RE: J1939/11 SHIELD GROUND

I ran into a similar problem.  I needed both Engine RPM and Transmission
Selection from a J1939 bus.  The costs of the standard also appeared
prohibitively high.  However I was starting with a large wall chart on J1939
from Vector and a book by Wilfried Voss titled “A Comprehensible Guide to
J1939”
Also there are a number of free J1939 monitoring programs out there that do
list a lot of the message IDs and data content.  With all that and a bit of
reverse engineering we did find the RPM and transmission selector.  
However, ultimately we bit the bullet and bought the relevant standards.
Given that perhaps people's lives are at risk if equipment malfunctions the
standards costs are pretty low.
John  Dammeyer

From: [email protected]
[mailto:[email protected]] On Behalf Of Bram
Kerkhof
Sent: June-09-15 7:31 AM
To: [email protected]
Subject: RE: [CANLIST] J1939/11 SHIELD GROUND

Investing a couple of Benjamins to ensure your products are playing nice
with other doodahs that are controlling multiple metric tons of
bone-crushing and flesh-grinding machinery is *always* a good idea.
IIRC, SAE has a web subscription package for all J1939-related standards
that is not completely over-the-top expensive (but not cheap either).

As far as I’m aware, all downloads from the SAE (and ISO as well) are
watermarked with the details of the buyer. You might be able to access the
documents in a university/polytechnical school library (if you have access
to one of those).

cheers,
Bram

From: [email protected]
[mailto:[email protected]] On Behalf Of Cain
Shultz
Sent: dinsdag 9 juni 2015 15:33
To: [email protected]; [email protected]
Subject: FW: [CANLIST] J1939/11 SHIELD GROUND

Good Day Bram,

Thank you for that information.  You seemed to sum it up pretty easily.
Unfortunately I do not have a copy of J1939/11 to reference.  My resources
are limited and I do not have the funding to purchase such document from
SAE.. my company does not really see the point in ‘investing’ in such
documents at the moment.  I chose J1939/11 as our business is in the
off-highway fluid power sector.  So a majority of our customers use J1939. 
I am looking to follow best practices from the very beginning, rather than
making things work.. then realizing it didn’t follow requirements and it be
a mess down the line or doesn’t communicate with other CAN networks on a
machine.
We (and that, I mean, ‘I’) are hoping to expand from a hydraulic supplier
into a systems integrator using electronics/hydraulics.  Is there any other
source for J1939/11?.. 
[email protected]

Thank you for your time,
-Cain




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