Setting a long address on a Roco engine

Most Roco engines are fitted with a Zimo decoder. Those decoders are not supported by the ESU LokProgrammer software and it is therefore not very intuitive on how to change the address of a Roco engine. Here's how I do it.

I want to set engine BB 22332 - Roco 73878 to address 2232.

CV 17 & 18

 The long address is 4-digit long and stored in CV 17 and CV 18. I used the following calculator to compute the value for each CV: https://www.digitrax.com/support/cv/calculators/

For a long address of 2232, the values are:

• CV 17 = 200
• CV 18 = 184

I used the ESU LokProgrammer to "manually" write those CVs:

This step by itself is not enough. CV 29 also needs to be adjusted.

CV 29

In addition, bit 5 of CV 29 needs to be set to 1, so that the command station knows to use the long address instead of the short address stored in CV 1. CV 29 actually holds multiple settings, including the RailCom protocol. I used the following calculator: http://www.2mm.org.uk/articles/cv29%20calculator.htm

• CV 29 = 46 (previous value was 14)

ESU ECoS

Once the CVs 17, 18, and 29 are written, I can bring the engine to the layout and use the ECoS to add the engine including all the different sounds and functions.