Specifications

Connections and Wiring
38
NetLinx Integrated Controllers
Input/Output (I/O) Port: Connections and Wiring
The I/O port responds to either switch closures, voltage level (high/low) changes, or it can be used
for logic-level outputs.
You can connect up to eight devices to the I/O connectors on the NI-4x00/3x00 Series (four on the
NI-2000 and NI-2100) (FIG. 27). A contact closure between the GND and an I/O port is detected
as a Push.
 When used for voltage inputs, the I/O port detects a low signal (0 - 1.5 VDC) as a Push,
and a high signal (3.5 - 5 VDC) as a Release (this IO port uses 5V logic but can handle up
to 12V without harm).
 When used for outputs, the I/O port acts as a switch to GND and is rated for 200 mA @
12 VDC. This device can use up to 8 I/O ports (NI-4x00/3x00) and up to 4 I/O ports
(NI-2x00).
 The PWR pin provides +12 VDC @ 200 mA and is designed as a power output for the
PCS Power Current Sensors, VSS2 Video Sync Sensors (or equivalent).
 The GND connector is a common ground and is shared by all I/O ports. A common
ground is shared with I/O ports 1 - 8 (NI-4x00/NI-3x00) or with I/O ports 1 - 3
(NI-2x00).
FIG. 27 INPUT/OUTPUT connector (male)
I/O Port Wiring Specifications
NI-4x00 and NI-3x00
I/O Port Wiring Specifications
NI-2x00
Pin Signal Function Pin Signal Function
1 GND Signal GND 1 GND Signal GND
2 I/O 1 Input/Output 2 I/O 1 Input/Output
3 I/O 2 Input/Output 3 I/O 2 Input/Output
4 I/O 3 Input/Output 4 I/O 3 Input/Output
5 I/O 4 Input/Output 5 I/O 4 Input/Output
6 I/O 5 Input/Output 6 12 VDC PWR
7 I/O 6 Input/Output
8 I/O 7 Input/Output
9 I/O 8 Input/Output
10 12 VDC PWR
I / O (Port 17)
4
+12V
78 6
5
GND
2
3
1
I / O (Port 9)
4
+12V
2
3
1
GND
NI-4x00/NI-3x00 I/O connector
configuration (Port 17)
NI-2x00 I/O connector
configuration (Port 9)