Does anyone know if FSPMS has any industry standard BACnet or Modbus integration abilities?

If not how does FSPMS typically tell room thermostats to go occupied/unoccupied = sold/unsold?

Any stories from an HVAC supplier integrating to any PMS also welcome. How did it go, did you find it a beneficial relationship etc? Typically we do all of our HVAC scheduling through our front end but in the PMS world that's dumb to have to do the same job twice on multiple systems. Obviously hotels are looking to save as much money as possible and energy usage seems to be a low hanging fruit we can work on.

Also wondering roughly what percentage of hotels currently even do PMS - HVAC integrations with energy savings goals in mind?