Shortend Ground

LIN Interface for USB
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o4rz3l
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Joined: Thu 17. Jan 2019, 08:22

Shortend Ground

Post by o4rz3l » Tue 2. Apr 2019, 13:09

Hi,
i received my PLIN-USB today. I created a small adapter from our PCB-Edge-Connector to an female D-Sub Connector. Everything seems fine, but the PLIN View Software says "Bus-Line: Shorted Ground". But there is no obvious short-cut on my adapter? Do i miss somethgin? Our Vbat is about 12 Volt.

Thanks!
Best regards,
O4r

M.Maidhof
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Re: Shortend Ground

Post by M.Maidhof » Tue 2. Apr 2019, 14:23

Hi,

on which pins of your D-Sub did you connect Vbat and GND?

regards

Michael

o4rz3l
Posts: 4
Joined: Thu 17. Jan 2019, 08:22

Re: Shortend Ground

Post by o4rz3l » Wed 3. Apr 2019, 12:24

Hi,
like described here: https://www.peak-system.com/PLIN-USB.485.0.html

4 LIN
5 GND
9 Vbat

I don't see the problem ... :(

Thanks!
O4r

M.Maidhof
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Re: Shortend Ground

Post by M.Maidhof » Wed 3. Apr 2019, 17:58

Hi,

that is ok. Please measure the LIN voltage on the PLIN-USB against GND

best regards

Michael

o4rz3l
Posts: 4
Joined: Thu 17. Jan 2019, 08:22

Re: Shortend Ground

Post by o4rz3l » Thu 4. Apr 2019, 11:33

Hi,

we have a 5V LIN Voltage and this is what i measure between LIN and GND...

Best regards,
O4r

M.Maidhof
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Re: Shortend Ground

Post by M.Maidhof » Thu 4. Apr 2019, 12:08

Hi,

that is not correct. LIN will only work above 6 Volts (typically 8-18V), please see technical spec in the manual for more details. In your post above you say you use 12Volts?

regards

Michael

o4rz3l
Posts: 4
Joined: Thu 17. Jan 2019, 08:22

Re: Shortend Ground

Post by o4rz3l » Thu 4. Apr 2019, 14:00

Hi,
thanks for the answer!
Yes, we have an adopted "LIN" since we are not part of the automotive industry. We have a 4-pin connector with GND, LIN, 5V, 12V, whereas the LIN is also 5V.

So it seems, that i need to make an adapter board (5V<->12V)...
Thank you very much for your help!

Best regards,
O4r

M.Maidhof
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Re: Shortend Ground

Post by M.Maidhof » Thu 4. Apr 2019, 14:55

Hi,

would have been helpfull to tell me those facts in your first post.....

regards

Michael

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