mordred said:If you build a db9 to cat5 adaptor the 1747-UIC will probably work from the RS 232 port of the 1747-UIC
No, those are RS-485 level signals and not compatible with RS-232. Besides, I've got a PCMK card for everything else.
Thanks for the recommendation on the USB/RS232 converter. If I can't get these UICs to work, I'll give them to another controls guy to play with and get the converters you found worked.