I have a UP20 with and XRC controller and I am having some trouble with the remote Servo On function. It is all wired and setup correctly, I can see the specific input turning on when I give the remote signal from my HMI but the servos wont turn on. At the same time if i hit the button on the Play Back panel they turn on. I have searched the ladder and nothing turns up with the relay number for remote servo on (#4045) so I am kind of stumped as to why they wont turn on. I have been able to turn them on a couple times from the remote HMI but I cannot see what conditions are different at the time to allow it to do so. This leads me to believe its a logic problem with the robot but I cannot find this signal used anywhere and according to the manual they recommend not putting it in the ladder. For now I set it so that i can turn the Servos on with the Playback panel even when remote mode is on.
Any ideas as to the problem would be appreciated.