Allen-Bradley SLC 500 1746-NI4 Installation Instruction page 21

Wiring Schematic for Single-ended Analog Input
Connections
When wiring single-ended analog input devices to the analog input card, the
number of total wires necessary can be limited by using the ANALOG
COMMON terminal. Note that differential inputs are more immune to noise than
single-ended inputs.
Power
+
Supply
-
SLC 500™ Analog I/O Modules
Transmitter
+
Signal
Transmitter
+
Signal
Transmitter
+
Signal
Transmitter
Supply Signal
+
Ground
NI4
IN 0+
IN 0-
ANL
IN1+
IN 1-
ANL
IN 2+
IN 2-
ANL
IN 3+
IN 3-
ANL
Publication 1746-IN008A-US-P
21