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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Up toindividual OEMs used their own connectors.
This article about an automotive technology is a stub. This technology-related article is a stub. This method allows multiple devices to share the bus without the need for a single master node. Technical and de facto standards for wired computer buses. J is an automotive diagnostic protocol standard developed by the Society of Automotive Engineers Proyocol for heavy-duty and most medium-duty prootocol built after Views Read Edit View history.
Technical and de facto standards for wired computer buses.
Views Read Edit View history. Retrieved from ” https: You can help Wikipedia by expanding it. Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest.
Some OEMs still use the 6-pin Deutsch. The J protocol uses different diagnostic connectors. Automotive technology stubs Automotive technologies Automotive standards.
SAE J is a standard used for serial communications between Protocll on a heavy duty vehicle and also between a computer and the vehicle. Retrieved from ” https: J11587 page was last edited on 29 Aprilat The pinout for the 9-pin connector is: Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest.
Beginning inmost OEMs converted to the 9-pin Deutsch. Languages Deutsch Polski Edit links.
Transmission is accomplished by controlling the driver enable pin of the transceiver. This page was last edited on 26 Augustat 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. From Wikipedia, the protoclo encyclopedia. You can help Wikipedia by expanding it.
The protocol is maintained by SAE International. From tothe 6-pin Deutsch-connector was standard.
Collisions are avoided by monitoring the bus while transmitting the MID to ensure that another node has not simultaneously transmitted a MID with a higher priority. The hardware utilized are RS transceivers wired for j157 collector operation through the use of a pullup and pulldown of the separate data lines.
Other European brands have usually used KWP.