SoundTraxx SoundCar Users Guide - Manual (Page 15)

Tsunami SoundCar User’s Guide Page 11
Step 1: Configuring the Address
The first CVs you may want to change are those that set the SoundCar’s
address:
CV 1, Primary Address Control
CVs 17 and 18, Extended Address
The SoundCar DSD can be set up to recognize either the primary (“short”)
address or the extended (“long”) address. The primary address may be
programmed with any value from 1 to 127, while the extended address may
be programmed with any value from 0001 to 9999. Whether you choose to
use the primary or extended address will first depend upon whether your
DCC system allows extended addressing (not all of them do, so when in
doubt, refer to your system’s user manual). It will also depend upon your
preferences and your personal numbering scheme for setting decoder
addresses. One advantage of using the extended address is that since it
uses four digits, you can use a model’s road number as the decoder address,
making it easy to remember.
Note: Both the primary and extended addresses can be changed at any time
using Service Mode programming.
Primary Address
To use the primary address, set CV 1 to the desired address from 1 to 127.
Some DCC systems will also allow the decoder address to be modified in
Operations Mode (consult your system manual for details). Please note that
when programming in Operations Mode, the following restrictions apply:
• If the decoder’s primary address is enabled (i.e., bit 5 is set to 0 in
CV 29), only the extended address may be changed using Operations
Mode programming.
• Alternately, if the decoder’s extended address is enabled (i.e., bit 5 is
set to 1 in CV 29), only the primary address may be changed using
Operations Mode programming.
Extended Address
The extended address is made up of two CVs, 17 and 18. Programming
these CVs is only advisable for experienced users, as a specific protocol
is required in order for the DSD to accept the new data (see the Tsunami
SoundCar Technical Reference for details). Most command stations that
support extended addressing will automatically generate the correct protocol;
simply follow their instructions for setting the extended address.
Once the extended address is stored in CVs 17 and 18, bit 5 of CV 29
(Configuration Register 1) must be set to 1 in order for the decoder to
recognize the extended address format. If bit 5 of CV 29 is set to 0, the
decoder will continue to respond only to its primary address. For more
information related to CV 29, see the next section, “Configuring the Decoder.”
Basic Programming