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KUKA Error 1537 — STOP DUE TO LOADING OF NEW USER DATA

Error

Displayed as KSS01537 on KRC4 / KRC5 controllers

KUKA 1537 (“STOP DUE TO LOADING OF NEW USER DATA”): The loader for the file "$CUSTOM.DAT" is called while a process is active. First check: Acknowledge the message; do not edit "$CUSTOM.DAT" while a "process is active".

Updated 2026-09-09 · LogrobotLM reference

Cause

The loader for the file "$CUSTOM.DAT" is called while a process is active. No process may be active while "$CUSTOM.DAT" is being edited, as this operation places sufficient load on the system.

Effect

Path-maintaining stop. All active commands are inhibited.

Troubleshooting

Acknowledge the message; do not edit "$CUSTOM.DAT" while a "process is active".

Related codes

1536INCORRECT ARRAY PARAMETER1534WRONG CHECKSUM OF CORRECTION DATA1540INTERRUPT STRUCTURE OVERFLOW1541INCORRECT MACHINE DATA

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