CAN Bus database: Difference between revisions
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CAN bus mappings by OEM ECU and aftermarket device | CAN bus mappings by OEM ECU and aftermarket device | ||
=Megasquirt CAN ( MS2/MS3/MS3 Pro )= | |||
[[Megasquirt_CAN|Installation instructions]] | |||
*Baud Rate: 500K | |||
*Values in big endian format | |||
*Default base CAN id: 1520 | |||
{| class="wikitable" | |||
!colspan="7"|Megasquirt CAN | |||
|- | |||
!Channel | |||
!Units | |||
!CAN Id | |||
!Offset (bytes) | |||
!Length (bytes) | |||
!Conversion | |||
!Notes | |||
|- | |||
|RPM | |||
|RPM | |||
|1520 | |||
|6 | |||
|2 | |||
|(B6 * 256) + B7 | |||
| | |||
|- | |||
|IgnTiming | |||
|Degrees | |||
|1521 | |||
|0 | |||
|2 | |||
|((B0 * 256) + B1) / 10 | |||
| | |||
|- | |||
|MAP | |||
|kPa | |||
|1522 | |||
|2 | |||
|2 | |||
|((B2 * 256) + B3) / 10 | |||
| | |||
|- | |||
|MAT | |||
|F | |||
|1522 | |||
|4 | |||
|2 | |||
|((B4 * 256) + B3) / 10 | |||
| | |||
|- | |||
|EngineTemp | |||
|F | |||
|1522 | |||
|6 | |||
|2 | |||
|((B6 * 256) + B7) / 10 | |||
| | |||
|- | |||
|TPS | |||
|% | |||
|1523 | |||
|0 | |||
|2 | |||
|((B0 * 256) + B1) / 10 | |||
| | |||
|- | |||
|EngineTemp | |||
|F | |||
|1522 | |||
|6 | |||
|2 | |||
|((B6 * 256) + B7) / 10 | |||
| | |||
|- | |||
|Knock | |||
|% | |||
|1524 | |||
|0 | |||
|2 | |||
|((B0 * 256) + B1) / 10 | |||
|Indication of Knock input | |||
|} | |||
=BMW E46= | =BMW E46= | ||
Revision as of 07:12, 20 February 2015
CAN bus mappings by OEM ECU and aftermarket device
Megasquirt CAN ( MS2/MS3/MS3 Pro )
- Baud Rate: 500K
- Values in big endian format
- Default base CAN id: 1520
| Megasquirt CAN | ||||||
|---|---|---|---|---|---|---|
| Channel | Units | CAN Id | Offset (bytes) | Length (bytes) | Conversion | Notes |
| RPM | RPM | 1520 | 6 | 2 | (B6 * 256) + B7 | |
| IgnTiming | Degrees | 1521 | 0 | 2 | ((B0 * 256) + B1) / 10 | |
| MAP | kPa | 1522 | 2 | 2 | ((B2 * 256) + B3) / 10 | |
| MAT | F | 1522 | 4 | 2 | ((B4 * 256) + B3) / 10 | |
| EngineTemp | F | 1522 | 6 | 2 | ((B6 * 256) + B7) / 10 | |
| TPS | % | 1523 | 0 | 2 | ((B0 * 256) + B1) / 10 | |
| EngineTemp | F | 1522 | 6 | 2 | ((B6 * 256) + B7) / 10 | |
| Knock | % | 1524 | 0 | 2 | ((B0 * 256) + B1) / 10 | Indication of Knock input |
BMW E46
- Baud Rate: 500K
| BMW E46 (including M3) | ||||||
|---|---|---|---|---|---|---|
| Channel | Units | CAN Id | Offset (bytes) | Length (bytes) | Conversion | Notes |
| TPS | % | 809 | 6 | 1 | (B6 / 255) | |
| EngineTemp | C | 809 | 2 | 1 | (B2 * 0.75) - 48.373 | Convert to Farenheight: (temperatureC * 1.8) + 32 |
| OilTemp | C | 1349 | 5 | 1 | B5 - 48.373 | Convert to Farenheight: (temperatureC * 1.8) + 32 |
| RPM | 790 | 3-4 | 1 | ((B4 * 256) + B3) / 6.4 | ||
