Chapter 6 Input and Output Modules
6-
5
4) Example of external devices.
To connect with external device of DC output type into DC input module, wire depending on the type of the external
device as shown.
External device
Input module
Contact points
N
P
N
open
collector output type
NPN current output type
PNP current output type
Relay
IN
COM
Sensor
IN
COM +
Power for
sensor
Output
0V
+
IN
COM
-
Power for
sensor
Output
0V
+
Voltage output type
IN
COM +
Output
0V
+
Power for
sensor
7mA
Power for
sensor
IN
COM
+
Output
0V
+
+
Consta
nt
Same power for sensor
and input
7mA
7mA
7mA