ISO 14230-2-2013 pdf free.Road vehicles – Diagnostic communication over K-Line (DoK- Line)一 Part 2: Data link layer.
This part of ISO 14230 specifies data link layer services tailored to meet the requirements of UART based vehicle communication systems on K-Line as specified in ISO 14230-1. It has been defined in accordance with the diagnostic services established in ISO 14229-1 and ISO 15031-5, but is not limited to use with them, and is also compatible with most other communication needs for in-vehicle networks.
The protocol specifies an unconfirmed communication.
The diagnostic communication over K-Line (DoK-Line) protocol supports the standardized service primitive interface as specified in ISO 14229-2.
This part of ISO 14230 provides the data link layer services to support different application layer implementations like:
– enhanced vehicle diagnostics (emissions-related system diagnostics beyond legislated functionality,non-emissions-related system diagnostics);
– emissions-related OBD as specified in IS0 15031, SAE ]1979-DA, and SAE J2012-DA.
In addition, this part of ISO 14230 clarifies the differences in initialization for K-line protocols defined in IS09141 and ISO 14230. This is important since a server supports only one of the protocols mentioned above and the client has to handle the coexistence of all protocols during the protocol-determination procedure.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 14230-1, Road vehicles一Diagnostic communication over K-Line (DoK-Line)一Part 1: Physical layer
ISO 14230-4, Road vehicles一Diagnostic systems – Keyword Protocol 2000一Part 4: Requirements for emission-related systems
3 Terms, definitions, symbols, and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1 5-baud initialization
5-BAUD_ INIT
starts with bus idle and ends with inverted address byte sent by the server
3.1.2 fast initialization
FAST_ INIT
starts with bus idle and ends with the reception of all positive responses of the StartCommunication service from all addressed servers
3.1.3 topology
serial link between client and servers that consists of a K-Line and an optional L-Line
3.1.4 server
function that is part of an electronic control unit and that provides the diagnostic services
3.1.5 client
function that is part of the tester and that makes use of the diagnostic services
Note 1 to entry: A tester normally makes use of other functions such as data base management, specific interpretation, human-machine interface.ISO 14230-2 pdf download.
Tags: Road vehicles
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