Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 119)

Publication 1747-UM003A-EN-P
Understanding Your SLC 500/1746 Control System B-27
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.
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 Input
Circuit
DC Com
Field Device
dc Power
Supply
+
–
Input
DC Input
Circuit
VDC
Field Device
DC Power
Supply
+
–
Input
DC Output
Circuit
VDC
Out
DC Com
Field Device
DC Power
Supply
+
–