Maintenance
7-20
Distributed I/O Device ET 200M
EWA-4NEB780600602-06
Update in the Redundant System
If the update of the active IM 153-2 is performed via PROFIBUS-DP, the reset
which is performed afterwards automatically triggers the switchover between the
two IM 153-2 modules. We recommend that you then also update the second
IM 153-2 in the redundant system. The update must be performed separately for
each IM 153-2.
Restart After Update
Update via PROFIBUS-DP
In the STEP 7 user interface, it is possible to set whether
the IM 153-2 performs a reset automatically on completion of the update in
order to start up with the newly loaded firmware
Caution
If the ”Update Firmware After Loading” box is selected, there will be a brief station
failure of the ET 200M. If no precautions have been taken to counter this, the
update causes the CPU to enter STOP mode owing to rack failure.
the IM 153-2 is to be reset by switching off the supply voltage before the
IM 153-2 starts up with the new firmware when the supply voltage is switched
on again.
Update via MMC
On completion of the update, the IM 153-2 remains in a state which can only be
left by switching off the supply voltage. If the update was successful, the IM 153-2
starts up with the new firmware the next time the supply voltage is switched on.
Update Not Successful
If the update is unsuccessful, the IM 153-2 always starts up with the currently
loaded (”old”) firmware when the supply voltage is switched off and then on again.
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