Online and diagnostic tools
15.17 Backing up and restoring a CPU
S7-1200 Programmable controller
1354 System Manual, V4.2, 09/2016, A5E02486680-AK
Making a backup of your configuration can be useful if you want to return to a specific
configuration. You can restore the current configuration at a later time.
You can create as many backups as you want and store a variety of configurations for a
CPU. To make a backup, you must meet the following prerequisites:
● You have already created the CPU in the STEP 7 project.
● You have connected the CPU to the programming device/PC directly using the
PROFINET interface of the CPU. Backup and restore operations do not support the
PROFIBUS interfaces of the CMs.
● The CPU is online. (If there is no online connection, the backup process establishes an
online connection.)
● The CPU is in "STOP" mode. (If the CPU is not in STOP mode, the backup process
prompts you to allow the CPU to go to STOP mode.)
To create a backup of the current configuration of a CPU, follow these steps:
1. Select the CPU in the project tree.
2. Select the "Backup from online device" command in the "Online" menu.
If necessary, you must enter the password for read access to the CPU and confirm that
the CPU should enter "STOP" mode.
The backups are named with the name of the CPU and the time and date of the backup. The
backup includes all data that are needed to restore a particular configuration of a CPU. The
CPU backs up the following data:
● Contents of the memory card if one is present
● Retentive memory areas of data blocks, counters, and bit memory
● Other retentive memory contents, such as IP address parameters
The backup contains the current values of the CPU but does not include the diagnostic
buffer.
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