Communicate with single wire vehicle bus system

LIN Interface for USB
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Steve
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Joined: Wed 19. May 2021, 20:29

Communicate with single wire vehicle bus system

Post by Steve » Wed 19. May 2021, 21:03

Hello,
actually I'm looking for a device, which is capable to communicate with a 12 V single wire vehicle bus system.

Unfortunately I'm not 100 % sure if it's really a LIN-compatible bus system. Please see attachment, where I recorded one master message and the slave response. This repeats then every 100 ms.
Bus message.PNG
Bus message.PNG (33.99 KiB) Viewed 1199 times
If this is not a LIN-Bus, would it be anyways possible to use PLIN-USB interface as a slave device in this bus system?
Basic task is to wait for the master message and then send a pre-definded (recorded) slave message.

Thank you in advance!

BR
Steve

M.Maidhof
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Re: Communicate with single wire vehicle bus system

Post by M.Maidhof » Thu 20. May 2021, 08:03

Hi Steve,

this signal does not look like a LIN bus nor a CAN bus signal. This looks like a PWM signal. So it will not be possible to use the PLIN-USB for such a signal. Who is the manufacturer of the vehicle with those bus signals?

regards

Michael

Steve
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Joined: Wed 19. May 2021, 20:29

Re: Communicate with single wire vehicle bus system

Post by Steve » Thu 20. May 2021, 09:14

Hello Michael,

this is a 2018 Subaru WRX STI .
It's the communication between seat occupancy sensor/control unit and airbag control unit.

Do you have any other device, which is able to "simulate" slave response?

BR
Steffen

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Re: Communicate with single wire vehicle bus system

Post by M.Maidhof » Thu 20. May 2021, 10:54

Hi,

no, we don't offer any devices which are able to simulate such signals.

regards

Michael

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