1.What is the AT command?
AT command is used for controlling module. You can use AT command to configure and query the settings.
For USR device is in transparent mode normally, you must enter AT command mode at first. Then you can send AT command to configure or query the settings. After you configure the USR device, you should restart the USR device to make the settings take effect. Every time module restart will work in work mode rather AT command mode. Every AT command must add character carriage return
3.AT command set
Command | Function |
E | Query/Set AT command echo |
Z | Restart the USR device |
VER | Query firmware version |
ENTM | Exit serial AT command mode and enter work mode |
MAC | Query MAC address |
RELD | Restore factory settings |
WANN | Query/Set WAN port parameters |
DNS | Query/Set DNS address |
WEBU | Query/Set settings web server username and password |
WEBPORT | Query/Set settings web server port number |
SEARCH | Query/Set search port and keyword in LAN |
PLANG | Query/Set default language of` web server |
UART1 | Query/Set serial port parameters |
UARTTL1 | Query/Set serial package time and length |
SOCKA1 | Query/Set socket A parameters |
SOCKB1 | Query/Set socket B parameters |
SOCKLKA1 | Query socket A connection status |
SOCKLKB1 | Query socket B connection status |
WEBSOCKPORT1 | Query/Set serial port websocket port number |
REGEN1 | Query/Set serial port identity packet enable/disable |
REGTCP1 | Query/Set serial port Sending Method of identity packet |
REGUSR1 | Query/Set serial port User's identity packet data |
REGCLOUD1 | Query/Set serial port USR Cloud ID and password |
HTPTP1 | Query/Set serial port https method |
HTPURL1 | Query/Set serial port URL |
HTPHEAD1 | Query/Set serial port https header |
HTPCHD1 | Query/Set serial port filtering https header of response data enabled/ disabled |
HEARTEN1 | Query/Set serial port heartbeat packet enabled/disabled |
HEARTTP1 | Query/Set serial port type of heartbeat packet |
HEARTDT1 | Query/Set serial port user’s heartbeat packet data |
HEARTTM1 | Query/Set serial port heartbeat packet interval time |