Print Page - KWP1281 block title 0x3D and block title 0xD7

Technical => Communication Protocols => Topic started by: Xearinox on October 24, 2015, 02:49:13 PM

Title: KWP1281 block title 0x3D and block title 0xD7
Post by: Xearinox on October 24, 2015, 02:49:13 PM

Hello.

Do somebody knowns meaning four bytes after KWP1281 block title 0x3D and block title 0xD7 ?

Thanks.

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: terminator on October 25, 2015, 04:07:24 PM

If I understand you right, this is CS byte.

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: Xearinox on October 26, 2015, 12:19:48 AM

Thanks for reply.

I mean four byte sequence after block title 0x3D and 0xD7.

Example(For sake of simplicity, complements removed):

Code:

Request:
07 01 D7 XX XX XX XX 03 (07 - block length, 01 - block counter, D7 - block title, 03 - block end)
Response:
07 02 3D YY YY YY YY 03 (07 - block length, 02 - block counter, 3D - block title, 03 - block end)

I need some definition of bytes XX and YY.

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: terminator on October 26, 2015, 02:42:27 AM

07 02 3D YY YY YY XX 03

YY - memory address
XX - memory size

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: Xearinox on October 26, 2015, 07:47:50 AM

Quote from: terminator on October 26, 2015, 02:42:27 AM

07 02 3D YY YY YY XX 03

YY - memory address
XX - memory size

Good day sir.

And for 0xD7 is also memory address and memory size ?

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: terminator on October 26, 2015, 08:38:36 AM

Sorry I don't know what D7 service is for. It's probably baud rate SID, but not sure.

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: Xearinox on October 26, 2015, 09:18:22 AM

OK.

Many thanks.

Do you have any additional info about 0x3D block title ?

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: terminator on October 26, 2015, 11:21:34 AM

Nope. All I have was downloaded from net so you can easily find it... even on the forum.

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: nodna on November 09, 2015, 06:36:42 AM

Yo dude, have a look

http://nefariousmotorsports.com/forum/index.php?topic=8274.0title=

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: Xearinox on November 10, 2015, 09:11:00 AM

Hmmm. :-[
Dude, do you know read?
I dont ask about block title names, I ask about 4-byte sequence next to this block title.

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: terminator on November 10, 2015, 07:26:54 PM

sorry I was inatentive, you are working with KWP1281, in that case nodna is right and this is should be security access.

Title: Re: KWP1281 block title 0x3D and block title 0xD7
Post by: Xearinox on November 10, 2015, 11:48:34 PM

This is fine,I know that this is security access, but I want know next 4 bytes.

NefMoto

Technical => Communication Protocols => Topic started by: Xearinox on October 24, 2015, 02:49:13 PM