How does everyone go about collection servo hours from their robots to decide when preventive maintenance is due? In the sys timer menu you can see "on power time", "servo on time", "running time", and "waiting time". In addition there is the hour counter on the door. When I'm trying to decide when our 960, 3840, 5780, and 11520 hour pm's are due but not entirely sure which timer to use. I used to think the "servo on time" seemed to be the most important but if an image is loaded this gets reset to whatever the previous value was.
I've also tested out the difference between the "servo on time" and the hour timer on the door panel and they don't seem to correlate.