Connections and Wiring
1
NetLinx Integrated Controller (No Master) - Operation Reference Guide
Connections and Wiring
Installing the Master or Hub Card
The NXC-ME260 NetLinx Master or any Hub Card can be installed in the NXI. The card mounts in a horizontal
position, through the master card slot on the rear panel of the NXI enclosure (see FIG. 3 on page 1).
To install a Master or Hub Card in an NXI:
1.
Discharge the static electricity from your body by touching a grounded metal object.
2.
Unplug all the connectors from the NXI.
3.
Remove the two screws that hold the front plate on the Master or Hub Card, and remove the front plate.
4.
Align the edges of the card with the guide slots inside the Master Card slot on the NXI.
5.
Slide the card about halfway into the slot.
6.
Inside the Master Card slot on NXI, locate the 6-pin control cable connector.
7.
Plug the connector from the NXI into the 6-pin terminal on the Master or Hub Card. This connector is keyed to
ensure correct orientation.
8.
Once the control cable is connected, gently slide the card all the way in until you feel the rear edge of the card
lightly snap into place.
9.
Re-apply power and other connections as necessary.
Preparing/connecting captive wires
1.
Strip 0.25 inch of wire insulation off all wires.
2.
Insert each wire into the appropriate opening on the connector according to the wiring diagrams and connector
types described in this section. Do not tighten the screws excessively; doing so may strip the threads and damage
the connector.
RS-232/422/485 Wiring Specifications
The following table lists the wiring specifications for the RS-232/422/485 connectors (ports 1-6).
Relay Connections and Wiring
You can connect up to 12 independent external relay devices to the Relay connectors on the NXI (port 7).
Connectors labeled A are for common; B are for output.
Each relay is isolated and normally open.
A metal commoning strip is supplied with each NXI to connect multiple relays.
RS-232/422/485 Wiring Specifications
Pin
Signal
Function
RS-232
RS-422
RS-485
1
GND
Signal ground
X
X
2
RXD
Receive data
X
3
TXD
Transmit data
X
4
CTS
Clear to send
X
5
RTS
Request to send
X
6
TX +
Transmit data
X
X (strap to pin 8)
7
TX -
Transmit data
X
X (strap to pin 9)
8
RX +
Receive data
X
X (strap to pin 6)
9
RX -
Receive data
X
X (strap to pin 7)
10
12 VDC
Power
optional
optional
