Generic OBD2 Tx Template

D153, D175, C125, C127, C185 and C187 forum

Generic OBD2 Tx Template

Postby PEI330Ci on Sun Aug 06, 2017 5:58 pm

Hello,

I'm looking to transmit common data channels over CAN to a device expecting to receive generic OBD2 data.

Is there a template available for C125?

Thanks,

Adam
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Re: Generic OBD2 Tx Template

Postby David Ferguson on Mon Aug 07, 2017 3:57 am

ODB-II is a request/response protocol. So the C125 isn't a good device to generate that data.
David Ferguson
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Re: Generic OBD2 Tx Template

Postby PEI330Ci on Mon Aug 07, 2017 1:25 pm

Thanks Dave

I understand the Mode inits...just curious if someone has a template to constantly transmit one of the output datasets. In theory, the device sending the request doesn't need to know that the C125 isn't listening, if a data stream is active....
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Re: Generic OBD2 Tx Template

Postby adrian on Mon Aug 07, 2017 2:32 pm

If your device doesn't care that it is receiving responses to messages it hasn't sent then it should be be easy enough to setup a template to transmit the messages you want. All you need to do is make a transmit template that matches the OBD receive template that you can already load into the Dash config. Unfortunately you can't simply take the existing receive template and make it a transmit template.

However, it is possible that the device will flag errors if it doesn't receive a response within a certain time period or if it receives a response it hasn't requested and may ignore the data. This is something you will need to test.
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