SSI LED Indicators

The two LEDs above the Drive connector on the RMC’s SSI interface card are axis status LEDs. These LEDs will reflect the operational status of their corresponding axis according to the following table.

LED Action	Axis Status
Continuous Red	One or more of these errors have occurred: No Transducer Transducer Noise Transducer Overflow
Alternating Red/Green	None of the above errors occurred, and one or more of the below errors have occurred and are enabled in the Auto Stop: Overdrive Error Parameter Error Position Overflow Integrator Windup Following Error
Continuous Green	Status good. None of the above are true.

Note: Prior to RMC CPU firmware dated 19991216, the Auto Stop parameter was not used in determining the LED states. Therefore, the only way to keep the LED from showing red was to clear the error.