Connections and Wiring
23
NI-2100/3100/4100 - Hardware Reference Guide
Using the 4-pin Mini-Phoenix Connector for Data with External Power
When using the 4-pin 3.5 mm mini-Phoenix (female) captive-wire connector for data communication and power transfer, the
incoming PWR and GND cable from the 12 VDC-compliant power supply must be connected to the AxLink cable connector going to
the Integrated Controller. FIG. 11 shows the wiring diagram. Always use a local power supply to power the Integrated Controller
unit.
NOTE:
When you connect an external power supply, do not connect the wire from the PWR terminal (coming from the external device)
to the PWR terminal on the Phoenix connector attached to the Controller unit. Make sure to connect only the AXM, AXP, and GND wires
to the Controller’s Phoenix connector when using an external power supply.
Make sure to connect only the GND wire on the AxLink/PWR connector when using a separate 12 VDC power supply. Do not
connect the PWR wire to the AxLink connector’s PWR (+) opening.
DB9 Device Port: Connections and Wiring
FIG. 12 shows the connector pinouts for the rear RS-232/RS-422/RS-485 (DB9) Device Ports. These ports support most standard
RS-232 communication protocols for data transmission. This figure gives a visual representation of the wiring specifications for
the RS-232/422/485 Device connectors. Refer to the rear of the unit for more detailed connector pinout information.
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 as follows:
NI-2100 (Ports 1-3)
NI-4100/NI-3100 (Ports 1-7)
FIG. 11
4-pin mini-Phoenix connector wiring diagram (using external power source)
FIG. 12
RS-232/422/485 DB9 (male) connector pinouts for the rear Device Ports
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)
PWR (+)
GND (-)
Local +12 VDC
(coming from
To the Integrated Controller’s
To the external AxLink device
AxLink/PWR connector
power supply
an external
power supply)
Top view
Top view
AXP/
TX
AXM/
RX
GN
D -
AX
P/T
X
AXM/
RX
GN
D -
5
4
3
2
1
9
8
7
6
Male
DB9 Serial Port pinouts (male connector)
Pin 2: RX signal
Pin 3: TX signal
Pin 5: GND
Pin 7: RTS
Pin 8: CTS
RS-232
Pin 1: RX -
Pin 4: TX +
Pin 5: GND
Pin 6: RX +
Pin 9: TX -
RS-422
Pin 1: A (strap to 9)
Pin 4: B (strap to 6)
Pin 5: GND
Pin 6: B (strap to 4)
Pin 9: A (strap to 1)
RS-485
