FAQ:Cab Bus Addresses
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In addition to NCE, Wangrow's System One and PSI's DYNATROL also employed the Cab Bus protocol. There are two physical forms of the Cab Bus wiring. The Control bus or booster network uses a four-wire cable. Cab bus connections between the throttle and the command station or throttle network use a 6P4C or 6P6C RJ connector, which can use four or six conductors in the cable. The 6P6C is specifically for the Power Cab.
NCE also employs a Control Bus to connect boosters to the command station.
Systems Employing the Cab Bus
- North Coast Engineering (NCE)
- Wangrow Electronics Inc.
- PSI Dynatrol Digital
Cab Addressing
Cab addresses 0 and 1 are reserved.
- Cab 0 is the broadcast address of the command station.
- Cab 1 is reserved for future applications.
- Cab 2 is the Master cab.
- Other Cab addresses allow modification a Cab/Throttle's capabilities.
Available Cab Addresses are related to the NCE DCC System in use.
When assigning cab addresses, leaving the range above 48 for Cab Bus devices prevents the possibility of conflicts.
Power Cab
- Default is 2
- Valid throttle (Cab) addresses are 2 through 5
- Cab Id 5 only available with firmware 1.65 or better
- It will default to address 2 whenever plugged into a Power Cab Panel (PCP)
- Valid throttle (Cab) addresses are 2 through 5
- Addresses 6 and 7 are reserved
- Cab bus devices should use addresses 8 through 10
The NCE USB interface defaults to the Cab Bus Address of "3".
NCE Twin
- Default addresses are 0 and 1
- Addresses 2 through 7 are available for Cabs
- Cab bus devices should use addresses 8 through 10
Multifunction Decoders programmed on Throttle A will be set to an address of 3. Those programmed on Throttle B will be set to address 4.
Smart Booster
SB3/SB3A
- Valid Cab addresses are 2 through 5
- Cab Id 5 available with firmware 1.65 or better.
- Addresses 6 and 7 are reserved
- Cab bus devices should use addresses 8 through 10
SB5
- Valid Cab addresses are 2 through 7
- Cab bus devices should use addresses 8 through 10
Power Pro
Power Pro, PH-Pro, Powerhouse, CS02
- Addresses 1 though 63 are available for throttles
RB02
- Supports up to 16 Pro Cabs when using Radio
- Radio Equipped Pro Cabs should use addresses 2 through 17
- Other radio throttles can use 2 through 47, it is recommended to use 18 through 47 to reserve those addresses for the Radio equipped Pro Cabs.
Hint: Use addresses 18 – 49 for engineer cabs (Cab04/Cab05/Cab/06), keeping the lower addresses available for wireless Pro Cabs.
Available Addresses on the Cab Bus
Power Cab
- Maximum of 4 cabs supported, on addresses 2, 3, 4 and 5.
- Three additional Cab Bus devices are supported.
PH Pro
- Total supported is 63 (2 – 64)
- Includes any Cab Bus accessory devices
Pro Cab with Radio
- Addresses 2 – 17 are available.
- Intermediate radio cabs should be assigned to addresses 19 – 49