FAQ:Cab Bus Connectors

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General information
DCC Categories	Throttle Network
Related Articles: Cab Bus FAQ:What is the Cab Bus
Manufacturers	NCE

The NCE Cab Bus can use a DIN Plug, a TRS Phone plug, or an RJ–12 plug.

• 

  DIN Plug

• 

  TRS Quarter Inch Phone Plug

• 

  Modular Connector

DIN Plug

• DIN Panel PDF
• UTP to DIN Panel

Using a 5 pin 180º DIN connector. From the left, with keyway at the bottom, going clockwise:

1. +12 Volts (nominal)
2. Ground
3. "A" lead of RS-485 signal
4. "B" lead of RS-485 signal

This is optional, can be used when wired for compatibility with the Lenz XpressNet

Three Pin (TRS) Phone Plug

• Tip: +12 Volts (7.5 to 16 Volts DC is OK)
• Ring: RS-485 "A" lead
• Sleeve: Ground

RJ-12

Main article: Modular Connector

This connection is used for the Cab Bus. The UTP (Utility Throttle Panel) has these connections.

1. Reserved
2. +12 VDC
3. A lead of RS-485 signal
4. B lead of RS-485 signal
5. Ground
6. Reserved

Only the 4 inner wires are used. This is the preferred interface.

It is very important to get the correct type of cable. Using a cable which flips connections will damage your equipment.