Rockwell Automation 1747-L40 SLC 500 Fixed Hardware Style - Manual (Page 66)

Chapter 5
Wiring Your Control System
5–3
Sinking Device with Sourcing Input Module Circuit
The field device is on the negative side of the power supply between the
supply and the input terminal. When the field device is activated, it sinks
current from the input circuit.
DC POWER
SUPPLY
+
_
Input
VDC
DC
INPUT
CIRCUIT
I
FIELD DEVICE
Sinking Device with Sourcing Output Module Circuit
The field device is on the negative side of the power supply between the
supply and the output terminal. When the output is activated, it sources
current to the field device.
DC POWER
SUPPLY
+
_
VDC
DC Com
DC
OUTPUT
CIRCUIT
I
Out
FIELD DEVICE
Sourcing Device with Sinking Output Module Circuit
The field device is on the positive side of the power supply between the
supply and the output terminal. When the output is activated, it sinks current
from the field device.
DC POWER
SUPPLY
+
_
VDC
DC Com
DC
OUTPUT
CIRCUIT
I
Out FIELD DEVICE