SSF14230路车诊断系统英文(pdf 58页)

Table of Content
1. SCOPE...................................................................................................................................... 1
2. NORMATIVE REFERENCE ....................................................................................................... 2
3. PHYSICAL TOPOLOGY ............................................................................................................ 3
4. MESSAGE STRUCTURE........................................................................................................... 4
4.1 Header............................................................................................................................ 4
4.1.1 Format byte.............................................................................................................. 4
4.1.2 Target address byte ................................................................................................. 5
4.1.2.1 Physical addressing.......................................................................................... 5
4.1.2.2 Functional addressing ...................................................................................... 5
4.1.3 Source address byte ................................................................................................ 5
4.1.4 Length byte .............................................................................................................. 5
4.1.5 Use of header bytes................................................................................................. 6
4.2 Data Bytes....................................................................................................................... 6
4.3 Checksum Byte ............................................................................................................... 6
4.4 Timing ............................................................................................................................. 7
4.4.1 Timing Exceptions.................................................................................................... 9
4.4.2 Periodic transmission ............................................................................................... 9
4.4.3 Server (ECU) Response Data Segmentation ......................................................... 12
4.5 End Of Message............................................................................................................ 12
5. COMMUNICATION SERVICES................................................................................................ 13
5.1 StartCommunication Service ......................................................................................... 14
5.1.1 Service Definition ................................................................................................... 14
5.1.1.1 Service Purpose ............................................................................................. 14
5.1.1.2 Service Table ................................................................................................. 14
5.1.1.3 Service Procedure .......................................................................................... 14
5.1.2 Implementation ...................................................................................................... 14
5.1.2.1 Key bytes........................................................................................................ 15
5.1.2.2 Fast Initialisation............................................................................................. 17
5.2 StopCommunication Service.......................................................................................... 19
5.2.1 Service Definition ................................................................................................... 19
5.2.1.1 Service Purpose ............................................................................................. 19
5.2.1.2 Service Table ................................................................................................. 19
5.2.1.3 Service Procedure .......................................................................................... 19
5.2.2 Implementation ...................................................................................................... 20
5.3 AccessTimingParameter Service................................................................................... 21
5.3.1 Service Definition ................................................................................................... 21
5.3.1.1 Service Purpose ............................................................................................. 21
5.3.1.2 Service Table ................................................................................................. 21
5.3.1.3 Service Procedure .......................................................................................... 22
5.3.2 Implementation ...................................................................................................... 23
5.4 SendData Service.......................................................................................................... 25
5.4.1 Service Definition ................................................................................................... 25
5.4.1.1 Service Purpose ............................................................................................. 25
5.4.1.2 Service Table ................................................................................................. 25
5.4.1.3 Service Procedure .......................................................................................... 25
5.4.2 Implementation ...................................................................................................... 26
6. ERROR HANDLING................................................................................................................. 27
6.1 Error handling during physical/functional Fast Initialisation............................................ 27
6.1.1 Client (tester) Error Handling during physical/functional Fast Initialisation ............. 27
6.1.2 Server (ECU) Error Handling during physical Fast Initialisation.............................. 27
6.1.3 Server (ECU) Error Handling during functional Fast Initialisation ........................... 28
6.2 Error handling after Initialisation .................................................................................... 28
6.2.1 Client (tester) communication Error Handling......................................................... 28
6.2.2 Server (ECU) communication Error Handling. physical addressing........................ 29
6.2.3 Server (ECU) Error Handling, functional addressing .............................................. 29
1. DEFINITIONS............................................................................................................................ 1
1.1 Random response time.................................................................................................... 1
1.2 Start bit detection............................................................................................................. 1
1.3 Transmission latency....................................................................................................... 1
1.4 Collision detection ........................................................................................................... 1
2. MAINSTREAM COMMUNICATION............................................................................................ 1
1. PHYSICAL ADDRESSING......................................................................................................... 1
1.1 Physical addressing - single positive response message ................................................ 1
1.2 Physical addressing - more than one positive response message................................... 3
1.3 Physical addressing - periodic transmission .................................................................... 5
2. FUNCTIONAL ADDRESSING.................................................................................................... 7
2.1 Functional addressing - single positive response message -
single server (ECU) addressed.............................................................................................. 7
2.2 Functional addressing - more than one response message -
single server (ECU) addressed.............................................................................................. 9
2.3 Functional addressing - single positive response message -
more than one server (ECU)................................................................................................ 11
2.4 Functional addressing - more than one response message -
1. PHYSICAL INITIALISATION - MORE THAN ONE SERVER (ECU) INITIALISED ..................... 1
2. PERIODIC TRANSMISSION MODE........................................................................................... 4
2.1 Message Flow Example A ............................................................................................... 4
2.2 Message Flow Example B ............................................................................................... 5
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