CAI JINYONG
2018-3-30
CHONGHAN CH-D3 WIRELESS DTU USER MANUAL
页5
Contents
Important Notice...............................................................................................................................3
Safety and Hazards............................................................................................................................3
Limitations of Liability .......................................................................................................................3
Copyright...........................................................................................................................................4
Trademarks........................................................................................................................................4
Contact Information..........................................................................................................................4
Contents ............................................................................................................................................5
1. Overview ...................................................................................................................................7
1.1. Document History .....................................................................................................7
1.2. References.................................................................................................................7
1.3. Abbreviations ............................................................................................................7
1.4. Products List ..............................................................................................................8
1.5. Presentation Rules ....................................................................................................8
1.6. Character Type ..........................................................................................................8
1.7. AT+I Command Syntax...............................................................................................8
2. Introduction ..............................................................................................................................9
2.1. Features.....................................................................................................................9
2.2. Application ................................................................................................................9
3. Basics.......................................................................................................................................10
3.1. Hardware Connection .............................................................................................10
3.2. Software Tools.........................................................................................................11
3.3. Mode Switch Command..........................................................................................11
4. Configure DTU .........................................................................................................................12
4.1. TCP Transmit............................................................................................................12
4.1.1. TCP Client Always Online.................................................................................12
4.1.2. TCP Client Trigger online .................................................................................12
4.1.3. TCP Client Step by Step ...................................................................................12
4.1.4. TCP Server .......................................................................................................12
4.2. UDP Transmit...........................................................................................................13
4.2.1. UDP Always Online ..........................................................................................13
4.2.2. UDP Trigger Online ..........................................................................................13
4.2.3. UDP Step by Step.............................................................................................13
5. Common Function...................................................................................................................13
5.1. Ping..........................................................................................................................13
5.2. Baud Rate ................................................................................................................14
5.3. Setup APN or VPDN.................................................................................................14
5.3.1. Setting APN Configuration...............................................................................14
5.3.2. Setting VPDN Configuration ............................................................................15
5.4. Transmit Mode ........................................................................................................15
5.5. Hardware Flow Monitor ..........................................................................................15
5.6. Software Flow Monitor ...........................................................................................16
