Страница 1 мировой engineering стандарты общая спецификация

Table 54: InitiateDiagnosticOperation(wakeUpLinks)
T = Frame Sent By Tester; N = Frame Sent By Node; shaded region indicates PCI
Frame Type CAN Id
#1
#2
#3
#4
#5
#6
#7
#8
T(USDT-SF)
$101
$FD
$02
$10
$04
---
---
---
---
N(USDT-SF)
$641
$01
$50
---
---
---
---
---
---
N(USDT-SF)
$64A
$01
$50
---
---
---
---
---
---
Page 81

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WORLDWIDE ENGINEERING STANDARDS General Motors Local Area Network Enhanced Diagnostic Test Mode Specification
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GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
© Copyright 2010 General Motors All Rights Reserved
February 2010
Page 81 of 336
8.2.6 Node Interface Function.
8.2.6.1 Node Interface Data Dictionary (Table 55).
Table 55: Node Interface Data Dictionary of InitiateDiagnosticOperation Service Pseudo Code
Variable/Meaning
Values
message_data_length
TesterPresent_Timer_State
Diag_Services_Disable_DTCs
DTCs_Enabled_In_Device_Control
Reference Common/Global
Pseudo Code Data Dictionary
For Definition Of These
Flags/Variables
valid_request
This flag is locally used within this service to determine if a positive response
is needed and whether to activate the TesterPresent_Timer_State
YES/NO
8.2.6.2 Node Interface Pseudo Code.
Powerup States:
Each time a $10 message is received, the following logic is executed:
BEGINFUNCTION Serv_10_Msg_Recvd()
IF (message_data_length != 2) THEN
Send Negative Response ($7F $10 $12) /*SubfunctionNotSupported-InvalidFormat */
valid_request ←
NO
ELSE
valid_request ←
YES
SELECT FIRST
WHEN ($Level= LEV_DADTC ) /* $02 Disable All DTCs */
TesterPresent_Timer_State ←
ACTIVE
Diag_Services_Disable_DTCs ←
TRUE
WHEN ($Level = LEV_EDDDC) /* $03 allow DTCs to run during device control */
/* verify that device control is not already active and that no other service has disabled DTCs before
setting the flag to allow them to continue to run during device control */
IF (Diag_Services_Disable_DTCs = TRUE) THEN
Send negative response ($7F $10 $22) /*ConditionsNotCorrectOrRequestSequenceError */
valid_request ←
NO
ELSE
TesterPresent_Timer_State ←
ACTIVE
DTCs_Enabled_In_Device_Control ←
YES
ENDIF
WHEN ($Level= LEV_WUPLNK ) /* $04 wake-up all links */
IF (more than P2
C 
is needed to process this request) THEN
send Negative Response ($7F $10 $78) /* request correctly received - response pending */
ENDIF
generate wake-up on all GMLAN links where wake-up mechanism is supported
if the wake-up mechanism implemented requires the gateway to continuously provide a hardwired
signal to keep the ECUs awake then the ECU shall set any necessary flags to ensure that the wake-up
remains active as long as the diagnostic VN is active
OTHERWISE
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