6 (Argument: 5)
Process Image Size Exceeded
Wago · PFC200 PLC
What does 6 (Argument: 5) mean?
The maximum permissible size of the process image has been exceeded. This indicates that the combined data requirements of the connected I/O modules are too large for the controller's process image memory, preventing proper data exchange between the controller and I/O modules.
Common Causes
- Too many I/O modules connected, or modules with large data footprints, exceeding the controller's process image memory limits.
- Incorrect configuration of I/O modules leading to an oversized process image.
- Attempting to map an excessive number of input/output bits into the controller's process image.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Switch off the power supply to the controller.
- 2
Reduce the number of I/O modules connected to decrease the process image size.
- 3
Switch the power supply back on to the controller.
Verified technical data. Last updated: March 2026
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Source: Wago PFC200 PLC