Siemens Simatic S7-1500R System Manual page 281

Maintenance
11.5 Resetting CPUs to factory settings
Result after resetting to factory settings
The table below gives an overview of the contents of the memory objects after the reset to
factory settings.
Table 11- 1 Result after resetting to factory settings
Memory object
Redundancy ID
Actual values of the data blocks, instance data blocks
Bit memories, timers and counters
Retentive tags of technology objects
Entries in the diagnostics buffer (retentive area)
Entries in the diagnostics buffer (non-retentive area)
IP address
Device name (module name)
Counter readings of the runtime meters
Time of day
Note
IP address conflict
Resetting the CPU to the factory settings also deletes the IP address of the CPU and resets
the redundancy ID to 1. Please note the following:
An S7-1500R/H redundant system that is already in operation is switched to the STOP
system state. If you reset the CPU with redundancy ID 2 to factory settings, that CPU is
assigned the IP address of the other CPU (with redundancy ID 1). This results in an IP
address conflict. You can only access the CPU with the emergency address. You can find
information on the emergency address in the section Backing up and restoring the CPU
configuration (Page 234).
Possible remedy: Using the display, assign the CPU the redundancy ID previously set. You
can then access the CPU over the original IP address again.
Reference
You can find more information on "Reset to factory settings" in the section on memory areas
and retentivity in the function manual Structure and use of the CPU memory
(http://support.automation.siemens.com/WW/view/en/59193101), and in the STEP 7 online
help. For information on CPU memory resets, please refer to the section CPU memory reset
(Page 231).
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Contents
Set to "1"
Initialized
Initialized
Initialized
Initialized
Initialized
Depends on the procedure:
Using mode selector: Is deleted
•
Using display: Is deleted
•
Using STEP 7: Depends on the setting of the
•
"Retain IP address"/"Delete IP address" option
buttons
Set to "CPU"
Initialized
Set to "00:00:00, Jan. 01, 2012"
S7-1500R/H redundant system
System Manual, 10/2018, A5E41814787-AA