VW Multivan: Speedometer Signal Explained

Das Signal der Geschwindigkeit in VW Multivan.

Hat an das Paneel der Geräte den genauen Generator der Impulse angeschlossen hat den Hohlweg CAN des Reifens aufgezeichnet.

Log:
number (a)
00,000 320 8 12 00 FF (06 01) 00 01 00 ASCII:
00,000 320 8 12 00 FF D4 00 C0 01 00 ASCII:
00,000 320 8 12 00 FF EC 00 C0 00 00 ASCII:
00,000 320 8 12 00 FF FA 00 00 00 00 ASCII:

The conclusions:

Hz --- the number
1--- D4 00
1.1--- EC 00
1.150--- FA 00

56 --- F8 2E
56.05 --- 36 2F
57,150 --- 3E 30



The frequency is given by the formula: F = 0.00466 * (SWAP a).

The example:
text
F = 0.00466 * 0x2EF8; // See above for details.
F= 56 Hz.

The remaining values in the provided data determine the accuracy.