I ran into an interesting situation today while coding up my PDI packet parser for the ASC2. In TMCC land (via the LCS Ser2), accessory commands focus on the Aux 1 and Aux 2 buttons on the Cab2 controller. This makes it very easy to understand which button was pressed. That said, it is Not at all clear, whether buttons are being used to control a momentary action device, such as the little man that goes round and round inside a control tower, or an on/off toggle device like the interior light in that control tower.
With the ASC2, you are presented with very clear on and off states. The Aux1 button sends a series of “on” packets for as long as you keep the button pressed, and sends a single “off” packet once you take your finger off the button. The Aux2 button functions completely as a toggle. The first time you press it, and “on” packet is sent. With the second press, an “off” packet is sent. This is great, however, you have no way to tell which button was pressed!
I want to use the PDI data available on the Base 3 to initialize my system. This mismatch between TMCC and PDI lands makes this challenging.
Any thoughts?
Thanks,
— Dave
