Thanks for reply guy's Leads are fully connected and took out and re-connected leads,Not sure how to do a comm port test and i have the WMR928.I have never come across this problem before,it seems to read data as it has data recieved 7 and has got stuck on that and the alarm is a constant green as is data quality and data recived is blank just a grey colour.I have it on COMM port 1 on WD.