Automatic Memory Reset - Siemens SIMATIC S7-1500 System Manual

Commissioning
9.5 Memory reset
9.5.1

Automatic memory reset

Possible cause of automatic memory reset
The CPU executes an automatic memory reset, if an error occurs that prevents normal
further processing.
Causes for such errors can be:
● User program is too large, and can't be completely loaded into work memory.
● The project data on the SIMATIC memory card are damaged, for example because a file
was deleted.
● If the SIMATIC memory card is removed or inserted and the backed-up retentive data
differs in structure from that of the configuration on the SIMATIC memory card.
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S7-1500 Automation System
System Manual, 02/2014, A5E03461182-AB