The M1G’s communications with the M1XSP on the RS485 data bus is a proprietary binary protocol. We don’t give out the information regarding the data on the RS485 data bus. Please forward a copy of the data from the M1XSP Serial Port and a copy of your M1 Programming — with the Account open click File, Export Account, save to your desktop, attach to an email and send it to techsupport@elkproducts.com