axismd.ai
FANUC Controller
Program/G-code · Intermediate · 15-30 minutes
Fanuc Alarm 149 - FORMAT ERROR IN G10L3
Alarm 149 occurs when the G10 L3 command for tool life management data registration contains an invalid or unauthorized address code. This typically happens when the program includes address letters not permitted in the G10 L3 format, or when required addresses are missing or formatted incorrectly according to the tool life management parameter configuration.
149
Fanuc Alarm 149 - FORMAT ERROR IN G10L3
SYSTEM ALARM 149
Fanuc alarm 149: SYSTEM ALARM 149. This alarm indicates a fault condition detected by the Fanuc control. Refer to the alarm number and name to identify the specific system or function involved.
Root Cause Summary
Alarm 149 occurs when the G10 L3 command for tool life management data registration contains an invalid or unauthorized address code. This typically happens when the program includes address letters not permitted in the G10 L3 format, or when required addresses are missing or formatted incorrectly according to the tool life management parameter configuration.
Causes and Fixes
- 1
Review the program line containing G10 L3. Verify only valid addresses are used: P (group number), L (must be 3), and data addresses defined in parameters 6800-6809 for tool life management.
- 2
Navigate to SYSTEM > PARAM and check parameters 6800-6809 to confirm which address codes are assigned for tool life data (e.g., H for life count, D for life warning count). Only these defined addresses are valid.
- 3
Correct the G10 L3 block by removing unauthorized addresses. Example valid format: G10 L3 P1 H100 D90; where P=group, H=tool life, D=warning count.
- 4
Reset the alarm using the RESET key and re-execute the corrected program block to verify proper registration.
Call a technician if:
- ·Parameter 6800 series corruption
- ·Tool life management option missing
- ·Persistent alarm after syntax correction
Prevention
- Always validate G10 L3 syntax in MDI before program use
- Regularly backup parameter 6800 series settings
- Use consistent tool life management programming standards
Common Mistakes
- Using coordinate addresses (X,Y,Z) in G10 L3 blocks
- Setting P value to 0 or exceeding maximum tool groups
- Attempting G10 L3 without enabling parameter 6800 bit 0
Seeing Multiple Alarms?
Seeing another alarm with this one? Enter the code.
Get machine-aware diagnosis
AxisMD logs alarms against your actual machines, tracks patterns, and gives AI context your manual doesn't have.
Start freeWas this guide helpful?
Always verify with your machine manual or a certified technician before performing service procedures.