We are a small manufacturing company. We have approx 100 AB SLC's and have a properly licensed RSLogix Software. We have recently aquired a used machine which came from the OEM with a PLC5/10 which has some 1771- IBD, 1771 OAD, and one 1771 IQ16 card. We have checked and to get a logix5 software license for one PLC is not worth it for us. We are looking to convert it to a SLC. The question I have revolves around the IQ16 card. The wiring for the IQ16 all comes from a Fanuc Controller and is input for various M-Codes & safetys in the Fanuc. The wiring is such that nothing is isolated. That is all the Grounds are tied together( it is wired as sourcing). So I speculate that the OEM is using the card to do filtering? I have tried to find an isolated input for the SLC but I do not think AB makes one. Any ideas on how to interface the Fanuc into the SLC?