I am looking for an IO system to link with a DCS vis a MB-RTU/TCP. The IO from the DCS is EXTRAMLY costly and I'd like to use something more reasonable in price.
I have some 200 AI and some 120 AO. The remote IO does not need to perform ANY control functionality. It should be a pure IO "server".
I thought of using a PLC as a remote IO - the Momentum line, or Siemens S7-300. I was also thinking about only IO type like IOMEGA and others.
The IO should all fit nicely into a cabinet. Therefore I think that a rack configuration of AI-16 channels and AO-16 channels would fit in nicely.
Any ideas about other options or products are more than welcome.
Thanks a lot, Oren