ISO (E). INTERNATIONAL. STANDARD. ISO. First edition . Road vehicles — Diagnostic systems —. Keyword Protocol Partie 2: Couche de liaison de données. STANDARD. ISO. Third edition . Reference number. ISO (E). Provläsningsexemplar. (DoK-Line) —. Partie 2: Couche de liaison de données. STANDARD. ISO. 2. Second edition. Reference number. ISO (E).
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Sign up or log in Sign up using Google. This message uses functional io and contains the target address of the OBD system and the source address of the tester. The Car Hacker’s Handbook: This protocol covers the application layer in the OSI model of computer networking.
Two types of initialization can be used: The fast initialization begins with wake-up pattern WuPtransmitted by the tester simultaneously on K and L lines. The data rate is between 1. Therefore, to keep connection alive the tester must send periodically request messages.
Isl is implemented in two ways in initSlow method.
ISO and ISO INITIALIZATION and DATA TRANSFER – EverythingHere – 博客园
To clarify, the different parts were published on different years? You can help Wikipedia by expanding it. A system timer for ms 5-baud bit time is used.
Keyword Protocol 2000
The transfer timing is very important and is determined by the periods P1…P4 with specified maximal and minimal allowable values.
One underlying physical layer used for KWP is identical to ISOwith bidirectional serial communication on a single line called the K-line. All subsequent communications are using this baud rate. Email Required, but never shown. In addition, there is an optional L-line for wakeup. The different parts of the ISO have been published or updated on different years.
For K-only initialization the port is configured at 5 baud rate; the address byte is sent; ms pause follows; baud rate is restored to 10, baud.
The address byte contains the functional address of the OBD system. The period P3max has value of ms. CAN is becoming an increasingly popular alternative to K-line because the CAN bus is usually present in modern-day vehicles and thus removing the need to install an additional physical cable.
14230-22 Noting that even though the years do not correspond with the order of the different parts but when referencing works by the same author the most recent comes first.
Automotive technologies Technology stubs.