Allen-Bradley SLC 500 1746-NI4 Installation Instruction page 9

Determining Your Power Requirements for a Fixed
Controller
IMPORTANT
Configuring Your Module
The NI4, NIO4I, NIO4V, FIO4I, and FIO4V analog modules have
user-selectable DIP switch settings, which allow you to configure the input
channels as either current or voltage inputs. The switches are located on the
analog module board. The following illustration shows the ON and OFF switch
settings. Switch orientation is also provided on the nameplate of the module.
ON - Configures channel for current input
OFF - Configures channel for voltage input
ATTENTION
!
Switch Settings for the 1746-NI4
The NI4 has 4 individual DIP switches that control the input mode of channels 0
through 3. A switch in the ON position configures the channel for current input.
A switch in the OFF position configures the channel for voltage input.
The 2-slot, SLC 500 fixed I/O expansion chassis (1746-A2)
will support only specific combinations of modules. If you
wish to use an I/O module in a 2-slot expansion chassis with
another SLC I/O or communication module, refer to the SLC
500 Analog I/O Modules User Manual, publication 1746-6.4
for valid combinations of modules.
Care should be taken to avoid connecting a voltage source to a
channel configured for current input. Improper module
operation or damage to the module can occur.
Current
Switch 1 = Channel 0
1 2 3 4
Switch 2 = Channel 1
O
N
Switch 3 = Channel 2
Switch 4 = Channel 3
Voltage
SLC 500™ Analog I/O Modules
Publication 1746-IN008A-US-P
9