1747-UIC, New vs. Old

[stickman47]

Gents,

 

I have several L40A's in service (yes, they still exist). They have an RJ-45 port that is configured for DH485.

Until recently I have been using an older 1747-UIC, with the attached cables. This UIC was getting old so I purchased the new 1747-UIC as a replacement.

The new UIC has a USB pigtail and ports for RJ-45 and 9-pin.

The first time I plugged the new guy in the USB and OK lights came on but I could not get RSLinx to communicate with the PLC. I switched back to the old cable and it worked.

Wen I tried the new one again the OK light came on but not the USB light.

Windows control panel does not "see" the new device in the com5 port. I have tried to get a driver for the new one but I am told it is built in and should download automatically. Is this a fact? Do I need to get a different driver for the new one?

 

The old UIC still works but I don't know how much longer...

[Joe E.]

I remember running into something similar with the L40s and the UIC adapter but it's been a LONG time since I had to connect to one. I looked back through my stuff and came across the attached instructions for configuring the UIC to talk to an L40.

Let me know if that works for you.

WI_1747-UIC-AlternateConfig.pdf

[Mickey]

Old 1747-UIC? Did not know there was an old and new.

Is it a 1747-PIC?

Can you post a picture of it.

[stickman47]

Can't send picture but Ref: PUB. 1747-in063c-en-p, page 4 has drawing.

New unit has only one cable, for USB, attached.

RS-232, and DH-485 connections are now jacks instead of pig tails.

Unit comes with DIN rail mount that is removable.

 

[Joe E.]

That looks like the units we have too, going back to 2011. I wasn't aware that there was an older version of the -UIC itself. I do know that it took the place of the -PIC module.

There is a cheaper third-party alternative to the -UIC from Industrial Concepts that we've had very good results from:

https://www.plccable.com/allen-bradley-1747-uic-usb-to-dh485/