(URI and URO).Bit.Register utility?

On my PLC programm i have two userdefine tags that communicate with the robot (URI and URO). I know those are inputs and Output send to the robots but i want to know for each URo.Bit.Registers what function is the robot doing and what information which URI.Bit.Register is conresponding to.
I tried to find documentation on the subject but i can’t find specific information on the tags.

Those just mean the general purpose boolean registers in the robot. They aren’t designated for anything. They are free to use for your program for things like handshaking signals or other variables.

Ok then what about about the URI.Robot.Real_Time_Machine what is that tag and what does the value represent ?

That’s how long the robot has been powered on. Just the number that is displayed on the run screen