Festo — CPX-F8DE-P — 2022-10d
System overview CPX-F8DE-P
43
2.3.3.11 Function mode 10 – coded identifier
Evaluation of a coded identifier by DIL switch in manifold block CPX-AB-ID-P.
Prerequisite for use of the coded identifier: all channel pairs are set to function mode 10 via the
output image.
Fig. 17: Function mode 10 – coded identifier
Setting coded identifier
1. Set the desired identifier with switches 1 to 7. Then use values from 1 to 126.
2. If you have an odd number of switches 1 to 7 set to ON: also set parity bit (switch 8) to ON.
Input image
In the input image, a 0 is always output instead of the parity bit, so that the set identifier in the safety
control can always be used directly.
Functional safety
–
PL e, Cat. 3/SIL 3
with certified switch of an appropriate safety classification or independent tried and tested
switches in accordance with EN 13849-2, Table D.3,
and with protection of the application against simple manipulation.
The manifold block CPX-AB-ID-P meets these requirements for functional safety without any supple-
mentary measures.
2.3.4
Use of clock signals
Clock signals are used to monitor the wiring on the input channels of the input module.
Specific clock signals are made available for the relevant input channel via T0, T2, T4 and T6:
–
to detect cross circuits between inputs and clock signal connections for function modes with clock
signals or diagnostics
–
to detect short circuits between the inputs/clock signal connections and sensor wiring.