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Saturday, May 15, 2021

DCC Decoder Reset Values

Here is a summary table with reset values for the majority of the most popular DCC decoders. The DCC Wiki has much more information on these values that discusses do and don’t and options along with a great deal of other information. An example of some of this additional information is:

    To reset an Econami Decoder, there are options.

        Writing the following values to CV8 will do a complete reset or only reset groups of CVs:

          8 = Full CV reset
          9 = Reset CVs 1-128
        10 = Reset CVs 129-256
        11 = Reset CVs 1.257-1.512
        12 = Reset CVs 2.257-2.512

Here is the list of decoder resets by manufacturer. 

Multifunction Decoder Default Reset Values

Manufacturer

ID No. in CV8

CV to Write plus Value

Lenz Elektronic

99

CV8 = 33

NCE Corporation

11

CV30 = 2

Digitrax

129

CV8 = 8

ESU (LokSound)1

151

CV8 = 8

Train Control Systems (TCS)

153

CV8 = 8 or CV30 = 2

SoundTraxx: DSDLC, DSX, Tsunami3

141

CV30 = 2 CV8 = 8

QS Industries

113

See text below

Model Rectifier Corp (MRC)

143

CV125 = 1

Broadway Limited Imports (BLI)

38

CV8 = 8

Bachmann Trains 2

101

CV8 = 8

MTH

27

CV8 = 8

DCC Concepts

36

CV8 = 2 or 8

Kato Precision Industries

40

CV8 = 8

Hornby Hobbies Ltd

48

CV8 = 1

Gaugemaster

65

CV8 = 8

Atlas Model Railroad Products 

127

CV8 = 99 (depends on decoder)

ZTC

132

CV8 = 8

Zimo Elektronic

145

CV8 = 8

LGB

159

CV55 = 55

Arnold / Rivarossi

173

CV8 = 8















CV8 is the Manufacturer ID. This value is assigned by the NMRA. Writing any value to CV8 does not change its contents as it is a read-only variable.

1 ESU recommends using the programming track.
2 Bachman products may be equipped with Soundtraxx decoders
3 Programming track with booster required.

Notes

First generation Soundtraxx (Tsunami) and QSI decoders will require a Program Track Booster or a PowerPax.
Newer Soundtraxx Econami and Tsunamis (Tsunami2) do not require the program track booster.

MRC Decoders are not reliable for read back.

Some Lenz decoders may work with a value of 8 or 33 in CV8. Older decoders used 33.

The Atlas reset value depends on the decoder type installed.


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