Restoring Data After Power On - Siemens SIMATIC S7 System Manual

While the copy operation is in progress, the STOP and RUN LEDs on the S7-200 SMART
CPU alternately flash. When the S7-200 SMART CPU completes the copy operation, the
LEDs stop flashing.
Note
Program transfer card compatibility
Restoring a program transfer card that you created on a different CPU model might fail due
to the differences in model types. During the restore process, the CPU validates the
following characteristics of the program content stored on the memory card:
• Size of program block
• Size of V memory specified in the data block
• Quantity of onboard digital I/O configured in the system block (Page 133)
• Each retentive range that is configured in the system block
• Expansion module and signal board configurations in the system block
• Axis of Motion configurations in the system block
• Forced memory locations
Note
In addition to using a memory card as a program transfer card, you can also create a reset-
to-factory-defaults memory card.
See also
Creating a reset-to-factory-defaults memory card (Page 167)
4.3.7

Restoring data after power on

The CPU performs the following actions after a power cycle:
● Restores the program block and the system block from permanent memory
● Restores the retentive memory assignments
● Restores the non-retentive portions of V memory from the contents of the data block in
permanent memory
● Clears the non-retentive portions of other memory areas
S7-200 SMART
System Manual, V2.3, 07/2017, A5E03822230-AF
4.4 Changing the operating mode of the CPU
PLC concepts
99