Registers values change

Check if you have any BG Logic programs running (MENU -> Setup -> BG Logic). They can change R values in background.

Go to the robot web browser and SEARCH for the register. It will show you every program that it is using it.
Or do a backup and search for it using something like Total Commander.

I think that once I had similar problem with background program which changed the values and didn't know why..

More than likely there is a background program running with logic that changes register values.

The following could be changing R values, in order of probability:

• Foreground program in TP.


• Background program in TP.


• Macro TP program being fired by something (DI/DO/UI/UO, etc).


• Separate Foreground program in TP running in parallel.


• Background (or shell) program in Karel (if equipped).


• Operator screwing around with the pendant.


• Robot's internal PMC (if equipped). Kinda iffy on this on. Need to check if the PMC can actually do this.


• Explicit messaging via Ethernet I/P (if equipped).


• Modification from remote device via ethernet SNPX protocol (if equipped, Basic HMI option).


• Someone modifying a value via the robot's comment webpage.


• Someone modifying a value via the a custom built webpage present on the robot.


• Someone using Fanuc's propriety protocol that robot server uses.


• Loading of numreg.vr.

I'm sure there are a few more methods, but these are the ones I can think of off the top of my head.