MicroLogix Series 1000 Troubleshooting

Community General
#1

Hello, I’m having difficulties getting my MicroLogix Series 1000 to communicate with my laptop.
I have been provided with RSLogix 500 two cables for this. The first cable is from the PLC (the pin connector end). The second cable is a Male adapter to hook up the first cable via USB.
The Model# for the PLC is CF-40T-L32BWA
The Cable# is Allen-Bradley 1761-CBL-PM02.SER.C

I have looked up online and it seems that maybe I need a new cable (1747-UIC) to communicate properly.

Did I do my homework right, or am I missing something?

Sincerely,
Dverbanick

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#2

Hi Dverbanick,

The cable you have on hand will work with the MicroLogix 1100. The 1747-UIC is also an option. The difference between the two is that the first one communicates directly over RS232 while the other is an RS484 converter.

I’ve seen both used; both cables will require a USB converter if you don’t have a serial port on your PC which most don’t. I’d recommend buying a known brand as some of the cheap USB converters may give you issues.

I’d use the cable you have on hand, select RS232 / Serial on RSLinx and try connecting that way before buying the other cable.

Vlad

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#3

exactly what plc do you have a 1400, the code should start with 1766? How many ports does the plc have, one db9, one ethernet and the circular connector? I have had problems with this type of PLC and when it does not connect serial in 232 it is 485, so you are going to have to buy that converter.

#4

Thank you for all your input. It turns out that the solution was in fact to buy a new cable. The cable we had ended up being faulty, as it didn’t show up in the Comm Ports the second time I tried using it. I ordered in a new RS232 cable and that ended up working just fine. I guess it was just a hardware issue after all. Thanks again for your help!

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