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FANUC Alarm ROUT-024 — PAUSE SUBSTR length less than 0

FANUC ROUT-024 (“PAUSE SUBSTR length less than 0”): Negative number is specified for length argument for SUBSTR builtin routine. First check: Specify a positive number.

Updated 2026-09-17 · LogrobotLM reference

Description

Negative number is specified for length argument for SUBSTR builtin routine.

Remedy

Specify a positive number.

Related codes

ROUT-022PAUSE Bad index in ORDROUT-023PAUSE Bad index in SUBSTRROUT-025ABORT Illegal semaphore numberROUT-026WARN Illegal group number

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →