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The I/O port provides for the control of 4 external devices and for monitoring 4 external inputs.
GPIO |
Pin # | Color Code | Signal | Name |
1 | Brown | INPUT1 | Single Ended Input 1 |
2 | Orange | INPUT2 | Single Ended Input 2 |
3 | Yellow | INPUT3 | Single Ended Input 3 |
4 | Green | INPUT4 | Single Ended Input 4 |
5 | Red | VCC | Power (Power supply output – fused) |
6 | RS485 | Negative | |
7 | RS232 | RxD | |
8 | Blue | DOUT1 | Output 1 |
9 | Violet/Purple | DOUT2 | Output 2 |
10 | Gray | DOUT3 | Output 3 |
11 | White | DOUT4 | Output 4 |
12 | Black | GND | Common Ground for Power |
13 | RS485 | Positive | |
14 | RS232 | TxD |
GPIO Output Connection
The 4 outputs are configured as “open drain” which means that they can be directly connected to energize external relays, lamps, or other DC devices.
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