System: CommandFusion/iPad talking to RadioRa via telnet or via telnet through a Moxa IP to RS232 (RS232 or IP communication)
The HVAC controller is very erratic when sending a response.
For example, #HVAC,21,2,71,75 should respond with ~HVAC,21,2,71,75
It will do this once and will not respond to additional commands until 5 to 10 seconds have elapsed.
For now, I am sending a query command following any command the controller.
Cool SetPoint down command (cool/heat are stored variables set by the last response from the HVAC controller)