Measurement-computing DBK70 Instrukcja Użytkownika Strona 85
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DBK70 User’s Manual 918692 Deciphering PID Messages 7-1
Deciphering the PID $00, $20, and $40 Messages 7
Note: This chapter applies only to J1850, ISO 9141, ISO 14230-4, and OBD CAN.
PID $00, $20, and $40 are legislated PIDs that return a bit-map message indicating which of the other
legislated PIDs are supported by the vehicle. Typically, these three PIDs return a 32-bit value, with each bit
location representing a legislated PID.
To record the PID $00 [or $20, or $40] value, assign the PID to an output channel of the DBK70. Then
with the PC attached and running the configuration software, connect the DBK70 to the vehicle. When the
value is displayed on the PC screen, enter the decimal value into a calculator capable of decimal to binary
conversion. Each bit in the binary number represents a legislated PID value. If the bit has a value of 1, the
PID is supported. If the value is 0, the PID is not supported.
The PID $00 [or $20, or $40] message from the vehicle never changes, so once it has been read and
recorded, the DBK70 output can be assigned to another useful PID.
PID $00 value from vehicle
(decimal)
- *372538B-01* 1
- Table of Contents 3
- (p/n 1056-0902) 4
- Unpacking the DBK70 1 5
- 919192 DBK70 User’s Manual 6
- 946898 Introduction 2-1 7
- 946898 Introduction 2-3 9
- 946898 DBK70 User’s Manual 10
- System Setup 3 11
- Configuring a DBK70 12
- Differential Measurements 13
- Single-Ended Measurements 13
- 927994 DBK70 User’s Manual 14
- 927994 System Setup 3-5 15
- 927994 System Setup 3-7 17
- Hardware Reference 4 19
- Network Port 20
- P1 Multiplexed Output Port 21
- Power Issues 22
- LED Operation 22
- [Included] 24
- [Included] 24
- [Optional] 25
- Chassis Label 27
- Card Installation 28
- Analog Output Cards 29
- 919092 DBK70 User’s Manual 30
- Contents 31
- Parsing Serial Strings 5-34 32
- Introduction 33
- Features of PidPRO 34
- Database Concepts 35
- PidPRO Quick-Start 36
- 919092 5-7 37
- PidPRO+ Only 38
- Database Management 39
- 919092 PidPRO & PidPRO+ 40
- Reference Guide 41
- Database Menu 42
- 919092 5-13 43
- Set Channel Update Rate 45
- Communications Menu 46
- Connect 46
- Set COM Port 46
- Database Item View Window 47
- Detailed View 49
- Source Channel 50
- Message Send Rate 50
- Msg 1 and Msg 2 51
- Data Length (bits) 53
- Byte Order 53
- 919092 5-25 55
- Low Limit / High Limit 56
- Units/Bit 56
- Binary Point 56
- Set to Limits (Button) 56
- Range Low / Range High 57
- Summary View 58
- PidPRO+ Only 61
- Clear Text Window 63
- Begin Monitoring 63
- Stop Monitoring 63
- Send Outgoing Message 63
- Close Monitor 63
- Parsing Serial Strings 64
- LogView 65
- General Operation 67
- 928494 DBK70 User’s Manual 68
- Example Setup from SAE J2190 72
- Using Diagnostic Data Packet 74
- Data Frame 78
- Creating a Request Message 82
- J1939 Considerations 83
- OBD CAN Considerations 84
- Supported Standards 84
- PID $00 value from vehicle 85
- (decimal) 85
- 918692 DBK70 User’s Manual 86
- Troubleshooting 8 95
- Hardware Related Steps 96
- Physical 97
- Environmental 97
- Electrical 97
- Analog Outputs 97
- Software Requirements 97
- 948796 DBK70 User’s Manual 98
- Appendix A A 99
- 919092 Appendix A 100
- Vehicle Network Interface 101
- WARNING 102
- CAUTION 102
- Preparation 102
- Replacing the Chip at U8 103
- Replacing the Chip at U9 103
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