Technical data

Establishing an Online Connection and Making CPU Settings
18.4 Updating the Firmware
Programming with STEP 7
414 Manual, 05/2010, A5E02789666-01
Principle
Consequences of updating the firmware during operation
You can decide to activate the new firmware immediately after updating via an option in the update
dialog.
If you select this option, the station performs a restart like after POWER OFF/POWER ON. As
result, it may happen that a CPU remains in STOP mode or the processing of the user program is
adversely affected. You will need to take appropriate precautions in the operation of your plant to
anticipate and accommodate these conditions.
For example, during a restart all modules of the station will fail, including the existing F I/O.
The F I/O outputs a communication error to the interface during POWER OFF and switches off
safely - it is passivated. This passivation is not cleared by restarting the interface. You must
depassivate the modules individually. However, the safety-related applications will not run as a
result of this.