apu02 Cables
To connect the Moxa with my apus I had to customize the cables I got from aliexpress.
Till now I never had to create my custom serial console cable, so to me this was a new experience.
Finding the combination
I first had to find out the correct combination of cables since it did not work with these cables right away so I put a breadboard in between the cables. To connect the wires to the breadboard I did crimp connectors to them. For this I used a crimping tool and a set of connectors. Then the fun started, based on the information from pcengines and from the Moxa CN2510 Manual about the expected wiring I tried to apply it to the existing cable.
Check the cable
I checked the wiring using a Fluke 115.
Pin combinbations
Finally I had the correct wiring transferred to my cable.
For the RJ45 the Moxa needs the following wiring:
Pin | Collor | Signal Type |
---|---|---|
1 | transparent | DSR |
2 | green | RTS |
3 | white | GND |
4 | orange | TxD |
5 | brown | RxD |
6 | red | DCD |
7 | blue | CTS |
8 | yellow | DTR |
From the DB9 Connector these colors are assigend to the follwing Pins, the apu expects a wiring of a null modem cable.
Pin | Collor | Signal Type |
---|---|---|
1 | brown | DCD |
2 | red | RxD |
3 | white | TxD |
4 | green | DTR |
5 | orange | GND |
6 | blue | DSR |
7 | transparent | RTS |
8 | yellow | CTS |
The mapping
Based on this information I came up with the following mapping:
Pin | Collor |
---|---|
1 | blue |
2 | yellow |
3 | - |
4 | red |
5 | white |
6 | orange |
7 | transparent |
8 | green |
The the RJ45 crimping tool came to use. And the custom cable got produced.
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