Siemens 6MD85, Manual

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Supervision of Device Firmware
The device firmware determines essentially the functionality of the device.
The following supervisions ensure the stable function of the device:
•
Supervisions of the data and version consistency
•
Supervision of the undisturbed sequential activity of the device firmware
•
Supervision of the available processor performance
When you start the device, load data via the interfaces and these supervisions of the device firmware will be in
effect during the continuous operation. Depending on the type and severity of error, the following error
responses will result:
Firmware failures where the device remains in operation.
The error is indicated. The signals/data affected by the failure are marked as invalid. In this way, the affected
protection functions can go into a secure state. Such errors are, for example, errors in time synchronization
(loss and errors).
Failures which can partially be corrected by a restart of the device. The device goes briefly out of
operation.
Such errors are, for example:
•
Device startup with faulty new parameter set. The old parameter set is still present.
•
Overloading of the processor
•
Program-sequence error
Fatal firmware error. The device goes permanently out of operation into a secure state (fallback mode).
Such errors are, for example:
•
Device startup with faulty new parameter set. No usable parameter set is present.
•
Device startup with version error
•
CFC-runtime error
•
3 unsuccessful restarts in a row
You can find the detailed description, in table form, of the fault responses at the end of chapter 8.8 Error
Responses and Corrective Measures . You will find corresponding corrective measures there.
8.5
Supervision Functions
8.5 Supervision of Device Firmware
980 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017