PLC variable index numbers cannot be identical (For ER series, version V5.0)

52520

Alarm cause: PLC variable index numbers cannot be identical

Corrective measures: Check whether PLC variables with the same index exist

Applicable equipment

Source: Fault JSON · ESTUN_fault_codes_zh_en.json · SHA-256 e318b3bb20315d070a7f50bd7649bf7dfd7d178030a4f7c736a5aa22f48095f9 · 52520

Brand	ESTUN
Updated	2026-10-27

52520

Alarm cause: PLC variable index numbers cannot be identical

Corrective measures: Check whether PLC variables with the same index exist

Applicable equipment

Source: Fault JSON · ESTUN_fault_codes_zh_en.json · SHA-256 e318b3bb20315d070a7f50bd7649bf7dfd7d178030a4f7c736a5aa22f48095f9 · 52520

Brand	ESTUN
Updated	2026-10-27