We are considering using the Koyo 450 with PID CoProcessor for a large scale temperature control project (thermoplastic co-extruder).
If you've had any experience with the Koyo and CoProcessor, I'd be interested to hear what you think of it as a control system; both in setup/programming, and...
Try www.iowathinfilm.com or if you're just looking to get a few to play with, go to Radio Shack.
Other useful search criteria: photo voltaic, thin film.
-EDSparks
If board level circuits aren't what you're looking for, an off the shelf signal conditioner would do this nicely. We use Action Instruments' Ultra Slim Pack Isolators to perform similar functions. They can be ordered in a variety of input/output configurations. The one you would want is their...
The Mitsubishi Electric US website offers the GX Developer programming software for download as well as manuals for a number of different PLC products.
http://www.meau.com/eprise/main/sites/public/DOWNLOADS/Software/default
-Eric