Fanuc alarm PS0078: SEQUENCE NUMBER NOT FOUND
PS alarm (program/operation) · Fanuc 0i-D
What it means
The sequence number specified for a search was not found — including the jump destinations of GOTO n and M99 Pn in custom macros. Verify the target N number exists in the executed program.
Likely causes
- GOTO/M99 P pointing to a nonexistent N number
- Branch target removed during edits
- Jump executed in the wrong subprogram
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