Fanuc Alarm 77: SUB PROGRAM NESTING ERROR

Fanuc Alarm 77: SUB PROGRAM NESTING ERROR

Fanuc Control Model:

It applies to:

  • Fanuc Series 0i / 0i-Mate
  • Fanuc Series 16 / 18 / 21
  • Fanuc Series 16i / 18i / 21i and 160i / 180i / 210i
  • Fanuc Series 21 Model B

Fanuc Alarm Description

The subprogram was called in five folds. Modify the program.


Have you faced Fanuc Alarm 77 SUB PROGRAM NESTING ERROR on your machine? Share your experience or troubleshooting tips in the comments below to help other CNC operators and programmers clear this error faster!

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