DB connector.
The rear view is shown.
Pin 1 GPI In l Pin 20 Ground
2 GPI In 2 21 Ground
3 GPI In 3 22 Ground
4 GPI In 4 23 Ground
5 GPI In 5 24 Ground
6 GPI In 6 25 Ground
7 GPI In 7 26 Ground
8 GPI In 8 27 Ground
9 GPI In 9 28 Ground
10 GPI In 10 29 Ground
11 GPI In 11 30 Ground
12 GPI In 12 31 Ground
13 GPI In 13 32 Ground
14 GPI In 14 33 Ground
15 GPI In 15 34 Ground
16 Relay 13+ 35 Relay 13-
17 Relay 14+ 36 Relay 14-
18 Relay 15+ 37 Relay 15-
19 no connect
22 Appendix
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