Festo FB13 - Page 186

8-input module NPN
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Sensor 2 (I
x+1
) Sensor 1 (I
x
)
Pin
3
4
1
Logic
identifi-
cation I
x
PLC/I-PC
I
x+1
24 V ± 25 %
0 V
3: 0 V
4: Input I
x
2: Input I
x+1
1: + 24 V
Two-way distributor
(T piece e.g.
Festo DUO cable)
Logic identi-
fication
I
x + 1
PLC/I-PC
I
x
green
LED I
x
green
LED
Ix + 1
2
Internal
structure
Pin
assignment
Circuitry
example
Fig. A/8: Circuitry example: 8-input module NPN
VIFB13 - 03/05 Appendix A
9701 NH A-17