CAN Bus (Controller Area Network) - Techwatch: Satellite TV forums, FTA, Cable, Hardware, & Tech forums

ChilliRat · 01-04-06, 04:18 PM

While i was in the pub with Delambo the other night we talked about the CAN bus amongst other things. Chatting about girls would have been more interesting but you know how conversations drift after a pint or two...

Anyway, as some of you may know, CAN busses are rapidly replacing the wiring loom in most modern cars. A CAN (Controller Area Network) bus is a two wire differential twisted pair bus that is extremely resistant to electromagnetic noise, hence its suitability to the automotive industry (HT leads are very noisy). In fact it was designed by Bosch specifically for the automotive industry but has been adopted by other fields.

Anyway, for those Auto Electricians and other curious individuals, a very good insight can be found on the Wikipedia site.

http://en.wikipedia.org/wiki/CAN_bus

the entry also has some very useful links to the Bosch standards, and other tutorials.

Sorry my first post is not more fun but i thought Delambo might be interested in this. Maybe something a little more fun another time.

delambo · 01-04-06, 04:39 PM

An interesting read mate, will come in handy some time. Made it a sticky.

jakeyfly · 11-04-06, 01:26 AM

nice site mate, here is a bit more to add to that

morpheous · 25-03-07, 02:16 AM

I have a self study in pdf form for any moderators interested.
Audi and others use the CAN for engine gearbox and immobiliser called drive CAN which runs faster than the infotainment CAN. MOST bus is a fibre optic system used on the new A6 and A8 for the DVD, Phone, CD, radio and sat nav.
LIN bus is a cheaper system used alongside the other systems.
The A8 has 74 odd ecus fitted, the use of CAN reduces the weight of wiring looms needed.

delambo · 25-03-07, 09:52 PM

Quote:

Originally Posted by morpheous

I have a self study in pdf form for any moderators interested.
Audi and others use the CAN for engine gearbox and immobiliser called drive CAN which runs faster than the infotainment CAN. MOST bus is a fibre optic system used on the new A6 and A8 for the DVD, Phone, CD, radio and sat nav.
LIN bus is a cheaper system used alongside the other systems.
The A8 has 74 odd ecus fitted, the use of CAN reduces the weight of wiring looms needed.

I'd be really interested in seeing that if you dont mind mailing it to me.

kristian@sapsuk.com

Cheers.

morpheous · 25-03-07, 10:51 PM

You have mail.

jakeyfly · 01-04-07, 01:27 AM

Quote:

Originally Posted by morpheous

I have a self study in pdf form for any moderators interested.
Audi and others use the CAN for engine gearbox and immobiliser called drive CAN which runs faster than the infotainment CAN. MOST bus is a fibre optic system used on the new A6 and A8 for the DVD, Phone, CD, radio and sat nav.
LIN bus is a cheaper system used alongside the other systems.
The A8 has 74 odd ecus fitted, the use of CAN reduces the weight of wiring looms needed.

Hi morpheous, good to see a clued up vag tech on the forum. as im a sucker for CAN i would like to see your info if its still on offer
cheers

morpheous · 02-04-07, 01:19 AM

You have a PM.

Jimmybomb · 16-06-07, 05:10 PM

Great system like you have said with less wires, weight and reliability
But a total nightmare to diagnose a system with 20+ ecu's.
Gone are the days of using the avo. Not always but some of the time
its shotgun diagnosis with the old get one off that sales car in the yard
and swap it.

01-04-06, 04:18 PM	#1 (permalink)
ChilliRat Junior Member Join Date: Mar 2006 Posts: 16 Thanks: 0 Thanked 0 Times in 0 Posts	CAN Bus (Controller Area Network) While i was in the pub with Delambo the other night we talked about the CAN bus amongst other things. Chatting about girls would have been more interesting but you know how conversations drift after a pint or two... Anyway, as some of you may know, CAN busses are rapidly replacing the wiring loom in most modern cars. A CAN (Controller Area Network) bus is a two wire differential twisted pair bus that is extremely resistant to electromagnetic noise, hence its suitability to the automotive industry (HT leads are very noisy). In fact it was designed by Bosch specifically for the automotive industry but has been adopted by other fields. Anyway, for those Auto Electricians and other curious individuals, a very good insight can be found on the Wikipedia site. http://en.wikipedia.org/wiki/CAN_bus the entry also has some very useful links to the Bosch standards, and other tutorials. Sorry my first post is not more fun but i thought Delambo might be interested in this. Maybe something a little more fun another time.

01-04-06, 04:39 PM	#2 (permalink)
delambo Super Moderator Join Date: Sep 2005 Location: infront of my pc Posts: 521 Thanks: 0 Thanked 3 Times in 3 Posts	Re: CAN Bus (Controller Area Network) An interesting read mate, will come in handy some time. Made it a sticky. __________________ If it seems too good to be true, it probably is.

11-04-06, 01:26 AM	#3 (permalink)
jakeyfly Super Drunk Moderator Join Date: Oct 2005 Posts: 260 Thanks: 0 Thanked 0 Times in 0 Posts	Re: CAN Bus (Controller Area Network) nice site mate, here is a bit more to add to that

25-03-07, 02:16 AM	#4 (permalink)
morpheous Junior Member Join Date: Mar 2007 Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post	Re: CAN Bus (Controller Area Network) I have a self study in pdf form for any moderators interested. Audi and others use the CAN for engine gearbox and immobiliser called drive CAN which runs faster than the infotainment CAN. MOST bus is a fibre optic system used on the new A6 and A8 for the DVD, Phone, CD, radio and sat nav. LIN bus is a cheaper system used alongside the other systems. The A8 has 74 odd ecus fitted, the use of CAN reduces the weight of wiring looms needed.

25-03-07, 10:51 PM	#6 (permalink)
morpheous Junior Member Join Date: Mar 2007 Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post	Re: CAN Bus (Controller Area Network) You have mail.


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02-04-07, 01:19 AM	#8 (permalink)
morpheous Junior Member Join Date: Mar 2007 Posts: 9 Thanks: 0 Thanked 1 Time in 1 Post	Re: CAN Bus (Controller Area Network) You have a PM.

16-06-07, 05:10 PM	#9 (permalink)
Jimmybomb Member Join Date: Jun 2007 Location: East midlands Posts: 67 Thanks: 0 Thanked 0 Times in 0 Posts	Re: CAN Bus (Controller Area Network) Great system like you have said with less wires, weight and reliability But a total nightmare to diagnose a system with 20+ ecu's. Gone are the days of using the avo. Not always but some of the time its shotgun diagnosis with the old get one off that sales car in the yard and swap it.