Does "L232>" have to be in front of the string? My current string looks like this "KBP ,[01:06:23],1\r". The HW processor is connected to the Crestron AV2 via Link 7. This works. Thefish, does link 7 have to be configured if it is just listening to RS-232? It is currently not and the Crestron AV2 controls it. Also which driver? Generic?