Applicable Systems
M-series
T-series
Symptoms
Alarm 201: Exit error: program not ended properly. The CNC system displays this alarm on the operator panel.
Possible Causes
- Programming syntax error in the NC program
- Invalid or unsupported command used
Troubleshooting Steps
- Step 1: Read alarm 201 on the CNC display and note the full alarm message
Alarm code and description displayed for diagnosis - Step 2: Check the machine status and identify any obvious mechanical, electrical, or pneumatic issues
Visible faults identified or confirmed as intermittent - Step 3: Consult the manufacturer manual for alarm-specific troubleshooting procedures
Root cause identified per manufacturer guidelines - Step 4: Apply the recommended fix and reset the alarm
Alarm cleared and machine resumed normal operation
How to Reset
To reset alarm 201: 1) Address the root cause. 2) Press the RESET key on the CNC panel. 3) If the alarm persists, cycle power to the control. Caution: Repeated alarms without fixing the cause may cause damage.
Frequently Asked Questions
- Q: What does alarm 201 mean?
Alarm 201 indicates: Exit error: program not ended properly. Follow the troubleshooting steps to resolve the issue.
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Source: HelmanCNC.com - https://www.helmancnc.com/centroid-cnc-alarms-errors-messages/
Category: CNC
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