OBD Mode 07 Multi-Frame

1
votes

I am trying to parse the message coming from an OBD device for Mode 07, and I am having a tough time with it. The following is the response I get from the device.

00 10 08 10 0A 47 04 01 07 02 07 00 10 08 21 03 07 43 07 00 00 00 00 18 06 47 02 01 02 D6 00 00 28 04 47 01 A2 45

Could someone please help clarify the different bytes? Ideally, I would like to identify that the response is multi-frame and how to identify the begin/end of the packet.

1
tcppacketobd-iielm327

1 Answers

0
votes

It shows the standard OBD-II PIDs as defined by SAE J1979. The expected response for each PID(hex) is given, along with information on how to translate the response into meaningful data.

Eg.

When using Bit-Encoded-Notation, quantities like D6 means bit 6 from data byte D. Each bit is numerated from 0 to 7, so 7 is the most significant bit and 0 is the least significant bit.

Check https://en.wikipedia.org/wiki/OBD-II_PIDs