Dh485 Network Damage?

[tgorupMFT 0]

I hope someone can help me out here. Here is my equipment configuation. We have 5 AB SLC 5/03's all connected to 1747-AIC Link Couplers that are all networked together. Then the office PC was connected to a 1747-UIC. At one time everything was working fine, from the PC you could see and talk to all 5 SLCs and 4 panelviews. A person working behind the office shorted out the Cat5 cable that was connecting the pc to the DH485 network, and now no matter which 1747-AIC I plug into, in linx various slcs pop up saying connected for a sec then have a red x on them. The weird thing is the PLCs are still able to talk to each other and our equipment is working fine. I did replace the 1747-UIC USB adaptor, from the wire shorting out it did screw that up, but still cant see anything from it. Could all the Link couplers gone bad? Im lost here.

[gravitar 3]

What happens if you pull the phoenix plug off each AIC? Can you plug into the individual AICs and see anything?

[tgorupMFT 0]

Ok, Im not sure which one is the phoenix plug, so this is what I did. On machine 1, I unplugged the DH485 plug and hooked up the UIC and I could see that machines SLC and Panelview, if I then plugged up the DH485 plug I get a bunch of garbage info comming up in linx and nothing connected, not even the SLC or Panelview that was just connected. On Machine 2 it did not matter what was plugged in or unplugged, if I have the UIC plugged into the AIC I can not see anything at all. Those were the only 2 machines I tested.

[gravitar 3]

My bad.. the Phoenix plug is the one that is flat on one side and has bumps on the other. It is so-named because they are made by Phoenix Contact. They're used everywhere in automation systems.. In this particular application it is used for the DH485 trunkline. I guess the first thing I would establish is that I could plug directly into the front of each SLC and go online. Then I would try going online with each SLC through the AIC, still with the trunkline disconnected. If I don't succeed at each and every station, I wouldn't go any further. I would take a "tested good" AIC over to one of the stations that I was having trouble with, and swap it in and see what happens. I would only start to deal with the network after I had confidence in each station's ability to communicate. Then I would connect the trunkline, ONE STATION AT A TIME, and repeat. Of course the usual rules apply.. grounded at one end, terminated at both.. unique node number for each station, max-polled node number atleast as high as the highest node number and the same at all stations, etc.