I have an MRX-1 and an MX-5000. I have been testing to see if I can get back a return from my devices to determine if the power is on or off. I know they send a return because I have seen it in testing outside the URC system. I am not able to get any response back from the device on the MX-5000. I have set the return variable to a know value and that is what is in there after the command executes. Am I missing something or is IP return not supported on the MX-5000 and RS-232 return on the MX-5000 via the MRX-1?