Страница 1 мировой engineering стандарты общая спецификация

8.4.6 Node Interface Function.
8.4.6.1 Node Interface Data Dictionary (Table 74).
Table 74: Node Interface Data Dictionary of InitiateDiagnosticOperation Service Pseudo Code
Variable/Meaning
Values
message_data_length
Security_Access_Unlocked
Security_Access_Allowed
Reference Common/Global
Pseudo Code Data
Dictionary For Definition Of
These Flags/Variables
8.4.6.2 Node Interface Pseudo Code.
Powerup States:
None
The following logic is executed when a request message with ServiceId $1A is received by the ECU:
BEGIN FUNCTION Serv_1A_Msg_Recvd()
IF (message_data_length != 2) THEN
send Negative Response ($7F $1A $12) /*Invalid Format */
ELSE
IF (($dataIdentifier is NOT supported) OR ($dataIdentifier requires security access AND
Security_Access_Unlocked = FALSE) OR ($dataIdentifier requires security code AND
Security_Access_Allowed = FALSE)) THEN
send Negative Response ($7F $1A $31) /* Request Out Of Range */
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---

---

25.06.2020
WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
https://translate.googleusercontent.com/translate_f
86/298
© Copyright 2010 General Motors All Rights Reserved
February 2010
Page 96 of 336
ELSE IF (ECU long term conditions prevent retrieval of the data) THEN
send Negative Response ($7F $1A $22) /* ConditionsNotCorrect */
ELSE
Page 97
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
© Copyright 2010 General Motors All Rights Reserved
February 2010
Page 97 of 336
IF (device cannot respond with block contents within P2
C 
ms) THEN
send Negative Response ($7F $1A $78) /* RequestCorrectlyReceived-ResponsePending */
ENDIF
/*Get data values from memory address associated with the $dataIdentifier*/
send ($5A $dataIdentifier $Data) /* send response message with DID data */
ENDIF
ENDIF
ENDFUNCTION