Special functions of the CPU 410
9.13 Updating firmware in redundant mode
CPU 410 Process Automation/CPU 410 SMART
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System Manual, 05/2017, A5E31622160-AC
9.13
Updating firmware in redundant mode
Requirement
You are operating the CPU 410 in a fault-tolerant system. Both Sync links exist and are
working. There are no redundancy losses. The REDF LED is not lit and both CPUs are in
redundant mode.
Note any information posted in the firmware download area.
Note
Checking the firmware update files (*.UPD)
The CPU checks the firmware update files (*.UPD) during the update process. If an error is
detected, the old firmware remains active and the new firmware is rejected.
For CPU access protection with password: in SIMATIC Manager, select a CPU of the fault-
tolerant system, then select "PLC > Access Rights > Setup" from the menu. Enter the CPU
access password.
Note
Redundancy error
There must not be a redundancy error, e.g. a faulty IM153-2, because the update may
otherwise lead to station failures.
Firmware update in two stages
The advantage of updating the firmware in two stages is that the fault-tolerant system only
operates in solo mode during the actual activation of the new firmware. The firmware is
loaded in redundant mode. This allows you to carry out the longer process of loading the
firmware beforehand in redundant mode at a suitable time, and launch the quicker activation
process later.
Proceed as follows to update the firmware of the CPUs of a fault-tolerant system in RUN:
1.
Open the station containing the CPU you want to update in HW Config.
2.
Select the CPU.
3.
Select the "PLC -> Update firmware" menu command.
4.
In the "Update firmware" dialog, select the path to the firmware update files (*.UPD) using
the "Browse" button.
After you have selected a file, the information in the bottom boxes of the "Update
firmware" dialog box will indicate the modules for which the file is suitable and as of which
firmware version.
5.
Select "Only load firmware" and click "Execute".
The firmware will be loaded to both CPUs. Both CPUs remain in redundant mode.
Loading can take several minutes.