Readdatabyidentifier (HEX) service
Reading data based on identifiers
Example:
req=88 DA F1 F1 20 00 00 00 00
res=88 DA F1 0F F1 20 33 36 30
req=88 DA F1 0A 00 00 00 00 00
res=88 DA F1-2D 35 32
res=88 DA F1 00 22 45 58 00 00 00 00 00
0xf120 is referred to as Dataidentifier, which can also be referred to as did, and I translate it into data identifiers
2D 35 32 45 58 in the agreement is called the DataRecord, I translated it into a data record
Multiple dataidentifier can be sent together, that is, there can be multiple dataidentifier in a single request command
For example:
req=88 DA F1 0A 01 10 00 00
res=88 DA F1 0A 33 36 30
req=88 DA F1 0A 00 00 00 00 00
res=88 DA F1-2D 35 32
res=88 DA F1 8C 00 00 00
010A includes:
Engine coolant temperature (ECT)
Throttle Position (TP)
Engine speed (RPM) 2 BYTE
Manifold Absolute Pressure (MAP)
Mass Air flow (MAF)
Vehicle speed sensor (VSS)
Barometric pressure (Baro)
Calculated load value (load)
Idle air Control (IAC)
Accelerater Pedal Position (APP)
0110:battery positive Voltage (b +)
They should be stored in memory. Dataidentifier should be stored in fixed memory or temporarily stored in RAM.
Dataidentifier part of the agreement has been stipulated, the other mainly by the vehicle manufacturer or system supplier.
The definition of tin chai and big wood:
F1a6 ein Code
F1A5 Vehicle Model
F132 Engine test Time
Defined as follows:
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ISO14229 Read Data readdatabyidentifier (HEX) service based on identifier
