I have a five year old system where the GE Concord Superbus Automation module connects to a Vlinx 902 Serial to IP converter and then into my network. Every couple of weeks the communication between the Vlinx and Superbus module gets dropped and I cannot get it to re-connect. Cycling the power on/off does not help. My installer can get things working by using Composer Pro to add the Vlinx or Superbus back into the project (not sure which one though). Does anyone have any idea why the communication would get dropped? When it does I get a error on my GE keypad that says "BUS Failure Unit AM6". I can still see the VLinx on my network but the Port Status now shows "Not connected" and I have no more access to the Security through Control4.