9.1.1 普通 TCP/TP 发送步骤
AT+CGDCONT=1,“IP”,“CMNET” //设置 APN
OK
AT+CSQ //查询信号
+CSQ: 31,99
OK
AT+CREG? //查注册网络状态
+CREG: 0,1
OK
AT+CPSI? //注册信息
+CPSI: LTE,Online,460-01,0x5303,52467969,125,EUTRAN-BAND3,1650,5,5,-84,-693,-386,24
OK
AT+CGREG?
+CGREG: 0,1
OK
AT+CIPMODE=1 //设置 TCP/IP 模式
OK
AT+CSOCKSETPN=1
OK
AT+CIPMODE=0
OK
AT+NETOPEN
OK
+NETOPEN: 0
AT+CIPOPEN=0,“TCP”,“211.149.158.237”,8011 设置 TCP 、IP 和端口号
OK
+CIPOPEN: 0,0
AT+CIPSEND=0,5 //发数据数据 5 是数据格式 发送 HELLO
>HELLO
OK
+CIPSEND: 0,5,5
RECV FROM:211.149.158.237:8011
+ IPD19
HOE-7600CE-TCP-TEST //服务器发回的数据
AT+CIPCLOSE=0//结束 TCP 连接
OK
CLOSED
+ CIPCLOSE: 0,0
AT+NETCLOSE// Close socket
OK
+NETCLOSE: 0
9.1.2 TCP/IP 透传模式发送数据
AT+CGDCONT=1,“IP”,“CMNET”
OK
AT+CIPMODE=1
OK
AT+NETOPEN
OK
+NETOPEN: 0
AT+CIPOPEN=0,“TCP”,“211.149.158.237”,8011
CONNECT 115200
进入串口透传模式，此时串发过来的任何数据均直接发到服务器上（除+++外）
服务器发过来的数据：
服务器返回数据 HOE-7600CE-TCP-TEST
+++ 退出透传指令不带回车，发过去串口返回 OK 表示退出透传
OK
ATO// 重新进入透传
CONNECT 115200
又可以发数据了
如果透传 TCPIP 连接 先发送+++返回 OK 后发送如下指令
OK
CLOSED
+CIPCLOSE: 0,0
AT+NETCLOSE// Close socket
OK
+NETCLOSE: 0
//ensure GPRS network is available before
AT+CSQ
+CSQ: 23,0
OK
AT+CREG?
+CREG: 0,1
OK
AT+CPSI?
+CPSI: GSM,Online,460-00 0x1816,63905,81 EGSM 900,-68,0,31-31
OK
AT+CGREG?
+CGREG: 0,1
OK
//PDP Context Enable/Disable
APN setting：
AT+CGSOCKCONT=1,"IP","CMNET"
OK
AT+CSOCKSETPN=1
OK
Note, usually CSOCKAUTH and CSOCKSETPN parameter are kept default if not care about.
Enable PDP context:
AT+CIPMODE=0 // command mode, if not configured, it is 0 by default. If customers want
data mode, please configure before Net open.
OK
AT+NETOPEN
OK
+NETOPEN: 0
AT+IPADDR
+IPADDR: 10.113.43.157
OK
Disable PDP context:
AT+NETCLOSE
OK
+NETCLOSE: 0
//Command Mode
2.3.1 TCP Client
AT+CIPOPEN=0,"TCP","116.236.221.75",8011//only IP address is supported
OK
+CIPOPEN: 0,0
AT+CIPSEND=0,5
>HELLO
OK
+CIPSEND: 0,5,5
AT+CIPSEND=0, //the second parameter is empty which means using <Ctrl+Z> to check the
end
>HELLO<Ctrl+Z>
OK
+CIPSEND: 0,5,5
AT+CIPCLOSE=0 // close by local
OK
+CIPCLOSE: 0,0
Note:
if connection closed by remote server, following URC will return:
+IPCLOSE: 0, 1
Here, the meaning of second parameter in this URC is as following,
0 - closed by local, active
1 - closed by remote, passive
3 - Reset
2.3.3 Extended Information
Command AT+CIPHEAD is used to show IP head (data length) information, and command
AT+CIPSRIP is used to show remote IP address and port once data are received.
