USR-DR504-E User Manual
Jinan USR IOT Technology Limited
Tech Support: h.usriot.com
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44. AT+HEARTSND
Function: Query/Setting the type of heartbeat’s sending type.
Format:
Query current Parameter:
AT+HEARTSND{CR} or AT+HEARTSND?{CR}
{CR}{LF}+HEARTSND:type{CR}{LF}{CR}{LF}
Setting:
AT+HEARTSND=type{CR}
{CR}{LF}OK{CR}{LF}
Parameter:
type: sending type , include:
COM: Send heartbeat package to serial port.
NET: Send heartbeat packet to network side.
Default is NET
。
For example: AT+HEARTSND =COM
45. AT+HEARTTM
Function: Query/Setting the interval time for heartbeat interval
Format:
Query current Parameter:
AT+HEARTTM{CR} or AT+HEARTTM?{CR}
{CR}{LF}+HEARTTM:time{CR}{LF}{CR}{LF}
Setting:
AT+HEARTTM=time{CR}
{CR}{LF}OK{CR}{LF}
Parameter:
time: interval time , It can setting the range about 1~6000s , default is 30s.
For example: AT+HEARTTM=60
46. AT+DSTNUM
Function: Query/Setting the target cell phone number for short message transparent transmissions
Format:
Query:
AT+DSTNUM{CR} or AT+DSTNUM?{CR}
{CR}{LF}+DSTNUM: number{CR}{LF}
Setting:
AT+DSTNUM=number{CR}
{CR}{LF}OK{CR}{LF}
Parameter:
number: SMS target phone number, note add international number, the default number is 4000255652, up to
