Johnson Controls NIE39 Installation Instructions Manual page 6

Follow these guidelines when wiring an NIE:
• Route the supply power wires and communication cables at least 50 mm (2 in.) away from the vent slots on the
sides of the NIE housing.
• Provide slack in the wires and cables. Keep cables routed neatly around the NIE to promote good ventilation,
LED visibility, and ease of service.
Wiring the NIE for N2, MS/TP, Modbus RTU, or L
1. Connect the Ethernet cable to the RJ-45, 8-pin Ethernet port on the NIE shown in
2. If using an external modem, connect the modem to USB A using the proper cable.
3. Connect the Building Automation System (BAS) network cables to the appropriate ports.
• For an N2, MS/TP, or Modbus RTU network, connect the 3-wire bus cable to the removable 4-terminal blue
plug labeled FC Bus
Note: If an N2 or MS/TP is connected to the NIE, you must set the NIE EOL switches to the proper positions.
See the
• For L W compatible networks, connect the 2-wire cable from the L
ON ORKS
removable 3-terminal blue plug labeled LON
Note: The L
ON
4. For Modbus RTU Protocol using the RS232C A or RS232C B serial port, use a cable to connect the
RS-232/RS-485 converter to the RS232C A or RS232C B serial port on the NIE.
NIE39/NIE49 Installation Instructions
(Figure 4).
Setting the End-of-Line Switch
W network trunk is available on the NIE3920-x and NIE4920-x models only.
ORKS
Figure 4: FC Bus Terminal Block and Wiring Connections
Figure 5: L W Network Terminal Block and Wiring Connections
ON ORKS
W Protocol
ON ORKS
section.
(Figure 5).
Figure 1.
W network trunk to the
ON ORKS
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