Common higher layer protocols that operate on top of J are SAE J and SAE J The protocol is maintained by SAE International. The standard. SAE J is a specification which defines messages that are transmitted on a SAE which defines the requirements for the hardware and basic protocol that is . High-performance J software based protocol stack. Complete J source code is provided.
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Views Read Edit View history. This page was last edited on 29 Aprilat SAE J is a standard used for serial communications between ECUs on a heavy duty vehicle and also between a computer and the vehicle.
The J protocol uses different diagnostic connectors.
Automotive standards Technology stubs. Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest. This article about an automotive technology is a stub.
Languages Deutsch Polski Edit links. Retrieved from ” https: J is an automotive diagnostic protocol standard developed by the Society of Automotive Engineers SAE for heavy-duty and most medium-duty vehicles protocoll after From Wikipedia, the free encyclopedia. You can help Wikipedia by expanding it. Views Read Edit View history. From Wikipedia, the free encyclopedia.
Characters are transmitted in the common 8N1 format. This method allows multiple devices to share the bus without the need for a prltocol master node. A message is composed of up to 21 characters, unless the engine is stopped and the vehicle is not moving in which case transmitters are allowed to exceed the 21 byte max message length.
It has mostly been used for US made vehicles, and also by Volvo.
This page was last edited on 26 Augustat You can help Wikipedia by expanding it. This technology-related article is a stub. Some OEMs still use the 6-pin Deutsch. Technical and de facto standards for wired computer buses.
J Software Protocol Stack with Source Code
Other European brands have usually used KWP. Interfaces are listed by their speed in the roughly ascending order, so the interface protool the end of each section should be the fastest. The protocol is maintained by SAE International. Technical and de facto standards for wired computer buses. The hardware utilized are RS transceivers wired for open collector operation through the use of a pullup and pulldown of the separate data lines.
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Beginning inmost OEMs converted to the 9-pin Deutsch. Retrieved from ” https: The pinout for the 9-pin connector is: From tothe 6-pin Deutsch-connector was standard.
Up toindividual OEMs used their own connectors.