Saving/Retrieving Whole Projects To/From The Micro Memory Card - Siemens SIMATIC S7-300 Manual

Central processing unit
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6.1.6

Saving/retrieving whole projects to/from the Micro Memory Card

Function principle
Using the Save to Memory Card and Retrieve from Memory Card functions, you can save all
project data to a SIMATIC Micro Memory Card, and retrieve these at a later time. For this
operation, the SIMATIC Micro Memory Card can be located in a CPU or in the MMC adapter
of a PG or PC.
Project data are compressed before they are saved to a SIMATIC Micro Memory Card, and
uncompressed when retrieved.
The volume of project data to be saved corresponds with the size of the project's archive file.
Note
In addition to project data, you may also have to store your user data on the MMC. You must
therefore make sure beforehand that you select an MMC with sufficient memory capacity.
A message warns you if the memory capacity on your MMC is insufficient.
Even though you can load technology configuration data from the Micro Memory Card, you
cannot edit the data.
For technical reasons, you can only transfer the entire contents (user program and project
data) using the Save to memory card action.
Handling the functions
How you use the Save to memory card / Retrieve from memory card functions depends on
the location of the SIMATIC micro memory card:
• If the micro memory card is inserted in the MMC slot, select a project level that is uniquely
• If project data are not available on the currently used programming device (PG/PC), you
• If the micro memory card is located in the MMC programming device of a PG or PC, open
Note
Project data can generate high data traffic. Especially in RUN mode with read/write access
to the CPU, this can lead to waiting periods of several minutes.
S7-300 CPU Data: CPU 315T-2 DP
Manual, 12/2005, A5E00427933-02
assigned to the CPU from the SIMATIC Manager project window (e.g. CPU, program,
source or blocks). Select the PLC > Save to memory card or PLC > Retrieve from
memory card menu command. Now the complete project data is written to / retrieved
from the Micro Memory Card.
can select the source CPU via "Available nodes" window. Select menu command PLC >
Display accessible nodes to open the "Available nodes" window. Select the
connection/CPU that contains your project data on Micro Memory Card. Now select menu
command Retrieve from Memory Card.
the "S7 memory card window using the File > S7 Memory Card window > Open menu
command. Select the PLC > Save to memory card or PLC > Retrieve from memory card
menu command. to open a dialog in which you can select the source or target project.
6.1 Memory areas and retentive address areas
Memory concept
6-9

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Simatic s7-300 cpu data: cpu 315-t-2 dp

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