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Programming Manual BasicDisplay CR0452 v03.02
05 / 2018
Diagnosis and error handling
Diagnosis
6
Diagnosis and error handling
Diagnosis ..............................................................................................................................................186
Fault ......................................................................................................................................................186
Response to system errors...................................................................................................................187
CAN / CANopen: errors and error handling..........................................................................................187
19598
The runtime-system (RTS) checks the device by internal error checks:
• during the boot phase (reset phase)
• during executing the application program
→ chapter
O
perating states
(
In so doing a high operating reliability is provided, as much as possible.
>
6.1
Diagnosis
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During the diagnosis, the "state of health" of the device is checked. It is to be found out if and what
→faults are given in the device.
Depending on the device, the inputs and outputs can also be monitored for their correct function.
- wire break,
- short circuit,
- value outside range.
For diagnosis, configuration and log data can be used, created during the "normal" operation of the
device.
The correct start of the system components is monitored during the initialisation and start phase.
Errors are recorded in the log file.
For further diagnosis, self-tests can also be carried out.
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6.2
Fault
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A fault is the state of an item characterized by the inability to perform the requested function, excluding
the inability during preventive maintenance or other planned actions, or due to lack of external
resources.
A fault is often the result of a failure of the item itself, but may exist without prior failure.
In
→ISO 13849-1 "fault" means "random fault".
