How To Perform A Firmware Update For The H-Cpu (As Of V4.5) - Siemens SIMATIC PCS 7 Service Manual

Ensuring Availability
3.3 Hardware update
Values received after the update of the firmware are retained
Once the CPU memory has been reset, the following values are retained:
● The parameters of the MPI interface (MPI address and highest MPI address).
● The IP address of the CPU
● The device name (NameOfStation)
● The subnet mask
● The static SNMP parameters
Updating a CPU with an operating system update card
You can find information on this at the following Internet address:
http://support.industry.siemens.com/cs/products
products?search=Firmware-Update
%20S7%20400%20CPU&dtp=Download&o=DefaultRankingDesc&)
3.3.3.2

How to perform a firmware update for the H-CPU (as of V4.5)

The firmware version can be changed using the online functionality as of firmware version
V4.5.x.
● Firmware update of an H system in RUN
● It is not possible to downgrade in RUN
Performing the firmware update of a H-CPU in RUN as of V4.5
Generally, a firmware version can only be upgraded to the next higher firmware version when
a firmware update in RUN is performed. It is not possible to downgrade in RUN. You should
also read the information provided in the version-specific description.
To update the firmware of the CPU of an H system in RUN, follow these steps:
1. Make sure that the H system is in the redundant state without errors.
2. Select one of the CPUs in HW Config or SIMATIC Manager.
3. Select the menu command PLC > Update Firmware.
The "Update Firmware" dialog box opens. Both CPUs are displayed with article number,
current firmware version, name and mounting position.
4. Select the firmware file to be loaded to the CPUs.
5. After confirmation with the "Run" button, a dialog with the following content opens:
"Caution ... all CPU data will be deleted. Do you want to continue?".
Click "Yes".
6. You can activate "Automatically continue" in the next dialog.
Click "Next". The firmware update starts in the "Run" state.
7. The firmware update is completed on both CPUs.
Check the operating mode and the active firmware version of both CPUs.
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(http://support.industry.siemens.com/cs/
Service Support and Diagnostics (V8.2)
Service Manual, 03/2016, A5E36200111-AA