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DBC File Format.pdf
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vector DBC文件格式描述 V1.0.5
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DBC File Format Documentation I
DBC File Format
Documentation
Version 1.0.5
This specification as released by Vector is intended for the purpose of
information only and is provided on an "AS IS" basis only. To the extent
admissible by law, Vector disclaims any warranties or liabilities from the
use of this specification. The unauthorized use, e.g. copying, displaying
or other use of any content from this document is a violation of the law
and intellectual property rights. You must not distribute this specification
to anyone outside of the department or the project for which your com-
pany has received this specification, and in particular the distribution
outside your company is expressly inadmissible.
© 2008 Vector Informatik GmbH
All rights reserved.
DBC File Format Documentation II
Document Management
Revision History
Version Editor Description
1.0 of 2007-02-09 Qu Specification created
1.0.1 of 2007-11-19
Qu Description of byte order in signal section corrected. Big endian is
stored as "0", little endian is stored as "1".
1.0.2 of 2008-09-03
Sps
The value type “string” of an environment variable is alternatively
stored together with the access type in current DBC format
1.0.3 of 2009-08-26
Ne Description of value ranges and extended multiplexor functionality.
Adapted “Signal Definitions” section according to extended multi-
plexing functionality.
1.0.4 of 2010-02-12
Ne Added definition of DBC-keywords and printable characters.
Added explanation for Pseudo-message 'VEC-
TOR__INDEPENDENT_SIG_MSG'.
Corrected: Mask for Extended CAN ID.
Corrected: Definition for Signal Value Descriptions
1.0.5 of 2010-04-12
Ne Added: The backslash isn’t allowed in ‘char_string’.
Corrected: Name of a DBC-identifier is always limited to 32 charac-
ters.
Table of contents
1
Introduction..................................................................................................................1
2
General Definitions ......................................................................................................1
3
Structure of the DBC File.............................................................................................2
4
Version and New Symbol Specification......................................................................3
5
Bit Timing Definition....................................................................................................4
6
Node Definitions...........................................................................................................4
7
Value Table Definitions................................................................................................4
7.1
Value Descriptions (Value Encodings).................................................................................4
8
Message Definitions.....................................................................................................5
8.1
Pseudo-message ....................................................................................................................5
8.2
Signal Definitions..................................................................................................................5
8.3
Definition of Message Transmitters......................................................................................7
8.4
Signal Value Descriptions (Value Encodings)......................................................................7
9
Environment Variable Definitions...............................................................................7
9.1
Environment Variable Value Descriptions............................................................................8
DBC File Format Documentation III
10
Signal Type and Signal Group Definitions .........................................................8
11
Comment Definitions ...........................................................................................8
12
User Defined Attribute Definitions......................................................................9
12.1
Attribute Definitions..............................................................................................................9
12.2
Attribute Values ....................................................................................................................9
13
Extended Multiplexing .........................................................................................9
14
Examples ............................................................................................................10
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