Update on toggle switches: I found some very expensive electromagnetic toggle switches made by Honeywell, in the multiple thousands of dollars range, that are used in aircraft, so these are out of the question. But I also found a youtube video on the A10 warthog flight simulator project that...
You connected a Modbus Slave simulator on a secondary PC and talked to it with Modpoll on the primary PC, correct? That eliminates the PC firewall issue - Modpoll is getting through the PC Firewall. Can you take the PC with Modpoll and connect it locally to the field device (or bri...
It is very similar to primary secondary piping in that the closely spaced tees make or break the separation function. TurboMax does have a simulator program to show DHW capacity at different and lower boiler operating temperatures. I'm not sure if reps have access, or send the data to T...