Commissioning
9.3 Commissioning procedure
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA
183
CPU response after a SIMATIC memory card is removed or inserted
Inserting or removing the SIMATIC memory card in STOP operating state triggers a re-
evaluation of the SIMATIC memory card. The CPU compares the content of the
configuration on the SIMATIC memory card with the backed-up retentive data. If the backed-
up retentive data matches the data of the configuration on the SIMATIC memory card, the
retentive data is retained. If the data differs, the CPU automatically performs a memory
reset. A memory reset deletes the retentive data on the CPU. After memory reset, the CPU
switches to STOP. You can find more information on memory resets in the section CPU
memory reset (Page 231).
The CPU evaluates the SIMATIC memory card. This process is indicated by the RUN/STOP
LED flashing.
Note
Using the SIMATIC memory card as a firmware update card
If you use the SIMATIC memory card as a firmware update card, removing and inserting the
card will not result in the loss of retentive data.
Reference
You can find more information on the SIMATIC memory card in the function manual
Structure and use of the CPU memory
Summary of Contents for Simatic S7-1500H
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