Special functions of the CPU 410
9.13 Updating firmware in redundant mode
CPU 410 Process Automation/CPU 410 SMART
150 System Manual, 05/2017, A5E31622160-AC
7. Click "Execute".
The CPU in rack 1 is switched to STOP.
The new firmware is loaded to and activated in the CPU in rack 1.
8. Click "Continue".
The system switches to the CPU with the new firmware.
The new firmware is loaded to and activated in the CPU in rack 0.
The CPU in rack 0 is started.
The CPU in rack 0 is linked up and updated.
Both CPUs have updated firmware (operating system) and are in redundant operating state.
Note
Only the third number of the firmware versions of the master and standby CPU may differ by
1. You can only update to the newer version.
The constraints described in Chapter
System and operating states of the CPU 410
101) also apply to a firmware update in RUN.
Any set up access right is not canceled until you stop the SIMATIC Manager. You should
reset the access right once again to prevent unauthorized access. You reset the access right
in the SIMATIC Manager with the menu command PLC > Access Rights > Cancel.
Values retained after a firmware update
The following values are retained after a firmware update:
● IP address of the CPU
● Device name (NameOfStation)
● Subnet mask
● Static SNMP parameters
● Contents of the load memory
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