That may be normal behaviour for your bindings: operate the in-sim switches with mouse and observe their behaiour. clicking the left side button will trip both switches once, clicking again will trip only the left side switch.
If this is normal for my "bindings" (unfamiliar with the application of bindings in X Plane) is there a way to break the bindings or configure these switched to reproduce the activation sequence above? The switched get "Out of Synch" and that get's annoying when practicing emergency operations.
XP has a limitation in the way it's binding works: a signal from a button can be bound to: on, off or toggle. it does not handle 'signal is 0 so switch is of/ signal is 1 so switch is on'. This can cause trouble for DIY builders but with this info you should be good:
As a work-around set MasterAlt/ to 'Generator # 1 on' and Master/Bat to 'Battery 1 off'. Have tested with buttons but should be fine for keeping your switches in sync: if you move them out of sync nothing will happen so just move them back.
When I set up my rocker switches to behave like yours (i.e. give a momentary 'on' when moved in either direction) the only real option is your original binding. i.e. Alt does 'generators all toggle' and Bat does 'batteries all toggle'. It is easy to get them out of sync but if you make sure you turn the bat on before the alt and turn the alt off before the bat they work fine. (incidentally I suspect that is how they should be used in real life anyway. I'd say the behaviour is to prevent you having the alternator running with the battery disconected and burning stuff out.)
I then set up my rockers to behave normally (i.e. 'on' in one position and 'off' in the other) and bound them to 'batteries all on' and 'batteries all off' and 'Generators all on' and 'Generators all off' and had much better results. They allways stay in sync but if you accidentally turn the alt on first (or bat off first) you can just move the other switch to match the ingame position without it getting out of sync.
It would probably be worth letting them know and suggesting they alter the firmware. It should be easy as they already do it for the pitot heat switch (strange they do it for that switch only). It would just be a matter of having the 'on' position report as one button press and the 'off position report as a different button press.
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