8400 BaseLine D | Software Manual
Error management
Basics on error handling in the controller
120
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Firmware 03.00 - DMS EN 5.0 - 07/2009
7
Error management
7.1
Basics on error handling in the controller
In the controller many functions are integrated which detect errors and thus
protect the device against damage or overload, e.g. short circuit detection, Ixt overload
detection, overtemperature detection, etc.
detect a maloperation by the user, e.g. memory module missing.
output a warning signal if desired, e.g. if the speed is too high or too low, etc.
Depending on the importance, this error detection in the device responds very fast (e.g.
short circuit detection < 1 ms) or in a slower cycle (e.g. temperature monitoring approx.
100 ms).
Furthermore, depending on their importance, some device errors can be configured with
respect to their effect on the behaviour of the controller (e.g. for user errors which may
occur):
All functions provided with an error detection (e.g. the motor control) supply information
to an error handler which is processed every 1 ms and which evaluates all the information.
During this evaluation
the current error is generated
the controller is set to the respective error status (e.g. "fault").
These error data serve to diagnose errors systematically and contain the following
information:
1. the error type, e.g. warning
2. the subject area
3. the error identification number within the subject area
Together all types of information form the real error number which is unique in the whole
device system.
In addition to the control of the device state by the error handler, a logbook function
records the errors and their history.
