FANUC Alarm OPTN-020 — Too many %s references
FANUC OPTN-020 (“Too many %s references”): The maximum number of feature references in the .fd files is exceeded. First check: If the alarm includes: Increase KAREL constant: CONFIG CLIMIT REQUIRE DLIMIT OPTION OLIMIT Robot REQUIRE RLIMIT STANDARD SLIMIT
Updated 2026-08-29 · LogrobotLM reference
Description
The maximum number of feature references in the .fd files is exceeded. These include: REQUIRE, INCLUDE,
Remedy · Remède
If the alarm includes: Increase KAREL constant: CONFIG CLIMIT REQUIRE DLIMIT OPTION OLIMIT Robot REQUIRE RLIMIT STANDARD SLIMIT
Frequently asked · Questions fréquentes
- What does FANUC alarm OPTN-020 mean?
- FANUC OPTN-020 (“Too many %s references”): The maximum number of feature references in the .fd files is exceeded. These include: REQUIRE, INCLUDE,
- How do you troubleshoot FANUC alarm OPTN-020?
- If the alarm includes: Increase KAREL constant: CONFIG CLIMIT REQUIRE DLIMIT OPTION OLIMIT Robot REQUIRE RLIMIT STANDARD SLIMIT
Related codes / Codes liés
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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →