Smaller HMI displays are getting relatively cheap nowadays and I was wondering if they can be used with OpenHab. I played around with sensors and outputs, so I know how modbus works, but in those cases OpenHab is polling them for updates.
If I am not mistaken in case of an HMI, the display is polling the registers and flags of a PLC to get the values of the variables visible on the screen. Is this something that can be done with OpenHab?
Regards,
Csongor