Festo CPX-F8DE-P, Manual

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Festo — CPX-F8DE-P — 2022-10d
System overview CPX-F8DE-P
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Fig. 2: Communication between safety controller and safety modules via PROFIsafe
2.2 PROFIsafe
Data are exchanged between the input module and the safety controller with the safety-related
PROFIsafe bus profile from PROFIBUS or PROFINET IO.
2.2.1 PROFIsafe safety profile
The PROFIsafe telegrams are embedded in standard telegrams and are directed from the safety
controller to the input module via the so-called black channel. The black channel extends from the
fieldbus connection on the safety controller to the input module CPX-F8DE-P via the bus node
è Fig.
2. The input module processes the PROFIsafe telegrams there.
In addition to process data, the PROFIsafe telegrams also transmit safety information. The CPX-F8DE-P
therefore occupies 6 bytes in the input image and 7 bytes in the output image of the CPX terminal
è Fig. 3;
3
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4
,
5
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