Festo CMMT-ST-SW Original Instructions Manual page 439

Diagnostics and fault clearance
– All active messages remain active (cannot be acknowledged).
– If acknowledged successfully, the reaction of the corresponding message is retracted (e. g. status
LED off).
– The error status is closed again if all of the errors have been acknowledged successfully.
If messages remain active, the cause must first be eliminated so that they can be cancelled internally.
Only cancelled messages can be acknowledged.
Serious errors cannot be acknowledged. In this case, the error status may be able to be closed by
switching the device on again (power OFF/ON). If the serious error immediately occurs again, please
contact Festo Service team (service required).
Information on troubleshooting è 9.4.6 Diagnostic messages with information for fault clearance.
Messages and errors are acknowledged via:
– The CTRL-EN digital input (trailing edge)
– The device profile of the fieldbus being used
– The plug-in è 2 CMMT-ST Plug-in
– The web server è 10 Web server
Error
No Error
Error reaction
Acknowledge signal
Fig. 102 Acknowledgment
Name Description
Error/No error Error/no error
Error reaction Reaction of the device
Acknowledge sig- Signal or command for acknowledgment (for acknowledgment with the digital
nal input CTRL-EN, a trailing edge is required.)
Event Diagnostic event, e. g. error
Festo — CMMT-ST-SW — 2019-02
Event
Cancelled Acknowledge
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