HF2111 GPRS Serial Server User Manual
Shanghai High-Flying Electronics Technology Co., Ltd
10/29
2. FUNCTION DESCRIPTION
2.1. Wireless Networking
Product is connected with serial devices and GPRS network and communicate with
remote server through public network. It is suggested to use build-in TCP/IP protocol
stack to achieve remote control and monitor through UDP/TCP connection with server.
Figure 5.
GPRSwireless network
2.2. Work Mode
2.3.1. Support single and multiple connecton
Single connection: build only one connection (UDP/TCP)
Multiple connection: maximum eight connections (UDP/TCP, AT+SOCKA, AT+SOCKB,
AT+SOCKC)
Note:
Recommend to send UART data every 1000ms to device, otherwise may lost some
packet.
