Festo CTEU-DN, Description, Functions And Maintenance

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6. Error handling
6-7
Festo P.BE-CTEU-DN-OP+MAINT-EN en 1206NH
2. Check whether Fail State is activated on the bus node (DIL
switch position).
Fail state mode off (reset):
The outputs are reset to “0” after fieldbus communication
is restored.
Fail state mode on (hold last state):
Once fieldbus communication is restored, the outputs
resume their state prior to failure.
6.1.6 Read out diagnostic messages via DeviceNet
Problem description: The previous checks are “fruitless”, i.e. provide no informa-
tion about the cause of the fault.
Remedy: Read out diagnostic messages via DeviceNet.
Requirement: The I-port devices connected to the bus nodes can offer
advanced diagnostic options.
Additional prerequisites:
– Diagnostic mode is activated:
Check the DIL switch setting.
– Network connection to the connected I-port device is
available:
X1 or X2-LED flashes green.
Proceed as follows:
Evaluate the diagnostic information in the process data (see
Section 5.3).