Profisafe; Safety Profile Profisafe - Festo CPX-F8DE-P Manual

1. System overview CPX-F8DE-P
1.2

PROFIsafe

1.2.1 Safety profile PROFIsafe

2
1
1
Standard telegram with embedded
PROFIsafe data
2
Embedded PROFIsafe telegram
Fig. 1/3: Telegram layout of the input module CPX-F8DE-P
Festo P.BE-CPX-F8DE-P-E N en 1610a English
Data exchange between the input module and the safety con­
troller is made with the safety-related bus profile PROFIsafe
from PROFIBUS or PROFINET IO.
The PROFIsafe telegrams are embedded in standard tele­
grams and are directed via the so-called black channel from
the safety controller to the input module. The black channel
extends from the field bus connection on the safety controller
via the bus node to the input module CPX-F8DE-P è Fig. 1/2.
There the PROFIsafe telegrams are processed by the input
module.
In addition to the process data, safety information is transmit­
ted in the PROFIsafe telegram. For that reason, the CPX-F8DE-
P assigns 6 bytes in the input image and 7 bytes in the output
image of the CPX terminal è Fig. 1/3; 3, 4, 5.
2
3
3
4
5
1 3
4 5
2 bytes for F usage data from the module
3 bytes for F usage data to the module
1 byte status or control byte
3 bytes CRC signature (CRC2)
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