USR IOT USR-DR502-E, Руководство пользователя

Страница: 23 / 32

USR-DR502-E User Manual Technical Support:
h.usriot.com
Jinan USR IOT Technology Limited www.pusr.com
23

Set by AT command:
Command Operation
1 +++a Enter AT command mode
2 AT+HEARTEN=ON Enable heartbeat package function
3 AT+HEARTTP=NET Send the heartbeat package to network side
4 AT+HEARTSORT=USER Set the type to User-defined
5 AT+HEARTDT=7777772E7573722E6
36E Set the User-defined data in HEX.
6 AT+HEARTTM=30 Set the heartbeat interval
You also need to set the socket parameters. After setting all parameters, save and restart the modem.
Note:
1, Network heartbeat package: In transparent mode, it will only be sent when there is no data sent to network
within one heartbeat interval.
2, Serial heartbeat package: In transparent mode, it will always be sent to serial port according to the set
interval.
6.3. Socket Distribution Protocol
USR-DR502-E supports socket distribution protocol. When a device is connected to multiple sockets, can
send different serial data to different servers via this protocol. Data returned from different server will also be
sent to the serial port with the socket distribution protocol.
For detailed protocol, please refer to another document:
socket distribution protocol.