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FANUC Alarm ROUT-023 — PAUSE Bad index in SUBSTR

FANUC ROUT-023 (“PAUSE Bad index in SUBSTR”): Incorrect number is specified for SUBSTR builtin routine. First check: Specify a number less than the string length.

Updated 2026-09-17 · LogrobotLM reference

Description

Incorrect number is specified for SUBSTR builtin routine.

Remedy

Specify a number less than the string length.

Related codes

ROUT-022PAUSE Bad index in ORDROUT-024PAUSE SUBSTR length less than 0ROUT-025ABORT Illegal semaphore number

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