Страница 1 мировой engineering стандарты общая спецификация

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Position #31: SoftwareModule_26_DID
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Position #32: SoftwareModule_26_AlphaCode_DID
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Position #33: SoftwareModule_27_DID
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Position #34: SoftwareModule_27_AlphaCode_DID

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25.06.2020
WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
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© Copyright 2010 General Motors All Rights Reserved
February 2010
Page 313 of 336
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Position #35: SoftwareModule_28_DID
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Position #36: SoftwareModule_28_AlphaCode_DID
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Position #37: SoftwareModule_29_DID
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Position #38: SoftwareModule_29_AlphaCode_DID
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Position #39: SoftwareModule_30_DID
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Position #40: SoftwareModule_30_AlphaCode_DID
Example:
An ECU is comprised of 12 total software and calibrations modules. DIDs $C1 thru $CA
are used to provide the SWMI and DIDs $D1 thru $DA the SWMIAC for the first 10 modules.
The ECU stores the SWMI for the 11
th 
module in DID $70, the SWMIAC for the 11 module in
DID $71, the SWMI for the 12
th 
module in DID $72, and the SWMIAC for the 12
th 
module in
DID $73. In this case, the data reported upon request for this DID would contain the values
shown below:
Position
1
2
3
4
SWMI/SWMIAC 112 113 114 115
Hex value
70 71 72
73
Page 314
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
Table C37: Definition of GMLAN Identification Data
DID Description
R/W Data Type Len
$DE 
GMLANIdentificationData (GMLANID)
R
USN
≥
6
This DID contains a 1-byte Bus Type, a 2-byte GMLAN Kernel, and a 3-byte value that represents the
revision level of the GM serial data database file implemented on the specified network. This information
shall be repeated for each GMLAN network that the controller is connected to. The length of the DID will
be determined by the number of connected GMLAN networks, i.e., length is equal to 6*n, where n is the
number of connected GMLAN networks.
Bus Type: 
This value indicates which GMLAN network the next five bytes refer to. The Bus Type is a
one byte enumerated value. The Bus Type definition must be documented in a CTS, SSTS, or
supplemental diagnostic specification.