Festo CPX-FB33 Manual page 113

2. Commissioning
Festo P.BE-CPX-PNIO-EN en 1407c English
Note
Observe that the data field size set with the DIL switch 2
( Tab. 1/4) must be the same size or larger than the
data field size that you set in your control system.
The bus node is thus configured as remote controller.
Additional settings, such as change of the PROFINET device
name or IP address, can be made just as in the Remote I/O
operating mode.
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