HF HF2411 - At+Netplk; At+Tcpto

4G_2G DTU Products Function
http://www.iotworkshop.com - 40 -
 WEBSOCKET: WebSocket mode, only Socket A support this
 MQTT: MQTT mode, only Socket A support this
◆ iP: Target IP address, support domain name, max 50 bytes, default
【nat2.iotworkshop.com】
◆ port: Protocol port number, decimal number, 1 to 65535, default【3006】.
◆ mode: TCP connection type. This parameter is available only in TCP or HTTP mode. The
default 【long】, includes the following parameters.
 Long: Long connection.
 Short: Short connection. connection is established when data is sent, and time is
disconnected when there is no data.
◆ time: TCP short connection disconnection delay time, this parameter is only available
under short connection, the range is 1~100 seconds, the default is 【3】seconds.
Commend example:
1、 SOCKA is set to TCP communication
a) Long connection: AT+NETP=A,1,TCP,nat2.iotworkshop.com,3006,long
b) Short connection: AT+NETP=A,1,TCP,nat2.iotworkshop.com,3006,short,3
2、 SOCKA is set to WebSocket, MQTT
a) AT+NETP=A,1,WEBSOCKET,123.56.240.XX,1883
b) AT+NETP=A,1,MQTT,123.56.240.XX,1883
3、 SOCKB is set to UDP communication
a) AT+NETP=B,1,UDP,nat2.iotworkshop.com,3008
2.4.2.20. AT+NETPLK
◼ Function: Set/query communication channel TCP connection status
◼ Format:
◆ Query Operation:
AT+NETPLK=<id><CR>
+ok=<id,status><CR><LF><CR><LF>
◆ Set Operation:
AT+NETPLK=<id,value><CR>
+ok<CR><LF><CR><LF>
◼ Parameter:
◆ id: Communication channel number, including the following parameters.
⚫ A: Socket A channel.
⚫ B: Socket B channel.
⚫ C: Socket C channel.
◆ status: Connection status.
⚫ On: Connected
⚫ Off: Not connected, default【off】
◆ value: Manually open/close TCP connection.
⚫ on: Start TCP connection
⚫ off: Close TCP connection
2.4.2.21. AT+TCPTO
◼ Function: Set/Query socket TCP timeout; Setting is valid after reset.
◼ Format:
◆ Query Operation:
AT+TCPTO=<id><CR>
+ok=<id,time><CR><LF><CR><LF>
◆ Set Operation:
AT+TCPTO=<id,time><CR>
+ok<CR><LF><CR><LF>
◼ Parameter:
◆ id: Communication channel number, including the following parameters.
⚫ A: Socket A channel.