Shandong USR IOT Technology Limited USRGM3 사용자 설명서
USR-GM3/GM3s User Manual
Jinan USR IOT Technology Limited
2 / 55
tec@usr.cn
Content
USR-GM3/GM3s User Guide......................................................................................................................................... 1
Quick Start.........................................................................................................................................................................3
1.1. Testing environment......................................................................................................................................... 3
1.2. Transmission..................................................................................................................................................... 4
2. Introduction................................................................................................................................................................... 6
2.1. Short Description.............................................................................................................................................. 6
2.2. Characteristic.................................................................................................................................................... 6
2.3. Features.............................................................................................................................................................6
2.4. Application Field................................................................................................................................................7
3. Hardware.......................................................................................................................................................................8
3.1. Pin Description..................................................................................................................................................8
3.1.1. Outside View..........................................................................................................................................8
3.1.2. Pin Assignment（Top）....................................................................................................................... 8
3.1.3. PCB Layout............................................................................................................................................ 8
3.1.4. Pin Description.......................................................................................................................................9
3.1.5. Outside Antenna.................................................................................................................................. 11
3.2. Hardware Block Diagram.............................................................................................................................. 11
4. Module Functions...................................................................................................................................................... 11
4.1. Work Mode...................................................................................................................................................... 12
4.1.1. Switching Work Mode.........................................................................................................................12
4.1.2. Network transmission......................................................................................................................... 12
4.1.3. HTTPD Function................................................................................................................................. 20
4.1.4. SMS Message Transmission.............................................................................................................23
4.2. Register Package........................................................................................................................................... 27
4.2.1. Description........................................................................................................................................... 28
4.2.2. Usage....................................................................................................................................................28
4.3. Heart Beat Package.......................................................................................................................................29
4.3.1. Description........................................................................................................................................... 30
4.3.2. Usage....................................................................................................................................................30
4.4. UART................................................................................................................................................................31
4.4.1. RS485...................................................................................................................................................32
4.4.2. Similar RFC2217.................................................................................................................................32
5. Parameters Setting....................................................................................................................................................33
5.1. Operating AT command.................................................................................................................................34
5.2. AT Command Format.....................................................................................................................................35
5.3. AT Command Set........................................................................................................................................... 37
Appendix A: Contact...................................................................................................................................................... 54
Appendix B: Disclaimer.................................................................................................................................................55
Appendix C: Update History......................................................................................................................................... 55