@Loose-Caboose posted:But my real question was if you use the process outlined and other Locomotives sit on the layout when you enter the sequence of commands while all Locomotive are in the "RUN" mode would thy all not receive and react to the sequence since there is nothing that specifies (
No. Because you would be addressing the locomotive first. Then entering the commands.
Regardless, any tmcc or legacy locomotive will only respond when addressed by its unique i.d. that you have programmed.
The only exceptions would be if you never reprogrammed anything out of the box as most come as i.d. #1 from the factory. Or in the case of newer legacy.i.d.# 99 is the "all" code.