Online and diagnostic tools
15.6 Updating firmware
S7-1200 Programmable controller
1318 System Manual, V4.2, 09/2016, A5E02486680-AK
You can update the firmware of a connected CPU from the STEP 7 online and diagnostics
tools, by one of two methods:
● Updating from the CPU in the project
● Updating from the accessible devices in the project tree
Updating the firmware of a CPU in your project
To perform a firmware update, follow these steps:
1. Open the CPU in the Project Tree that corresponds to the connected CPU.
2. Open the Online and Diagnostics view of the connected CPU.
3. Select "Firmware update" from the "Functions" folder.
4. From the "Firmware loader" section, click the Browse button and navigate to the location
that contains the firmware update file. This could be a location on your hard drive to
which you have downloaded an S7-1200
(http://support.automation.siemens.com/WW/view/en/34612486/133100) firmware update
file from the Siemens Industry Online Support Web site
(http://support.industry.siemens.com).
5. Select a file that is compatible with your module. For a selected file, the table displays the
compatible modules.
6. Click the "Run update" button. Follow the dialogs, if necessary, to change the operating
mode of your CPU.
STEP 7 displays progress dialogs as it loads the firmware update. When it finishes, it
prompts you to start the module with the new firmware.
t choose to start the module with the new firmware, the previous firmware
remains active until you reset the module, for example by cycling power. The new firmware
becomes active only after you reset the module.
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