AT+CIPHEAD=1
AT+CIPSRIP=0
AT+CIPOPEN=0,"TCP","116.236.221.75",8011
OK
+CIPOPEN: 0,0
AT+CIPSEND=0,5
>11111
OK
+CIPSEND: 0,5,5
// here, remote data is coming
+IPD13
hello from pc
AT+CIPSRIP=1
OK
// here, remote data is coming
RECV FROM:116.236.221.75:8011
+IPD15
hello from pc 2
AT+CIPCLOSE=0
OK
+CIPCLOSE: 0,0
2.3.5 Connection Status Checking
AT+CIPOPEN?
+CIPOPEN: 0
+CIPOPEN: 1
+CIPOPEN: 2
+CIPOPEN: 3
+CIPOPEN: 4
+CIPOPEN: 5
+CIPOPEN: 6
+CIPOPEN: 7
+CIPOPEN: 8
+CIPOPEN: 9
OK
AT+CIPOPEN=0,"TCP","116.236.221.75",8011
OK
+CIPOPEN: 0,0
+IPD15
hello from pc 3
AT+CIPOPEN?
+CIPOPEN: 0, "TCP","116.236.221.75",8011,-1 // last parameter of -1 indicates this
connection is active, this socket acts as a client
+CIPOPEN: 1
+CIPOPEN: 2
+CIPOPEN: 3
+CIPOPEN: 4
+CIPOPEN: 5
+CIPOPEN: 6
+CIPOPEN: 7
+CIPOPEN: 8
+CIPOPEN: 9
OK
2.4 Data Mode
2.4.1 TCP Client
AT+NETOPEN
OK
+NETOPEN: 0
AT+CIPOPEN=0,"TCP","116.236.221.75",8011//only <link_num>=0 is allowed to operate with
transparent mode.
CONNECT 115200
// sequence of +++ to quit data mode
OK
ATO // command ATO to quit command mode
CONNECT 115200
// sequence of +++ to quit data mode
OK
AT+CIPCLOSE=0
OK
CLOSED
+CIPCLOSE: 0,0
AT+NETCLOSE
OK
+NETCLOSE: 0
2.5 Switch between Data Mode and Command Mode
Hardware flow control is recommended.
Currently, USB->modem port, USB->AT port and UART port all support hardware flow control.
Software switching: escape sequence +++. Please take care, this is a complete command, do not
separate each character, also take care that the time delay before and after this sequence should be
more than 1000 milliseconds, the interval of each character should not be more than 900
milliseconds.
Hardware switching: DTR pin could be used to trigger data mode and command mode.Command
AT&D1 should be configured before application.
2 查询模块网络注册状态
AT+CPIN?
+CPIN: READY // 查询SIM 卡是否识别
OK
AT+CSQ
+CSQ: 27,99 // 查询信号强度
OK
AT+CNSMOD=1 // 设置模块网络制式状态自动上报功能
OK
AT+CNSMOD?
+CNSMOD: 0,8 // 查询模块注册网
络制式。8 表示注册在LTE 网络模式
OK
AT+CEREG?
+CEREG: 0,1 // 此时，表示可以
进行数据业务了。
OK
AT+CNSMOD?
+CNSMOD: 0,10 // 查询模块注册在非
LTE 网络下
OK
AT+CGREG?
+CGREG: 0,1 // 此时，表示可以进
行数据业务了。
OK
注意：在LTE 网络模式下，请使用AT+CEREG?判断模块数据是否可以使用。
如果是在其它网络模式下, 请使用AT+CGREG 判断模块数据是否可以使用。
参数2：返回1(或5)表示数据业务可以使用；返回2、3、4 表示数据业务不可
用。
