NAVTELECOM SMART S-2423, Руководство по эксплуатации, Страница: 17 / 25

2–10
кОм
+U
CPU_adc
R
1
R
2
UIN
C
1
Figure 23. Connection of normally closed (NC-) sensors to UIN1
Profiles "Discrete NC+" and "Discrete NO+" allow to work with sensors, which, when turned on or off, close the input
to “+” supply voltage.
CPU_adc
R
1
R
2
UIN
C
1
+U
R
pu
CPU_pull-up
VDD
Figure 24. Connection of normally open (NO+) sensors
CPU_adc
R
1
R
2
UIN
C
1
+U
R
pu
CPU_pull-up
VDD
Figure 25. Connection of normally closed (NC+) sensors