Kia Soul EV Multi-Frame Message

Discussion and research on OBDII integration, especially on OEM specific PIDs from Ford, GM, Chevrolet, BMW, Porsche, Audi, Toyota, Volkswagen, Mazda, Honda, Subaru, Mitsubishi and others.
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dyip
Posts: 14
Joined: Mon May 08, 2017 3:35 pm
Location: Vancouver, BC

Kia Soul EV Multi-Frame Message

Post by dyip »

I am trying to access mode 21h data from a Kia Soul EV Battery Management System for our EV Race Car. Previously, I have been using Torque Pro to access the data. Will you be upgrading the OBDII access to allow multi-frame data? Many OEM's use multi-frame data access for their proprietary scan tools. I see from a previous post (bobel/mkarr) others are also having the same issue trying to access Toyota data.

For instance, to gain "Maximum Battery Temperature", using Torque, I would ask for data from 2101 from device 7E4. I would set the data type as "signed", and ask for data offset byte O. I have attached a screen shot (courtesy of Kia Soul EV Owners forum) that shows the data at 2101.

I assume that I can do this with Lua Script. Any bits of sample code that may help me get started?

I believe I need to send: 7E4 02 21 01 00 00 00 00 00 00. (Mode 21, PID 01, Sender 7E4)
Wait for response: 7EC 10 3D 61 01 FF FF FF FF FF (signifying 3D bytes of data from device 7EC)
Send an acknowledge: 7E4 30 00 00 00 00 00 00 00 00
Receive: 62 bytes of data from 7EC
Attachments
bms_2101.JPG
bms_2101.JPG (101.46 KiB) Viewed 7219 times

brentp
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Joined: Wed Jan 24, 2007 6:36 am

Post by brentp »

Hi, we definitely have it on our list to handle multi-frame data. Targeting the next firmware release.
Brent Picasso
CEO and Founder, Autosport Labs
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dyip
Posts: 14
Joined: Mon May 08, 2017 3:35 pm
Location: Vancouver, BC

Post by dyip »

I thought I would post this code example to extract a piece of data from an OBDII Multi-Frame message and output it as a virtual channel. Hope this is useful.
Attachments
multimessagercpexample.JPG
multimessagercpexample.JPG (58.92 KiB) Viewed 7204 times

brentp
Site Admin
Posts: 6281
Joined: Wed Jan 24, 2007 6:36 am

Post by brentp »

This is very helpful; thank you.
Brent Picasso
CEO and Founder, Autosport Labs
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