NOTE
Memory size of the SIMATIC memory card
If you perform a firmware update via the SIMATIC memory card, you must use a large enough
card.
Check the specified file sizes of the update files when downloading them from Siemens
Industry Online Support. The total size of the update files must not exceed the available
memory size of your SIMATIC memory card.
You can find more information on the capacity of SIMATIC memory cards in the section
Accessories/spare parts (Page 369) and in the function manual Structure and use of the CPU
memory (https://support.industry.siemens.com/cs/ww/en/view/59193101).
Installation of the firmware update of R/H-CPUs
For a firmware update of the R/H-CPUs, you must switch both R/H-CPUs to the STOP operating
state. A role change between primary and backup CPU can occur during the firmware update.
The initial situation is assumed in the following: CPU 1 is the primary CPU. CPU 2 is the
backup CPU.
You must proceed in the following order for retentive data to be retained during a firmware
update:
1.
Switch CPU 2 to the STOP operating state.
2.
Run the update for CPU 2.
Please note: Ignore any pairing error (incorrect firmware) after CPU 2 startup.
3.
Switch CPU 1 to the STOP operating state.
4.
Now run the update for CPU 1.
5.
Switch CPU 1 to the RUN operating state.
6.
Switch CPU 2 to the RUN operating state.
WARNING
Risk of impermissible system states
The installation of the firmware update switches the CPUs to the STOP operating state and
therefore the redundant system to the STOP system state. STOP can impact the operation of
an online process or a machine.
Unexpected operation of a process or a machine can lead to fatal or severe injuries and/or to
material damage.
Ensure before installing the firmware update that the CPU is not controlling any active
process.
Installation of the firmware update for R/H-CPU displays
Firmware updates for the R/H-CPU displays are run in the RUN-Solo system state. A role
change between primary and backup CPU can occur during the firmware update. The initial
situation is assumed in the following: CPU 1 is the primary CPU. CPU 2 is the backup CPU.
337
Maintenance
13.4 Firmware update
S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD
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