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Appendix I AT Commands
1.
Basic Setting
Configuration Item
AT Command
Description
Device ID
AT+IDNT=x
X: device ID
Example
:
AT+IDNT=12345678
Modbus work mode
AT+MBCHNNL=x
Set Modbus work mode
X: 0 disable MODBUS
1 Network RTU
Example
:
AT+MBCHNNL=1
Device SIM Number
AT+SIMNO=xx
Set SIM Card No.
Xx: the max length is 19
Example
:
AT+SIMNO=13812345678
Modbus Device Address
(
1-255
)
AT+MBADDR=xx
Set the Modbus Device Address
Xx: device address
Example
:
AT+MBADDR=2
Work Mode
AT+PROTTXT=xx
Set Work Mode
Xx: 0 DTU
1 MODEM
Example: AT+PROTTXT=0
Modbus Update Interval
AT+MBUPSEC=xx
Xx: Second value
Example: AT+MBUPSEC=10
RTC Setting
AT+EXCCLK=XX
Example:
AT+EXCCLK=2019/04/19,16:51:00,5
2.
Com Setting
Configuration Item
AT Command
Description
Function switch
AT+COMIFENyy=xx
yy:
1=RS232-1
2=RS485-0
xx:
0=disable
1=enable
Example: AT+COMIFEN01=0
yy: