Looking further down my log, I may be chasing an issue that's noise related. I see the following in AHP:
181 1/26/2012 5:12:56 AM Receive O3 (Garage Front (Motion Sensor))
182 1/26/2012 5:12:56 AM Receive O On (Garage Front (Motion Sensor))
183 1/26/2012 5:12:56 AM Transmit A6 (Entry Lights)
184 1/26/2012 5:12:57 AM Transmit A On (Entry Lights)
185 1/26/2012 5:12:57 AM Transmit B1 (chime)
186 1/26/2012 5:12:58 AM Transmit B On (chime)
187 1/26/2012 5:12:59 AM Receive O3 (Garage Front (Motion Sensor))
188 1/26/2012 5:30:18 AM Macro A7 (Cabinet Lights)
189 1/26/2012 5:30:18 AM Macro A Bright 100(Cabinet Lights)
This appears as follows in my code's log:
RecvAction: RecvPlc, o3, On, , ,
RecvAction: RecvPlc, a6, On, , ,
RecvAction: RecvPlc, b1, On, , ,
RecvAction: RecvPlc, a7, Bright, 100, ,
Is it possible that there's some noise/signal sucker on the line that damages or destroys the signal? I know signals can be damaged and destroyed such that they are invalid (based on reading other threads), but can a signal be damaged but still interpreted as valid (such as an ExtCode)? This probably relates to what the unknown code means (as posited at the end of my last post).