USR-DR502-E User Manual
Technical Support:
Jinan USR IOT Technology Limited
www.pusr.com
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6.7. NTP
USR-DR502-E supports connecting to the NTP server for time synchronization.
This function defaults to be disabled, support connecting to up to 4 NTP servers. User can send “AT+CCLK” or
“AT+CCLK?” to query the current time.
Set by the utility:
Set by AT commands:
Command
Operation
1
+++a
Enter serial AT command mode
2
AT+NTPEN=ON
Enable NET function
3
AT+NTPSVR=cn.ntp.org.cn,us.ntp.org.c
n
Set the NTP server address
4
AT+NTPTM=60
Set the NTP calibration interval
5
AT+S
Save all parameters and restart
