18
Publication 1746-5.16
Single-Ended Wiring (Discrete Devices)
• This diagram shows the sensors operation from a common power supply.
Separate power supplies for each circuit can be used.
• The resistor (R1) value depends on the power supply value (VS). The table
below lists the resistor values for typical power supply values. These
resistors must be located at the module end of the cable.
• The pullup resistor (R2) value depends on the power supply value (VS).
The table below lists the resistor values for typical power supply values.
These resistors must be located at the sensor end of the cable.
Important:
VS Value
R1 Value
Maximum Output Leakage
+5V dc
no resistor needed
100 µA
+12V dc
1800 ohm 1/4W 5%
100 µA
+24V dc
4700 ohm 1/4W 5%
100 µA
VS Value
R1 Value
Maximum Output Leakage
+5V dc
150 ohm 1/4W 5%
6.3 mA
+12V dc
1800 ohm 1/4W 5%
1.5 mA
+24V dc
4700 ohm 1/4W 5%
1.2 mA
1234
A(+)
A(±)
B(+)
B(±)
Z(+)
Z(±)
R1
R2
proximity sensor
with sourcing output
photoelectric sensor with open
collector sinking output
solid-state
switch
(5V output)
Power
Supply
Module Inputs
SW1
ON
OFF
(All switches OFF)
VS
OUT
COM
VS
OUT
COM
VS
OUT
COM
+VDC
COM