ESP and Standing Time: A Comprehensive Guide

Hi,

I want to install an ESP (Electronic Stability Program) system, which is designed for the Passat/Audi A6 platform, in my car. However, I don't have a CAN (Controller Area Network) dashboard. This ESP system requires vehicle speed information from the dashboard via the CAN bus (older ASR systems had this signal on a separate wire). Can anyone help me determine the CAN address and format of this speed information? I've captured data being transmitted by the CAN dashboard in a Passat B5, but I can't find where the speed data is located. Here's a snippet of the data the dashboard is sending on the motor CAN bus:
320 8 12 00 FF 00 00 00 00 00 249
420 8 87 FF FF FF 40 00 FF 00 2002
520 8 15 C0 00 83 80 ED 54 01 1997
5d0 6 80 34 50 80 18 41 999
5d8 8 15 04 00 3E 11 00 00 01 999

(I have a CAN dashboard emulator in development, and information about what the other data represents. This will be helpful also .)

thanks for any help or hint :)

/Tomi

nobody? <!-- s --><img src='{SMILIES_PATH}/icon_sad.gif' alt='' title='Sad'
/><!-- s --> I did an experiment and watched the data, and only this was changed:
520 15 C0 00 83 80 ED 54 0
4th byte (83) is incremented and actual value is sent only at IGN powerup, when is IGN on, value is not changed, new value is sent only after IGN off (some waiting) and IGN on, increment depend on time when IGN is off but I cannot find any relation between time and this value...
5th byte (80) is also incremented () but only when 4th byte reach FF and start from 00 again.
nobody not know what data is on address 520 or this forum is dead?