Watchdog Signal

yes, just bring the power to zero. Anytime power is applied to the TIU channel, a watchdog signal is sent out.

If you have a DCS Remote Commander languishing in a box somewhere, you can make it into a WD Generator, then you'll never have a problem with engines waking up on the sidings.

DCS-RC Perpetual Barking Watchdog Generator

John, if this is the remote commander that you are referring, unfortunately I do not have one.

Besides shutting down the track after powering up (My engines starts up when I add siding track power - no real control other than whistle/bell due to no watch dog) if you are using the DCS remote, just hit the shutdown button immediately. Then, hit start the engine button, and it will work fine.  Guests will just assume the engine did not catch the first time, and the engineer had to hit her again! John has a dodad to aid, but this is easy also....and costs nothing!