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For the record: I now have connected GND to both 4+5 on the OBD2
plug, works as well.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 10.11.2012 19:57, schrieb
<a class="moz-txt-link-abbreviated" href="mailto:mikeljo@me.com">mikeljo@me.com</a>:<br>
</div>
<blockquote cite="mid:4A194A9A-C4CE-4E0C-A7A1-C14D8213D745@me.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html;
charset=ISO-8859-1">
Hi,
<div><br>
</div>
<div>i use this pinout:</div>
<div>
<div class="page" title="Page 3">
<div class="section" style="background-color: rgb(255, 255,
255); position: static; z-index: auto; ">
<div class="layoutArea">
<div class="column">
<p><span style="font-size: 7.000000pt; font-family:
'Verdana'; font-weight: 700; color: rgb(20.000000%,
20.000000%, 20.000000%)">Primary Data Link
Connector- (DLC) X84 *Under drivers side of IP
</span></p>
<p><span style="font-size: 7.000000pt; font-family:
'Verdana'; color: rgb(20.000000%, 20.000000%,
20.000000%)">Pin 1 is Low Speed GMLAN (SWCAN
~33.3kbps) - Body Electrical Services Only
Pin 2-3 Unused<br>
Pin 4 chassis ground (for scan tool)<br>
Pin 5 data reference ground
</span></p>
<p><span style="font-size: 7.000000pt; font-family:
'Verdana'; color: rgb(20.000000%, 20.000000%,
20.000000%)">Pins 6(+) & 14 (-) High Speed
GMLAN- Primary Powertrain Bus (DWCAN ~500 kbps)
Pins 7-11 Unused<br>
Pins 12(+) & 13(-) High Speed GMLAN- Chassis
Expansion Bus (DWCAN ~500 kbps)
Pin 15 Unused
</span></p>
<p><span style="font-size: 7.000000pt; font-family:
'Verdana'; color: rgb(20.000000%, 20.000000%,
20.000000%)">Pin 16 B+ (for scan tool power)</span><span
style="color: rgb(51, 51, 51); font-family: Verdana;
font-size: 7pt; "> </span></p>
</div>
</div>
</div>
</div>
<div>
<div>OBDII<span class="Apple-tab-span" style="white-space:pre">
</span>Sub-D<span class="Apple-tab-span"
style="white-space:pre"> </span>Signal</div>
<div>16<span class="Apple-tab-span" style="white-space:pre"> </span>9<span
class="Apple-tab-span" style="white-space:pre"> </span>+12V</div>
<div>4<span class="Apple-tab-span" style="white-space:pre"> </span>6+3<span
class="Apple-tab-span" style="white-space:pre"> </span>GND-Chassis</div>
<div>6<span class="Apple-tab-span" style="white-space:pre"> </span>7<span
class="Apple-tab-span" style="white-space:pre"> </span>CAN_H</div>
<div>14<span class="Apple-tab-span" style="white-space:pre"> </span>2<span
class="Apple-tab-span" style="white-space:pre"> </span>CAN_L</div>
<div><br>
</div>
<div>I connect 6 and 3 at the Sub-D side together.</div>
<div>So it looks like we can use the same Cable (for the
Primary Can Bus in the Volt). >> Fasttech?</div>
<div><br>
</div>
<div>Bye</div>
<div>Michael</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>Am 10.11.2012 um 06:47 schrieb Mark Webb-Johnson <<a
moz-do-not-send="true" href="mailto:mark@webb-johnson.net">mark@webb-johnson.net</a>>:</div>
<br class="Apple-interchange-newline">
<blockquote type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<div dir="auto">
<div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);">Yes,
chassis GND vs signal GND, but can is differential,
so no GND needed for the signal. We only need GND
for 12V power. For vehicles, I think chassis GND is
ok.</span></div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);"><br>
</span></div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);">I think
Volt bus we are using is on the same pins:</span></div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);"><br>
</span></div>
<div><a moz-do-not-send="true"
href="http://www.evtools.info/ChevyVoltOBD2CAN.html"
style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);"><font>http://www.evtools.info/ChevyVoltOBD2CAN.html</font></a></div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);"><br>
</span></div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);">Maybe 1
cable can do both?</span></div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);"><br>
</span></div>
<div><span style="-webkit-text-size-adjust: auto;
background-color: rgba(255, 255, 255, 0);">Regards,
Mark</span></div>
<br>
<span style="-webkit-text-size-adjust: auto;">On 10 Nov,
2012, at 12:18 PM, Michael Balzer <<a
moz-do-not-send="true"
