Страница 1 мировой engineering стандарты общая спецификация

Table 163: ReportProgrammedState - Response Example
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
$FE
$01
$A2
---
---
---
---
---
N1(USDT-
SF)
$641
$02
$E2
$00
---
---
---
---
---
N2(USDT-
SF)
$380
$02
$E2
$01
---
---
---
---
---
--``,,``````,``,,``,,,`,`,`,,-`-`,,`,,`,`,,`---
Page 182
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
8.16.6 Node Interface Function.
8.16.6.1 Node Interface Data Dictionary (Table 164).
Table 164: Node Interface Data Dictionary of ReportProgrammedState Service Pseudo Code
Variable/Meaning
Values
message_data_length
message_address_type
normal_message_transmission_status
diagnostic_responses_enabled
Reference Common/Global
Pseudo Code Data
Dictionary For Definition Of
These Flags/Variables
programmedState
This is a variable which is used to indicate whether or not a programmable ECU
is fully programmed, or if any memory errors exist.
See Response Message
Definitions Section
Service_Id
This is a variable used in the pseudo code of the diagnostic application function
which is used to represent the diagnostic service which is being requested (first
data byte after the network layer information for diagnostic request messages).
$00 thru $FF
8.16.6.2 Node Interface Pseudo Code.
Powerup States:
None
The following logic is executed when a device powers up or reboots after a software reset:
Check memory for errors
Check for operational software and calibrations
Store result of memory, software and calibration checks in $programmedState
IF (permanent diagnostic CAN Identifiers are programmed) THEN
diagnostic_responses_enabled ←
YES
ELSE
diagnostic_responses_enabled ←
NO
ENDIF
The following pseudo code is correct for service $A2 provided that the portion of the diagnostic application

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program interface (API) which handles processing diagnostic received messages is functionally equivalent to
the diagnostic API pseudo code below:
BEGINFUNCTION Serv_A2_Msg_Recvd()
IF (message_data_length != 1) THEN
IF (diagnostic_responses_enabled = YES) THEN
Reject the request with a ($7F $A2 $12) for invalid format
ENDIF
ELSE
diagnostic_responses_enabled ←
YES
/* in larger ECUs, it may be possible for a tester to request this service
after an ECU powers up but before the ECU completes the programmedState
calculation. If this occurs, an ECU can send the $7F $78 response and then
send the positive response after the calculation is complete */