THOUGHT? a laptop/desktop pc with brew recipe that "times" and dumps sequential temperatures to a controller, beeping alerting you to add "hops" or other ingredients. Simple Visual basic program I can do in a day. I really don't need all the solenoid valves, pumps, exchangers.. just a simple job that keeps me from getting confused. (Yes I get confused at times) You can do yours how you wish.
This is/would be a handy mod for the occasional brewer, or the full blown three pot addict with networking touch screen.
This one has optional? modbus, I know very little about that term or protocol thou. It appears to be a serial current Loop type arrangement.
FOR the Brewing, simpler control panel, more options? I have been looking at different temperature controllers. Used to be (1990s) Honeywell made controllers (UDC3000) comes to mind that had a optional 422 serial port on the back. I could download temperatures from the same computer I wrote software for that mixed dyes.
Do you have any knowledge/experience to contribute? Any PID models that include the software, protocol package for communication to a pc? Advantages would be to have the pc remote and a cable to the cook pot.. No more expensive parts to buy to have a good optioned out cook pot. I have some Serial port subroutines in Visual basic 6 I can share. MScomm.. (Mostly a Dead language now)