Страница 1 мировой engineering стандарты общая спецификация

Table 106: SecurityAccess(requestSeed) Positive Response
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)
$241
$02
$27
$01
---
---
---
---
---
N(USDT-SF)
$641
$04
$67
$01
$aa
$bb
---
---
---
Page 130
GM WORLDWIDE ENGINEERING STANDARDS
GMW3110
8.8.5.2 SecurityAccess (sendKey) Positive Response. 
In the following example (Table 107), it is assumed:
•
The node is programmable (supports mode $27).
•
The tester has already requested a seed and calculated the corresponding key.
•
$ccdd is a valid key value for the target node.
•
The node has a USDT physical request CANId of $241.
•
The node has a USDT physical response CANId of $641.
Table 107: SecurityAccess(sendKey) Positive Response
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)
$241
$04
$27
$02
$cc
$dd
---
---
---
N(USDT-SF)
$641
$02
$67
$02
---
---
---
---
---
8.8.6 Node Interface Function.
8.8.6.1 Node Interface Data Dictionary (Table 108).
Table 108: Node Interface Data Dictionary of SecurityAccess Service Pseudo Code
Variable/Meaning
Values
message_data_length
Security_Access_Unlocked
TesterPresent_Timer_State