Siemens SIMATIC S7-1500 System Manual page 299

undesirable behavior, you can restore the plant to an earlier state. Before you download a
changed configuration to the CPU, first use the option "Backup from online device" to create a
complete backup of the current device state. If you have assigned a password to protect
confidential PLC configuration data, then this password is not secured. For more information
on the password, refer to the section Protection of confidential configuration data (Page
236).
Upload from device (software)
With the option "Upload from device (software)", you load the software project data from the
CPU to an existing CPU in the project.
Upload device as new station
If you are operating a new PG/PC in the plant, the STEP 7 project that was used to create the
plant configuration might not be available. In this case, you can use the option "Upload
device as new station" to load the device data to a project in your PG/PC.
Snapshot of the actual values
To allow you to restore the actual values at a later date, back up the actual values of the data
blocks using the option "Snapshot of the actual values".
Overview of backup types
The table below shows the backup of CPU data depending on the selected type of backup and
its specific characteristics:
Table 11-17 Types of backup
Actual values of all DBs
(global and instance data blocks)
Blocks of the type OB, FC, FB and DB
PLC tags
(tag names and constant names)
Hardware configuration
Actual values (bit memories, timers
and counters)
Contents of the SIMATIC memory
card
Entries in the diagnostics buffer
Current time
Password for protection of confiden­
tial configuration data
1) From backup CPU
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
Backup from online Upload from device
device
✓
✓
✓
✓
✓
✓
--
--
--
11.6 Backing up and restoring the CPU configuration
Upload device as
(software) new station
✓
✓
✓
--
--
--
--
--
--
Commissioning
Snapshot of the
actual values
✓ ✓
✓ --
✓ --
✓ --
-- --
-- --
-- --
-- --
-- --
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