2. Commissioning
2-5
Festo P.BE-CPX-PNIO-EN en 1407c English
2.2 Address assignment
Note
The address space of a CPX terminal in the PROFI N ET net-
work is limited.
The bus node for PROFINET provides the CPX terminal with
an address space of up to 64 bytes for inputs (I) and
64 bytes f or outputs (O).
Each module of the CPX terminal occupies a cer tain num-
ber of I/O bits, I/O bytes or I/O words in the context of
module communication.
The number of occupied I/O bytes (of the respective mod-
ule) can be found in the foll owing tables (Tab. 2/2 to
Tab. 2/7).
Take account of this fact for the planning of your CPX ter-
minal.
Determine the number of assigned inputs and outputs prior
to co mmissioni ng or configuring the CPX termi nal . Tab. 2/8
pro vides help with this.
Use the configuration documents, the operator unit (CPX-
MMI) or the Festo Maintenance Tool (CPX-FMT) to determine
address assignment or terminal confi gurati o n.
In the operator unit, the individual modules of the CPX ter-
minal are displayed with the respective module identifiers.
Using the module identifier and the following tables, you can
determine the module type and, with it, the number of inputs
and outputs occupied by the module.
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