Страница 1 мировой engineering стандарты общая спецификация



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WORLDWIDE ENGINEERING STANDARDS General Motors Local Ar

Where:
M

= This return code is required if the SPS utility file contains different routines for the various suppliers of
permanent memory that are used for a given ECU.
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---
Page 165
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
8.13.5 Message Flow Example Transfer Data.
8.13.5.1 TransferData Positive Response Example (ECU Uses 3-Byte Address). 
The following example
(Table 143) assumes:

The node uses 3-byte addressing (e.g., startingAddress is three bytes).

The node targeted is programmable.

The node has security unlocked.

Mode $28 is already active.

Mode $A5 is already active (programming mode enabled).

A Mode $34 request was sent and a positive response resulted.

The tester is downloading and executing a routine (sub-function = $80).

The routine (dataRecord[]) to be transferred contains 250 bytes of data (so message_data_length = 250 +
5 or 255 bytes. The 5 bytes come from the Service ID plus the sub-function parameter byte plus the 3-byte
startingAddress).

The starting address ($00 $23 $FF) plus the number of data bytes all fall into valid ECU memory address
space.

It takes the node longer than P2

ms to completely download and execute the routine (so the node sends
a negative response with response code $78, and eventually sends a positive response (within the
enhanced P2
CE
* timing for programming) message which indicates that the block of data is successfully
received and processed by the ECU.

The target node physical request CANId is $241.

The target node physical USDT response CANId is $641.

The USDT flow control parameters Block Size (BS) and Separation Time (ST) are both $00.

TesterPresent messages are sent (but are not shown in the example).

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