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8. Programming the decoder
You can programm the configuration variables (CV) of the accessory
decoder WD-34 and the switching decoder SD-34 using a DCC digital
central unit. See the chapter in the manual of your central unit where the
byte wise programming of configuration variables (CVs) is explained.
When using a Motorola central unit you can set the decoder address
with a programming jumper. Changing the other decoder´s features is
neither necessary in layouts run in Motorola format only nor possible
with Motorola central units.
Programming decoder and accessory decoder addresses
The decoder address is set in the configuration variables (CV) or by
using the programming jumper. The accessory decoder address used to
send the switching commands result from:
Decoder address x 4 = highest address of the quadruple accessory
decoder address block
Name of CVs
Decoder
address
1 to 63
Decoder
address
(64 to 510)
Determining the input values for addresses higher than 64:
1. Divide the chosen address by 64. Round down the result to a whole number.
Input this value in CV#9.
2. Multiply the value set for CV#9 multiply by 64. Subtract this result from the
chosen address. Enter this value in CV#1.
Example: address 415:
1. 415 / 64 = 6,45 à CV#9 = 6
2. 415 – (6 x 64) = 31 à CV#1 = 31
Page 44
CV-
Input value
no.
(Default)
1
1, 2, 3, ... 63
(1)
9
0, 1, 2, 3 ... 7 Please notice: You have to input
Remarks and tips
NB: In addition, you have to
input the value "0" in CV#9.
a value in CV#1 as well.
SD-34 / WD-34
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