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Connections and Wiring
27
NI-2000, NI-3000, NI-4000 Hardware Reference Guide
The table below provides information about the connector pins, signal types, and signal functions. This
table’s wiring specifications are applicable to the rear RS-232/422/485 Device Port connectors on the:
NI-2000 (Ports 1-3)
NI-4000/NI-3000 (Ports 1-7)
ICSNet Port: Connections and Wiring
The NI Controller must be equipped with the available ICSNet connectors for this functionality to be
active. The following tables show the signal and pinouts/pairing information:
RS-232/422/485 Device Port Wiring Specifications
Pin Signal Function
RS-232 RS-422
RS-485
1
RX-
Receive data
X
X
(strap to pin 9)
2
RXD
Receive data
X
3
TXD
Transmit data
X
4
TX+
Transmit data
X
X
(strap to pin 6)
5
GND
Signal ground
X
X
6
RX+
Receive data
X
X
(strap to pin 4)
7
RTS
Request to send
X
8
CTS
Clear to send
X
9
TX-
Transmit data
X
X
(strap to pin 1)
ICSNet RJ-45 Signals
Pin
Signal-Master
Signal-Device
1
TX +
RX +
2
TX -
RX -
3
N/A
N/A
4
GND
GND
5
N/A
N/A
6
N/A
N/A
7
RX +
TX +
8
RX -
TX -
RJ-45 Pinout Information (EIA/TIA 568 B)
Pin Wire Color
Polarity Function
1
Orange/White
+
Transmit
2
Orange
-
Transmit
3
Green/White
-
Mic
4
Blue
-
Ground
5
White/Blue
+
12 VDC
6
Green
+
Mic
7
White/Brown
+
Receive
8
Brown
-
Receive
TIA 568B