6
Diagnostics
Festo – GDCP-CMMO-ST-EA-SY-EN – 2017-05c – English
133
Diagnostic messages and fault clearance
23h
No index pulse found
Definable as:
F
/-/-
Diagnostic memory: optional
Error during homing: no zero pulse found. Encoder defective or incorrect parameterisation of the
encoder resolution.
Check the output signals of the encoder, in particular the index signal.
Check the parameterisation of the encoder resolution.
– Resettable: Cannot be reset; software reset is necessary.
Definable error response(s):
B
, C, E, F
24h
Drive function is not supported in open-loop oper
ation
Definable as:
F
/W/-
Diagnostic memory: optional
Function is not supported in this mode. The request has been ignored.
Change the operating mode or select a different drive function.
– If parameterisation as an error: Error can be acknowledged immediately.
Definable error response(s):
E
, F
– For parameterisation as a warning: The warning disappears if a switch is made to a valid drive
function.
25h
Path calculation
Definable as:
F
/-/-
Diagnostic memory: optional
The positioning target cannot be reached through the positioning options or the edge conditions.
During record sequencing: The end speed of the last record was higher than the target speed of the
following record.
Check the parameterisation of the affected records.
Also check the actual values of the previous positioning process at the switching point, if neces
sary, by using the trace function. The error may be caused by the actual velocity or the actual
acceleration being too high at the switching point.
– Resettable: Error can be reset immediately.
Definable error reaction(s): A
27h
Save parameters
Definable as:
F
/-/-
Diagnostic memory: optional
Error during writing of the internal permanent memory.
Execute the last operation again.
Check the following: Is an error present that can be reset first? When downloading a parameter
file, check if the version of the parameter file fits the firmware. If the error occurs again, please
contact Festo Service.
– Resettable: Error can be reset immediately.
Definable error response(s):
F
, G