Back in my collage days, 99' I did several developmental control projects, with a small RTU/PC combiation called Sigma Six???. It was a simple 486 cabled controller with 16 I/O ports for 0-10 v 4-20 ma, ac, dc, and thermocouple I/O's. I have currently been tapped for a small project like this and have been amazed that I cannot find a small simple system like this. Most small developmental systems are inclusive of ethernet, Cass I div I classification etc. Does anyone know of a simple plc/DCS hybrid of this nature?? I have looked at Bristol Babcock, opto 22, and AB. not finding what I need.. Thanks