beelzerob
Senior Member
Well, after much experimentation and re-reading of all the docs I can find, I still can't seem to communicate with my ALC controller.
I have 2 switches hooked up to the controller, and the serial expansion card is plugged into the controller. When I press a button, I see the Activity light flicker, as well as the Transmit light on the serial expander. However, I do not get any messages on my PC.
When I first started trying this, I was able to receive messages when I pressed buttons. The messages weren't consistent, though, and I also did not seem to be able to transmit to the device. So, I re-read the docs, and re-wired my RS232 DB9 to RJ45 connector, and tried again. Since then, I haven't been able to get even those first messages. And no message I've sent has caused any kind of noticeable effect.
So, help me out with how things should be wired. Obviously the 2 switches sit on the + and - lines, with different addresses. Those 2 wires are plugged into the controller (or into the separate wiring panel, which I don't have). Then, on the RJ45 connector on the serial expander, the only signals listed are trans, recv, and ground. On a standard db9, those are like pins 2, 3, and I think 7. When wiring, do I wire the PC/DB9 trans to the expanders recv, and db9 rec to the expanders trans? And then ground to ground? If so, that's the last then I tried, and nothing seemed to work.
Any help is appreciated!
I have 2 switches hooked up to the controller, and the serial expansion card is plugged into the controller. When I press a button, I see the Activity light flicker, as well as the Transmit light on the serial expander. However, I do not get any messages on my PC.
When I first started trying this, I was able to receive messages when I pressed buttons. The messages weren't consistent, though, and I also did not seem to be able to transmit to the device. So, I re-read the docs, and re-wired my RS232 DB9 to RJ45 connector, and tried again. Since then, I haven't been able to get even those first messages. And no message I've sent has caused any kind of noticeable effect.
So, help me out with how things should be wired. Obviously the 2 switches sit on the + and - lines, with different addresses. Those 2 wires are plugged into the controller (or into the separate wiring panel, which I don't have). Then, on the RJ45 connector on the serial expander, the only signals listed are trans, recv, and ground. On a standard db9, those are like pins 2, 3, and I think 7. When wiring, do I wire the PC/DB9 trans to the expanders recv, and db9 rec to the expanders trans? And then ground to ground? If so, that's the last then I tried, and nothing seemed to work.
Any help is appreciated!