OBDLink® Family Reference and Programming Manual (FRPM) OBDLink Family Table of Contents 1.0 Overview .......................................................................................................................................................... 4 2.0 Objective of This Manual ................................................................................................................................. 4 3.0 OBDLink Product Family .................................................................................................................................. 4 3.1 OBDLink Devices ........................................................................................................................................ 4 3.2 OBDLink ICs ................................................................................................................................................ 5 4.0 Feature Highlights ............................................................................................................................................ 5 5.0 Typical Applications ......................................................................................................................................... 5 6.0 Communicating with the OBDLink ................................................................................................................... 6 7.0 AT Commands ................................................................................................................................................. 7 7.1 AT Command Summary .............................................................................................................................. 7 7.2 AT Command Descriptions ........................................................................................................................ 10 7.3 Programmable Parameters ....................................................................................................................... 17 8.0 ST Commands ............................................................................................................................................... 20 8.1 ST Command Summary ............................................................................................................................ 20 8.2 General ST Commands ............................................................................................................................. 24 8.3 UART Specific ST Commands .................................................................................................................. 24 8.4 Device ID ST Commands .......................................................................................................................... 26 8.5 Voltage ST Commands ............................................................................................................................. 27 8.6 OBD Protocol ST Commands .................................................................................................................... 27 8.7 ISO Specific ST Commands ...................................................................................................................... 29 8.8 CAN Specific ST Commands .................................................................................................................... 31 8.9 Monitoring ST Commands ......................................................................................................................... 32 8.10 Filtering ST Commands ............................................................................................................................. 32 8.11 PowerSave ST Commands ....................................................................................................................... 34 8.12 Bluetooth Specific ST Commands ............................................................................................................. 37 8.13 General Purpose I/O ST Commands ........................................................................................................ 38 8.14 Periodic Messaging ST Commands .......................................................................................................... 38 9.0 Error Messages .............................................................................................................................................. 40 10.0 OBD Requests ............................................................................................................................................... 41 11.0 OBD Message Filtering .................................................................................................................................. 42 11.1 Non-CAN Protocols ................................................................................................................................... 42 11.2 CAN Protocols ........................................................................................................................................... 44 12.0 ISO 15765 Message Reception ..................................................................................................................... 45 13.0 CAN Addressing Formats .............................................................................................................................. 47 13.1 Normal ....................................................................................................................................................... 47 13.2 Normal fixed............................................................................................................................................... 47 13.3 Extended .................................................................................................................................................... 47 13.4 Mixed ......................................................................................................................................................... 47 14.0 SAE J1939 ..................................................................................................................................................... 48 15.0 PowerSave Functionality ............................................................................................................................... 52 15.1 Control Modes ........................................................................................................................................... 52 15.1.1 Native PowerSave Mode .................................................................................................................. 52 15.1.2 ELM327 Low Power Mode ................................................................................................................ 52 15.2 Sleep Triggers ........................................................................................................................................... 52 15.2.1 STSLEEP and ATLP Commands ..................................................................................................... 52 15.2.2 UART Inactivity ................................................................................................................................. 53 15.2.3 External SLEEP Input ....................................................................................................................... 53 15.2.4 Voltage Level Sleep .......................................................................................................................... 53 15.3 Wakeup Triggers ....................................................................................................................................... 53 15.3.1 UART Rx Pulse Wakeup................................................................................................................... 54 15.3.2 External SLEEP Input Wakeup ......................................................................................................... 54 15.3.3 Voltage Level Wakeup ...................................................................................................................... 54 15.3.4 Voltage Change Wakeup .................................................................................................................. 54 15.4 Voltage Trigger Considerations ................................................................................................................. 55 15.5 External Power Control Output .................................................................................................................. 55 15.6 Device Specific Details .............................................................................................................................. 55 2 of 60 www.obdsol.com OBDLinkFRPMD Reference and Programming Manual 15.6.1 OBDLink Hardware Rev 1.x .............................................................................................................. 55 15.6.2 OBDLink Hardware Rev 2.0 - 2.4 ..................................................................................................... 55 15.6.3 OBDLink Hardware Rev 2.5 and Above ........................................................................................... 56 15.6.4 OBDLink S ........................................................................................................................................ 56 15.6.5 OBDLink SX Rev 1.x ........................................................................................................................