href="mailto:dexter@expeedo.de">dexter@expeedo.de</a>>
wrote:</span><br>
<br>
</div>
<blockquote type="cite" style="-webkit-text-size-adjust:
auto; ">
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
Mark,<br>
<br>
yes, that's chassis ground -- shouldn't it be? I
interpreted the OVMS GND as the ground for the supply
voltage (12V), as the CAN bus has its dedicated "low"
line.<br>
<br>
I just looked up some OBD2 sites: 4+5 normally are the
same. One page says an OBD2 cable should have identical
potential on 4 and 5 to ensure proper function. Another
OBD2 cable I bought connects them, so maybe for a
general product GND should connect both, but I don't
think there's a difference on the car side... normally.<br>
<br>
But I've also seen some info on non standard OBD2 plugs,
also for some GM and Opel cars, having other signals
where the CAN bus should be, so I'm also interested in
your pinout, Michael J.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 10.11.2012 04:23,
schrieb Mark Webb-Johnson:<br>
</div>
<blockquote
cite="mid:D5417B8E-2C87-4ECA-93CC-867D34BD6164@webb-johnson.net"
type="cite">
<meta http-equiv="content-type" content="text/html;
charset=ISO-8859-1">
<div>Michael,</div>
<div><br>
</div>
<div>One question: you have GND on pin #4 (odb). I
have that shown as chassis ground, not signal
ground. Is that correct?</div>
<div><br>
</div>
<div>Michael J: is that the same connector and pins as
you are using for the Volt?</div>
<div><br>
</div>
<div>Regards, Mark<br>
<br>
On 10 Nov, 2012, at 2:16 AM, Michael Balzer <<a
moz-do-not-send="true"
href="mailto:dexter@expeedo.de">dexter@expeedo.de</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>
<meta content="text/html; charset=ISO-8859-1"
http-equiv="Content-Type">
Mark,<br>
<br>
great to hear about user activity :-)<br>
<br>
1) I just created an OVMS to OBD2 cable image and
checked it in:<br>
<a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="https://github.com/dexterbg/Open-Vehicle-Monitoring-System/commit/a7c3a3e8f12d7759b896bb75c8e570ebc10ec11a">https://github.com/dexterbg/Open-Vehicle-Monitoring-System/commit/a7c3a3e8f12d7759b896bb75c8e570ebc10ec11a</a><br>
As OBD2 is standard incl. CAN pinout, this should
be valid for any OBD2 port, so could be added to
the FastTech OVMS product line. It's not a
standard cable, or at least none I know of.<br>
<br>
2) No known way up to now. I also think the Twizy
would not respond to the port, as the whole CAN
bus is quiet when the car is off and not charging.
Plus, because the charger draws some 30-35 W for
many hours after charging has completed, many
drivers use auto-power-off sockets.<br>
<br>
3) I'll forward your specification to the german
Twizy forum.<br>
<br>
Regards,<br>
Michael<br>
<br>
<br>
<div class="moz-cite-prefix">Am 09.11.2012 15:23,
schrieb Mark Webb-Johnson:<br>
</div>
<blockquote
cite="mid:EE90302A-61CF-4387-A310-48BE6A32ABC4@webb-johnson.net"
type="cite">
<meta http-equiv="Content-Type"
content="text/html; charset=ISO-8859-1">
<div><br>
</div>
<div>Twizy support seems to be coming along
nicely, thanks to the amazing work Michael is
doing. Some good functionality there already.</div>
<div><br>
</div>
<div>I'm starting to see some Twizy users
register on <a moz-do-not-send="true"
href="http://openvehicles.com/">openvehicles.com</a>.
Perhaps the word is getting out?</div>
<div><br>
</div>
<div>Some questions / requests:</div>
<div><br>
</div>
<div>
<ol class="MailOutline">
<li>Michael: Can you let me have the details
on the cable pinouts and parts you are
using at the moment? Is it a standard
cable, or are you having to make something
up?<br>
<br>
</li>
<li>How is charge control on the Twizy done?
Is there any way of stopping or starting
(topup) a charge from within the car, or
is it just controlled by plugging? Any
chance of can bus control of this?<br>
<br>
</li>
<li>Can anyone help with the car images for
the Twizy? There are lots of nice images
available, but they need to be
photoshopped to the right dimensions and
transparent background png.</li>
</ol>
</div>
<div><br>
</div>
<div>Regards, Mark.</div>
<div><br>
</div>
<br>
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Michael Balzer * Paradestr. 8 * D-42107 Wuppertal
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