Basic Programing
Tsunami2 Electric User’s Guide
17
Basic Programming
Configuring the Address
Like all DCC decoders, Tsunami2 responds to primary address 3
right out of the package. Address control CVs allow you to set
primary and extended addresses or your choice, which can be
useful when matching the decoder’s address with the number on
the locomotive, for instance.
Setting Addresses
Tsunami2 recognizes either the primary address (also known as the short address) in CV 1 or
the extended (long) address in CVs 17-18 (Extended Address). Whether you use the primary or
extended address will first depend on whether or not your DCC system uses extended
addressing (not all of them do, so if in doubt, see your command station owner’s manual.)
Second, it will depend on your preferences and the numbering scheme you use for setting your
decoder addresses. The extended address has the advantage that you can use all four digits of
a locomotive’s road number for the decoder address making it easy to remember. Be aware that
some DCC systems do not support the full range of available addresses.
Programming Notes: You can set the primary and extended addresses in Service Mode at any
time. Some DCC systems also allow you to set the address in Operations Mode according to
the following restrictions:
If the decoder’s primary address is enabled (bit 5 of CV 29 set to 0), only the extended
address can be changed in Operations Mode.
If the decoder’s extended address is enabled (bit 5 of CV 29 set to 1), only the primary
address can be changed in Operations Mode.
Primary Address
Enter a value from 1 to 127 into CV 1 to set the primary address. All SoundTraxx decoders are
set to primary address 3 by default.
Extended Address
The extended address is actually made up of two CVs, 17 and 18. Unless you are an
experienced user, you should not try to program these CVs individually as a specific protocol is
required in order for the decoder to accept the new data (see the
Tsunami2 Diesel Technical
Reference
for details). Since most command stations that support extended addressing will
automatically generate the correct protocol, simply follow their instructions for setting the
extended address.
After setting the extended address, set bit 5 of CV 29 (Configuration Data 1) to 1 to enable its
usage. If bit 5 of CV 29 is set to 0, the decoder will continue to respond to the primary address.
Continue to “Configuring the Decoder” for more information about CV 29.
Address Control CVs
CV 1: Primary Address
CVs 17-18: Extended Address