3512
G-Code Combination Invalid
Fanuc · Series 0i Manual Guide
What does 3512 mean?
This MC alarm (specific to Series 30i) indicates that G codes specified in the program cannot be combined as programmed. Specifically, a figure block has been paired with a machining type block that is not compatible or available for that figure type, leading to an invalid operation sequence.
Common Causes
- The program contains an invalid sequence or combination of G-codes.
- Attempt to use G-codes with mutually exclusive functions simultaneously.
- NC program syntax error with G-code ordering or parameter values.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Modify the machining program to specify a correct and compatible combination of machining type block and figure block.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fanuc Series 0i Manual Guide