Node Controller Overview
General Purpose Digital I/O
48
MagneMotion
Rockwell Automation Publication MMI-UM013B-EN-P - April 2020
for the digital I/O equivalent circuits
and
for the power specification.
The digital inputs can be wired as a sink, where a +5–24V DC signal is wired to the appropri-
ate digital input and COM is connected to the return (minus) side of the signal as shown in
. The digital inputs can also be wired as a source, where +5–24V DC is wired to the
COM and the appropriate input is wired through the signal to ground as shown in
.
The digital outputs can only be wired as a sink, where a +5–35V DC supply is wired through a
load and sunk when the digital output in use is turned on by the node controller as shown in
NC-12 Digital I/O Connection
The NC-12 node controller provides 16 optically isolated digital input bits and 16 optically
isolated digital output bits. See
for the location of these connections on the node
for the digital I/O equivalent circuits
and
for the power specification.
The digital inputs can be wired as a sink, where a +3–24V DC signal is wired to the appropri-
ate digital input and COM is connected to the return (minus) side of the signal as shown in
. The digital inputs can also be wired as a source, where +3–24V DC is wired to the
COM and the appropriate input is wired through the signal to ground as shown in
.
NOTE:
The GND pin on the node controllers is not used for the digital inputs even though
there is a spring clamp on the “Inputs” side for GND.
The digital outputs can only be wired as a sink, where a +5–35V DC supply is wired through a
load and sunk when the digital output in use is turned on by the node controller as shown in
To make digital I/O connections, use 12–26 AWG insulated wires and connect them to the
appropriate input or output bits and to the respective COM, GND, or VDD connections. Insert
a small flat-blade screwdriver into the connector release slot above the appropriate connector
as shown in
. Rotate it to open the connector and insert the wire. Once the wire is
fully seated, release and remove the screwdriver. Make sure that the connector blades are
making direct contact with the wire and are not in contact with the insulation.
Figure 3-3: Digital I/O Connections
Connector Release
Connector
Connector Release
Connector