Goals and Symptoms

Concept 2.6 - During Download Changes the PLC sporadically stops with Stop Code 0004 (Logic CheckSum Error)
The problem might occur if the 140CPUx341x A EXEC rev 1.40 or 140CPU53414 B EXEC rev 1.12
are used in the application and the PLC Memory Defragmentation is activated.

Facts and Changes

Reason: In some cases the Defragmentation changes administration data without changing
the CheckSum.

This problem does not occur with
140CPUx341x A EXEC rev 1.39 and lower
140CPU53414 B EXEC rev 1.11 and lower

Causes and Fixes

The problem will be fixed with
140CPUx341x A EXEC rev 1.41
140CPU53414 B EXEC rev 1.13