Hello All,
My Parent Company has been using Opto22 Groov Rios for expanding Analog IO to PLC systems.
The issue we have with these devices is that the IO periodically freezes, maintaining the analog outputs.
We make compression based hot water heaters, and this behaviour causes some undesired effects.
The red box is indicating that the Analog sensors have stopped updating. 
Anyway, we are searching for a suitable replacement. The devices operate in a control panel,
an may be subject to electrical noise, and heat from -10F to 120F
we would really like something with at least 10 Analog inputs.
Modbus is fine. We have some experience writing other protocols, but that is frequently tedious in
A PLC programing environment. We need a professional device, with a Din mounted case, no bare circuit boards.
Analog outputs 0-10V output would be great.
The groov Rios do what we want, the specs match our needs. Its their failure conditions that we have a problem with. We have brought this up with
Opto22, and no solution has been presented. Its a thing that happens. No one knows why, or has a fix. its been about a
year of dealing with this, and I'm so over it.
If there are alternatives, I would love to hear about them.
