6
Diagnostics
Festo – EXCM-30/-40-...-PF-EN – 1603 – English
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6
Diagnostics
6.1
Diagnostic memory
A maximum of 200 error messages are stored securely against power failure in the ring buffer of the
diagnostic memory.
The diagnostic memory can be read and erased via the Festo Configuration Tool (FCT). Erasing gener
ates a “switch-on event” (malfunction 0x3D). The malfunction counter is not reset thereby.
6.2
Error messages
Malfunctions are subdivided into errors, warnings and information. Error messages of the controller
that can be parameterised can be defined in the FCT (parameter-side error management) as error, warn
ing or information.
Messages with a higher priority interrupt messages with a lower priority. As malfunctions
can occur and be acknowledged faster than they can be displayed on the 7-segment dis
play, it may be the case that not all malfunctions are displayed. Read the diagnostic
memory (
è
6.1 Diagnostic memory) in order to view all messages.
Error (high priority)
An error always has an error response as a result (
è
6.3.1 Error responses). The error response to
some errors can be parameterised via the FCT (parameter-side error management). Error messages
interrupt messages with a lower priority and must be acknowledged. Errors cannot be acknowledged
until their cause has been remedied.
Warning (medium priority)
Warnings have no influence on the drive behaviour and do not have to be acknowledged. But the cause
of the warning should be eliminated so it will not result in an error.
Warnings have a lower priority than errors and are not displayed if they occur when an error is already
displayed. Otherwise, they are displayed twice in succession. Warnings do not have to be acknow
ledged.
Information (low priority)
If an error message has been parameterised as “information”, it is not displayed on the 7-segments
display. But dependent on the parameterisation, it is stored in the diagnostic memory
(
è
