Festo CTEU-DN, Описание, функции и обслуживание

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4. Commissioning
4-15
Festo P.BE-CTEU-DN-OP+MAINT-EN en 1206NH
4.3.3 Device-specific parametrisation
The CTEU-DN bus node has device-specific parameters, re-
ferred to as parameter objects, e.g. for setting the behaviour
of the connected I-port devices or for activating certain status
signals. These parameters can be set in the configuration
program (“network configurator”
“Parameters”).
The type and scope of the parameter objects available in
CTEU-DN depends on the connected I-port device.
Use the QuickConnect and Automatic Device Replacement
(ADR) DeviceNet functions or communication and program-
ming via Explicit Messaging, in order to set the required para-
meters (
Section 4.3.1 and Tab. 4/15).
In this case, the controller (PLC) automatically transmits the
programmed parameters to the bus node after switch-on. The
settings will then be retained even after a restart or device
replacement.
To use explicit messaging programming, you need the object
descriptions and addresses of the DeviceNet object model
Appendix A.4.
4.3.4 Behaviour of the inputs and outputs in fail state mode
In case of a control or communication interference, the net-
work participants, i.e. the bus nodes and the I-port devices,
assume fail state mode.
Possible causes of fail state mode:
– Interference in the control system (PLC/scanner)
– Network/fieldbus interruption (e.g. communication inter-
ference, broken cable)
– Interference to data telegrams.