Check to make sure the M1 Serial Number is all 8 digits and should start with 0. The M1 Serial Number can be found on the bottom of the M1’s black plastic housing or from Keypad programming Menu 9-Installation Programming, 07-Globals System Definitions, G43.
Also check G34 to make sure the M1 Baud Rate is 9 = 115200
The Default RP Access Code is 246801
Click Setup, Options, Network Adapters and in the dropdown the IP of your PC should be listed and should be in the same range of the M1XEP — For example the M1XEP at 192.168.1.xxx and the PC is 192.168.1.yyy