NOTICE!
Loss of function due to incorrectly connected or impermissible connecting cables.
•
Always connect the connecting cables for the modules to the connection [XF10].
•
Always connect the forwarding of the connecting cables to the connection [XF20].
•
Only use permissible connecting cables from the Festo catalogue
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Behaviour in the event of incorrect configuration after restart
When establishing a connection with the higher-level controller, the configuration is checked for the
following criteria, depending on the network protocol of the interface:
–
Total number of input and output bytes
–
Module codes and sequence of modules
–
Length and format of the start-up parameterisation
If there are deviations, the connection to the higher-level controller is refused and a network-specific
error message is generated.
Behaviour when changing the configuration during operation
–
If a module is removed during operation, no process data is transferred to the higher-level control-
ler for this module and all subsequent modules. The failure of the module is signalled via a dia-
gnostic message and, if necessary, network-specific status bytes in the process data.
–
If an additional module is added after the connection is established with the higher-level control-
ler or an existing module is exchanged, this module is not included in the active configuration and
no data exchange with this module is possible.
In order for changes to the configuration to become active, the system must be restarted (switched
off/on).
System communication and address assignment
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Festo — CPX-AP — 2019-06
