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Old 09-30-2012, 09:59 AM   #1
Meritlane OP
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CAN-BUS explained

can someone explain what exactly can-bus does, why you need/don't need it when hooking up aux components. Which applications are necessary and how to do it.
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Old 09-30-2012, 10:05 AM   #2
eddie bolted
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[QUOTE=Meritlane;19712932]can someone explain what exactly can-bus does,

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Old 09-30-2012, 10:09 AM   #3
PatrickM
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You could start here...

http://www.bmwmotorcycletech.info/canbus.htm

Quote:
CanBus allows most all the various computers (and stuff that is peripheral, and maybe not really even a tiny computer) to 'talk' or 'communicate' with each other in a both simplified AND complex manner. This means that NEARLY EVERY electrical device on your bike could be connected to the Can-bus system, which CONTINUOUSLY and RAPIDLY monitors everything via a computer. The system can also monitor current flow, voltage, etc. If you tried to tap into the electrical system for an extra electrical gadget, Can-bus might complain...in essence the Can-Bus computer thinks, rightly or wrongly, that the bike has a problem. It might even record the problem, and give you a visual signal that all was not well. If the load was egregious enough, the bike might not start or be otherwise not rideable.
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Old 09-30-2012, 01:45 PM   #4
bmwroadsterca
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CAN-Bus Confusion

Unfortunately almost the entire community has adopted the term "CAN-bus" (which is actually a controller network) when what is actually at work monitoring and controlling the electrics is the ZFE. Those wanting to better understand how applying traditional wiring techniques can lead to unintended consequences should also research "ZFE". In so doing one can better discern why a given reference citing the CAN-bus appears to have no bearing on the electrical issue while another one will. The misuse of the terminology is pervasive with little hope of correction.
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