when they are turned on or off.
Note:
With these profiles voltage is applied to the input through the built-in pull-up resistor Rpu. This allows not to
use an external "pull-up" resistor when operating with sensors which operates on "-" (by "ground").
R
pu
CPU_adc
R
1
R
2
UIN
C
1
CPU_pull-up
VDD
Figure 28. Connection of normally open (NO-) sensors
R
pu
CPU_adc
R
1
R
2
UIN
C
1
CPU_pull-up
VDD
Figure 29. Connection of normally closed (NC-) sensors
Profiles "Discrete NC+" and "Discrete NO+" allow to work with sensors, which, when turned on or off, close
the input to “+” supply voltage.
Summary of Contents for SIGNAL S-2654
Page 16: ...Figure 19 Figure 20...
