Main Memory Check Error

What does 00130000 hex mean?

An error was detected in the memory check of the main memory in the CPU Unit's PLC Function Module. This error is continuously detected, indicating a major fault level, and will stop user program execution and controller operation.

• A conductive material has gotten inside the CPU Unit.
• Noise causing data corruption in memory, microcomputer malfunctioning, or memory write circuit malfunctioning.
• A software error.
• Data corruption caused by cosmic rays or radiation.
• CPU Unit hardware failure (memory element failure, memory peripheral circuit failure).

Click steps to track your progress.

1. 1

   If conductive material is suspected, blow out the CPU Unit with air.

2. 2

   Ensure the control panel is closed during operation and avoid metal working nearby.

3. 3

   If noise is suspected, check the FG (Frame Ground) and power supply lines, then implement noise countermeasures.

4. 4

   Cycle the power to the Controller; if the error persists or occurs frequently, replace the CPU Unit.

5. 5

   Perform regular inspections of the CPU Unit's memory and peripheral circuits.