Siemens alarm 2000: Emergency Stop
SINUMERIK 810/820 legacy alarm · Siemens 810/820
What it means
The PLC forwarded the EMERGENCY STOP condition to the NC as a general reset alarm: NC START inhibited, servo enable withdrawn, controlled stop followed by follow-up operation. Before resetting, check whether an e-stop cam was struck or the panel e-stop was operated.
Likely causes
- Operator e-stop button pressed
- E-stop limit cam hit by moving slide or table
- Open safety chain (guard, contactor feedback) reported via PLC
Need the part urgently?
Send us alarm 2000 with your machine details — typical RFQ turnaround is 24–48h.