Default Address
Summary: The Default Address is the address specified in the NMRA DCC Standards for multifunction decoders.
Purpose
If a multifunction decoder is reset, all Configuration Variables will be restored to their factory default configuration, including the primary and extended address. The NMRA DCC Standard specifies a retail multifunction decoder use a primary address of 3.[1]
Some decoders have multiple reset procedures, to allow a portion of the decoder's CVs to be restored to their default values.
Default Address
After a decoder reset, the primary address is set to its default value. Contrary to popular belief, any valid address can be the default address.
The Default Primary Address of 3 applies to multifunction decoders sold at retail only. [1]
Setting the Address
To set the address a Program Track is required. See the article on Addressing for more details regarding setting Primary / Extended Addresses.
ESU multifunction decoders can have their defaults defined by the user[2], including the address. This is possible when using their LokProgrammer software.