PLUS+1 User Forum
PLUS+1 Software => Communication => Topic started by: FluidPowerTom on September 25, 2019, 11:28:21 PM
-
Is anyone familiar with J1979, and can you recommend a good document for applying it? I'm finding references to the standards document and some articles about it, but I haven't found anything that breaks down the messages (11-bit CAN ID I think?).
-
I have no clue, but I found this :
https://www.sae.org/standards/content/j1979_201702/
Maybe you could buy this standard (do not cost that much) and maybe you will find the required info.
Have a good day!
Sam
-
Sam, we do own several of the J1939 standards, but I don't think I'd recommend them to anyone as learning material for developing an application. They're more low level than what is needed for a developer using a platform like PLUS+1. They're great for referencing the details of various PGNs and SPNs once you already know what a PGN and a SPN is.
-
You mean SAE J1979 a.k.a. OBDII? Here's a message and PID breakdown:
https://www.csselectronics.com/screen/page/simple-intro-obd2-explained/language/en (https://www.csselectronics.com/screen/page/simple-intro-obd2-explained/language/en)
https://en.wikipedia.org/wiki/OBD-II_PIDs (https://en.wikipedia.org/wiki/OBD-II_PIDs)
-
Thanks! Indeed the Wikipedia page was the best I'd found so far for practical application stuff I need, and I used that to build a list of transmissions and expected replies that I'll be testing soon.
I'll scope out the other link and see what I can learn.
-
On a similar note, I find that the Danfoss controllers are very suitable for generic control applications requiring CAN communications, whether J1939, J1979, or ISO-BUS. I have used them in rail, heavy truck, and agricultural applications where there's not a drop of hydraulic fluid (unless you count transmission fluid). I hope the communications library expands to include these other protocol layers.
-
That's really good to know about ISOBUS. I made a topic a while back in this forum asking about it, and all I got was the official answer that it's not supported.