MIR Nav Bus Format - Page 2

KiwiJochen · #11 01-19-2010, 05:46 AM

NavCoder has CSMA/CD deployed in software - I wrote it, based on the standardised CSMA description. CD doesn't really come into play, as there is no D. :-)

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ccfj1 · #12 01-19-2010, 06:02 AM

Ah, thats where I read it then, thanks for clearing that up mate. Cheers

vince59it · #13 01-19-2010, 06:40 AM

Hallo, I know it does not fit very well into the thread, but what unit is this and which one is the bus cable???

ccfj1 · #14 01-19-2010, 06:44 AM

Looks like the nav unit from the x3

RealOEM.com BMW E83 X3 3.0d Retrofit kit, navigation with monitor

vince59it · #15 01-19-2010, 06:49 AM

Yes. And what about the bus cable, there are two connectors one light blue and the other one purple...

ccfj1 · #16 01-19-2010, 07:10 AM

The bus will be on the blue at a guess, the purple is for vehicle position stuff I think.

KiwiJochen · #17 01-19-2010, 07:22 AM

Quote:

Originally Posted by vince59it

Hallo, I know it does not fit very well into the thread, but what unit is this and which one is the bus cable???

That is the GPS Navigation Computer, which does all the hard work reading maps and figuring out where you are.

The ibus can be seen, white/yellow/grey, on the blue connector

The nav bus is on pin 7 of the violett connector

vince59it · #18 01-19-2010, 08:31 AM

Is there any problem or any "reset" procedure if/when unplugging the connectors?
As probably understood, I'm trying to connect diagnostic hardware to the bus and I do not want to damage anything in the car..THX

MGSteve · #19 01-20-2010, 10:39 AM

Quote:

Originally Posted by KiwiJochen

What I'm saying is there's a good chance it uses the same protocol as on the ibus and kbus

In that case, protocol is clearly understood, and command structure will be easy to determine

If the line uses ibus protocol, then NavCoder will show the data very easily.

So: Try and See!

Good Point! I'll give a try and see what happens!

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