monitoring ecu with serial cable - Audio & Electronics Forum

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monitoring ecu with serial cable
Sunday, November 27, 2005 12:09 AM
found an interesting link. i think others have made an interface that works with the odbII system. i am going to be trying this out in the spring. these look like the directions to make the correct cable?

http://www.techedge.com.au/vehicle/aldl160/160serial.htm

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Re: monitoring ecu with serial cable
Sunday, November 27, 2005 7:54 AM
how about this?


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Re: monitoring ecu with serial cable
Sunday, November 27, 2005 9:28 AM
Jasonoshawaz24 wrote:found an interesting link. i think others have made an interface that works with the odbII system. i am going to be trying this out in the spring. these look like the directions to make the correct cable?

http://www.techedge.com.au/vehicle/aldl160/160serial.htm



Looks simple enough.



Re: monitoring ecu with serial cable
Sunday, November 27, 2005 9:42 AM
It doesn't work, at least not reliably. The amount of overhead with timing, dropping packets, and conversion make it so it runs extremely low. The 1600 baud rate is simply disgusting, and not of any use for any type of data logging. The ELM interface, that runs at 9600 baud, can only poll about 10 items per second, this pure serial interface which is about 5 times slower, would only be able to poll about 2 items per second.





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Re: monitoring ecu with serial cable
Sunday, November 27, 2005 11:30 AM
yeah, seriously, serial is old stuff.



Re: monitoring ecu with serial cable
Sunday, November 27, 2005 2:25 PM
Shifted wrote:It doesn't work, at least not reliably. The amount of overhead with timing, dropping packets, and conversion make it so it runs extremely low. The 1600 baud rate is simply disgusting, and not of any use for any type of data logging. The ELM interface, that runs at 9600 baud, can only poll about 10 items per second, this pure serial interface which is about 5 times slower, would only be able to poll about 2 items per second.
I thought modbus and controlnet were behind the times. This protocol goes beyond archaic.
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