Siemens SIMATIC S7 System Manual page 98

PLC concepts
4.3 Saving and restoring data
6. Click the Program button.
7. Enter the password (Page 143) if one is required for programming the memory card.
Note
STEP 7-Micro/WIN SMART first erases any SIMATIC content on the card prior to
transferring the program to the card. Any other data on the card that you've stored using
a card reader and Windows Explorer is left undisturbed.
Note also that you cannot change the CPU to RUN mode if a memory card is inserted.
Restoring the program from a program transfer memory card
To copy the contents of the program transfer card to the PLC, you must cycle the power to
the CPU with the program transfer card inserted. The CPU then performs the following tasks:
1. Clears RAM
2. Copies the user program, the system block (PLC configuration), and the data block from
the memory card to CPU permanent memory.
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System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART