Wow, well, I’m flattered by philip’s confidence, and I do know a trick or two but … before we get to any scanners or brains or controllers, don’t forget the I/O. For example, our SNAP-IDC5-FAST has a turn-on time of 0.025 msecs (with some fine print).
Also, forgive me if this is a silly question, but, what if you do go a few more decimal places – you could still have a tie there, right? I guess the odds of that happening drop off with each additional decimal place.
Anyway, I notice that our built-in on-time totalizers show 4 decimal places in the PAC Control debugger, but the manual for the related commands tells me: “The accuracy of the value returned is limited by the input module’s turn-on and turn-off times. Check the specifications for the module to be used.”