Automatic Memory Reset; Manual Memory Reset - Siemens SIMATIC S7-1500 System Manual
Automation system
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Also See for SIMATIC S7-1500:
- System manual (523 pages) ,
- Function manual (402 pages) ,
- Manual (188 pages)
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10.6.1
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 you remove or insert the SIMATIC memory card and the backed-up retentive data
differs in structure from that of the configuration on the SIMATIC memory card.
10.6.2
Manual memory reset
Reason for manual memory reset
Memory reset is required to reset the CPU to its "original state".
CPU memory reset
There are three options for performing a CPU memory reset:
● Using the mode selector
● Using the display
● Using STEP 7
Procedure using the m ode s elector
Not e
Memory reset ↔ Reset t o f actory settings
The procedure described below also corresponds to the procedure for resetting to factory
settings:
• Selector operation with inserted SIMATIC memory card: CPU executes a memory reset
• Selector operation without inserted SIMATIC memory card: CPU executes reset to factory
settings
Automation system
System Manual, 09/2016, A5E03461182-AD
Commissioning
10.6 CPU memory reset
177
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