Contents
INTRODUCTION.....................................................................................................................................................................................................1
1. FEATURES ...........................................................................................................................................................................................................1
2. TECHNICAL INDICATORS ...............................................................................................................................................................................2
2.1 PIN DESCRIPTION ..............................................................................................................................................................................................2
2.2DIMENSION........................................................................................................................................................................................................3
2.3CONNECTION METHOD .......................................................................................................................................................................................4
3. NETWORK BASIC FUNCTION INTRODUCTION...........................................................................................................................................4
3.1 IP ADDRESS/SUBNET MASK/GATEWAY................................................................................................................................................................4
3.2 DNS SERVER ADDRESS ......................................................................................................................................................................................5
4. SOCKET CHARACTERISTICS...........................................................................................................................................................................6
4.1 TCP SERVER CHARACTERISTICS ........................................................................................................................................................................6
4.2 TCP CLIENT CHARACTERISTICS.........................................................................................................................................................................7
4.3 UDP SERVER CHARACTERISTICS........................................................................................................................................................................7
4.4 UDP CLIENT CHARACTERISTICS ........................................................................................................................................................................7
5. SPECIAL FUNCTION .........................................................................................................................................................................................7
5.1 SHORT CONNECTION ..........................................................................................................................................................................................7
5.2 REGISTRATION PACKET MECHANISM ..................................................................................................................................................................8
5.3 HEARTBEAT MECHANISM ...................................................................................................................................................................................8
5.4 OVERTIME RESTART...........................................................................................................................................................................................8
5.5 TCP MULTI-CONNECTION FUNCTION ................................................................................................................................................................9
5.6 CLEARING CACHED DATA .................................................................................................................................................................................9
5.7 LINK AND DATA TRANSFER INSTRUCTIONS ..........................................................................................................................................................9
5.8 RESTORE FACTORY SETTING ...............................................................................................................................................................................9
6. QUICK INSTRUCTIONS..................................................................................................................................................................................10
6.1 PARAMETER SETTING INSTRUCTIONS.......................................................................................................................................................10
6.2 SOCKET INSTRUCTIONS ..............................................................................................................................................................................12
6.2.1 TCP Server instructions ..........................................................................................................................................................................12
6.2.2 TCP Client instructions...........................................................................................................................................................................14
6.2.3 UDP Server instructions..........................................................................................................................................................................17
6.2.4 UDP Client instruction............................................................................................................................................................................20
6.3 SPECIAL FUNCTION INSTRUCTIONS ...........................................................................................................................................................21
6.3.1 Short connection instructions..................................................................................................................................................................21
6.3.2 Registration packet instructions ..............................................................................................................................................................22
6.3.3 Heartbeat packet instructions..................................................................................................................................................................24
6.3.4 Clearing cache instructions .....................................................................................................................................................................25
7. AT COMMAND........................................................................................................................................................................... 25
7.1 AT COMMAND INTRODUCTION................................................................................................................................................. 25
7.2 AT COMMAND ERROR CODE..................................................................................................................................................... 25
7.3 AT COMMAND ......................................................................................................................................................................... 26
8. NOTE ........................................................................................................................................................................................... 30
9. IMPORTANT NOTES ................................................................................................................................................................. 31
10. ABOUT US................................................................................................................................................................................ 31