Страница 1 мировой engineering стандарты общая спецификация

Page 311
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
Table C30: Definition of End Model Part Number dataIdentifier
DID Description
R/W
Data Type Len
$CB 
EndModelPartNumber
R/W
9
USN
4
This DID is used to identify the part number that represents the combination of
hardware/software/calibrations present in the ECU as it is received in the vehicle assembly plant. This
part number is also used in service to uniquely identify the combination of
hardware/software/calibrations programmed into the ECU at the time the part is ordered. Converting the
four byte USN value to decimal provides the 8-digit part number assigned by the division. If an Alpha
Code is used, then the Alpha Code associated with this part number shall be stored in dataIdentifier
$DB.
W
9 
= This DID may or may not be updated at the conclusion of a programming event based on
divisional practices. This DID is not required to be writeable if divisional practices do not require
this part number to be updated after module programming.
Position
1 2 3
4 ---
EndModelPartNumber
16265965
---
Hex value
00 F8 32 ED ---

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Table C31: Definition of Base Model Part Number dataIdentifier
DID Description
R/W
Data Type Len
$CC 
BaseModelPartNumber (BMPN)
R
USN
4
This DID contains BaseModelPartNumber information which is used during SPS programming to identify
a unique combination of ECU hardware and all non-reprogrammable software (e.g., Boot software). The
BMPN must be stored in the ECU in a non-erasable memory area (e.g., boot sector of flash, or
EEPROM). It shall not be possible to change the BMPN as part of a programming session or through
diagnostic services when a programming session is not active. The BMPN of a service replacement
ECU shall be identical to that of a Production ECU if both ECUs have the same hardware and non-
reprogrammable software. If an Alpha Code is used, then the Alpha Code associated with this part
number shall be stored in dataIdentifier $DC.
Position
1 2 3
4 ---
BaseModelPartNumber
16265965
---
Hex value
00 F8 32 ED ---