Siemens alarm 116*: Contour monitoring
SINUMERIK 810/820 legacy alarm · Siemens 810/820
What it means
While accelerating or decelerating, the axis did not reach the newly commanded traverse rate within the time defined by the servo gain factor, so the real path deviated from the programmed contour beyond tolerance. Classic symptom of sticking slides, weak drives or an unrealistically tight monitoring window.
Likely causes
- Mechanical friction, worn ballscrew or guideways
- Misadjusted SIMODRIVE 611-A analog drive
- Servo gain factor / contour window set too tight
Triage note: * suffix = axis index
Need the part urgently?
Send us alarm 116* with your machine details — typical RFQ turnaround is 24–48h.