Philadelphia Frank
Member
There could be a danger using a Cat 5 cable to connect the 1747-UIC to a SLC500 fixed version. I don’t know why , can’t see how, but I believe the cable caused a CPU fault.
Several weeks ago I posted questions concerning the AB 1747-UIC and the necessity of the $50 recommended\required 1747-C13 cable. The cable appeared to be a plain old Cat 5 networking cable.
The dealer did not have a 1747-C13 in stock and I didn’t want to spend the money anyway, so I asked if I could use a plain cable. Several people posted encouraging suggestions and some reported success using a Cat 5 cable. I did not. I concluded (so did the dealer) that the 1747-UIC was bad and ordered a replacement as well as the proper cable.
The new 1747-UIC with the 1747-C13 worked fine. However, as soon as I tried the Cat 5 cable, the instant I plugged it into my 1747-L40C, I developed a CPU fault. Thinking back to the time I was working with the dealer in his office, his SLC500 Trainer (fixed version) also had a fault. I assumed it was a normal “No Program” or other typical training machine problem. I don’t understand it. How can simply plugging in a cable without anything on the other end cause a problem?
To make matters worse, I believe with the fixed version of the SLC500, the only way to clear the fault is with the hand held programmer. I didn’t have one handy.
I was lucky this happened on a trainer PLC on a bench. Imagine shutting down a production line… no don’t.
I ordered the $50 cable. I think those Allen Bradley guys know voodoo or something.
I hope I was able to contribute something to this forum. You guys have always been so generous and helpful to me.
Frank
Several weeks ago I posted questions concerning the AB 1747-UIC and the necessity of the $50 recommended\required 1747-C13 cable. The cable appeared to be a plain old Cat 5 networking cable.
The dealer did not have a 1747-C13 in stock and I didn’t want to spend the money anyway, so I asked if I could use a plain cable. Several people posted encouraging suggestions and some reported success using a Cat 5 cable. I did not. I concluded (so did the dealer) that the 1747-UIC was bad and ordered a replacement as well as the proper cable.
The new 1747-UIC with the 1747-C13 worked fine. However, as soon as I tried the Cat 5 cable, the instant I plugged it into my 1747-L40C, I developed a CPU fault. Thinking back to the time I was working with the dealer in his office, his SLC500 Trainer (fixed version) also had a fault. I assumed it was a normal “No Program” or other typical training machine problem. I don’t understand it. How can simply plugging in a cable without anything on the other end cause a problem?
To make matters worse, I believe with the fixed version of the SLC500, the only way to clear the fault is with the hand held programmer. I didn’t have one handy.
I was lucky this happened on a trainer PLC on a bench. Imagine shutting down a production line… no don’t.
I ordered the $50 cable. I think those Allen Bradley guys know voodoo or something.
I hope I was able to contribute something to this forum. You guys have always been so generous and helpful to me.
Frank