What causes FANUC alarm 067?

Machine system or function indicated by the alarm name has detected a fault. Control parameter or configuration error related to the alarm condition. Hardware component fault on the CNC or machine. Part program error or illegal operation for the indicated function. Machine interlock or safety condition not satisfied.

How do I fix FANUC alarm 067?

1. Note the alarm number and check the Fanuc alarm screen for any sub-code or additional details. 2. Identify the specific machine system or function from the alarm name. 3. Power cycle the machine to clear transient faults. 4. Consult the Fanuc parameter or operator manual for alarm 067 specific remedy. 5. Contact Fanuc service if the alarm persists after basic troubleshooting.

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FANUC Controller

Program/G-code · Basic · 10-20 minutes

Alarm 067

Fanuc Alarm 067 - CAN NOT ERROR IN MDI MODE

Alarm 067 occurs when a multiple repetitive canned cycle command (G70, G71, G72, or G73) is executed in MDI mode, but the program block that defines the cutting sequence is not stored in the CNC's program memory area. These cycles require a registered program sequence in memory to reference and repeat, which cannot be provided when commanded directly through MDI input.

FANUCProgram/G-codeBasic10-20 minutes

067

Fanuc Alarm 067 - CAN NOT ERROR IN MDI MODE

SYSTEM ALARM 67

Root Cause Summary

Alarm 067 occurs when a multiple repetitive canned cycle command (G70, G71, G72, or G73) is executed in MDI mode, but the program block that defines the cutting sequence is not stored in the CNC's program memory area. These cycles require a registered program sequence in memory to reference and repeat, which cannot be provided when commanded directly through MDI input.

Causes and Fixes

1
Verify the G-code being entered in MDI mode. Check if G70 (finish cycle), G71 (turning roughing), G72 (facing roughing), or G73 (pattern repeating) is being commanded.
2
Register the complete cycle program including the G70-G73 command and associated cutting sequence blocks into program memory (O-number program). Use EDIT mode to input or transfer the program via RS-232 or Ethernet.
3
Execute the program containing the multiple repetitive cycle from MEMORY or AUTO mode instead of MDI mode. Select the O-number program and run from the beginning or use block search to the desired line.
4
If testing individual moves is required, execute only the geometry definition blocks (non-cycle commands) in MDI mode, or use single block execution in MEMORY mode for the complete program.

DIY Feasiblehigh confidence

Call a technician if:

·Parameter corruption suspected
·Memory hardware issues
·Persistent alarm after program verification

Prevention

Always verify program exists before using G70-G73
Use consistent sequence numbering
Regularly backup programs
Document P and Q address ranges

Common Mistakes

Using non-existent sequence numbers
Forgetting to load reference programs
Mixing up P and Q address order
Attempting complex canned cycles in MDI without proper setup

Related Alarms

078 079 080 081

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