Thermostat Not Enabled indicates the thermostats haven’t sent their temperature reading to the M1. Check to make sure the M1XSP is running Firmware 1.0.50 , the Baud Rate (S1 -S3) is 9600 (up, down, up) , the Mode (S5 -S8) is up, down, up, up, JP3 is RS232 and the JP5 jumper is not on. When you connected directly to the 8811 did you use the included RJ to DB9 cable shipped with the 8811 Protocol Adapter?