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ELM user manual manual available for free PDF download: Manual
ELM user manual Manual (99 pages)
OBD to RS232 Interpreter
Brand:
ELM
| Category:
Industrial Electrical
| Size: 0 MB
Table of Contents
The Basics Description
1
Features
1
Applications
1
Block Diagram
1
Connection Diagram
1
Table of Contents
2
Pin Descriptions
4
ELM327L Unused Pins
6
ELM327L Absolute Maximum Ratings
7
ELM327L Electrical Characteristics
7
Overview
9
Using the ELM327
9
Communicating with the ELM327
9
AT Commands
11
AT Command Summary
11
AT Command Descriptions
13
Reading the Battery Voltage
32
OBD Commands
33
Talking to the Vehicle
34
Bus Initiation
36
Periodic (Wakeup) Messages
36
Interpreting Trouble Codes
37
Resetting Trouble Codes
38
Quick Guide for Reading Trouble Codes
38
Selecting Protocols
39
OBD Message Formats
41
Setting the Headers
42
Multiline Responses
45
CAN Message Types
47
Multiple PID Requests
48
Response Pending Messages
48
CAN Receive Filtering - the CRA Command
49
Using the CAN Mask and Filter
50
Filtering for a Transmitter
51
Monitoring the Bus
52
Restoring Order
53
Using Higher RS232 Baud Rates
54
Setting Timeouts - the at ST and at at Commands
56
SAE J1939 Messages
57
Using J1939
59
The FMS Standard
62
The NMEA 2000 Standard
63
Altering Flow Control Messages
63
Using CAN Extended Addresses
65
CAN Input Frequency Matching
66
Programming Serial Numbers
67
Saving a Data Byte
67
The Activity Monitor
68
Power Control
68
Programmable Parameters
72
Programmable Parameter Summary
73
Maximum CAN Data Rates
79
Microprocessor Interfaces
81
Upgrading Versions
82
Example Applications
83
Modifications for Low Power Standby Operation
90
Misc. Information Error Messages and Alerts
93
Version History
96
Outline Diagrams
97
Ordering Information
97
Index
98
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