User's Manual
Table Of Contents
- USR-G786-G User Manual
- 1.Introduction
- 2.Get Started
- 3.Utility Configuration
- 4.Serial Port
- 5.Selecting an Operating Mode
- 6.General Function
- 7.AT Command Set
- 7.1.AT Command Examples
- 7.2.AT Command Set
- 7.2.1.AT
- 7.2.2.AT+H
- 7.2.3.AT+Z
- 7.2.4.AT+E
- 7.2.5.AT+ENTM
- 7.2.6.AT+WKMOD
- 7.2.7.AT+CMDPW
- 7.2.8.AT+STMSG
- 7.2.9.AT+RSTIM
- 7.2.10.AT+CSQ
- 7.2.11.AT+SYSINFO
- 7.2.12.AT+UCPIN
- 7.2.13.AT+RELD
- 7.2.14.AT+CLEAR
- 7.2.15.AT+CFGTF
- 7.2.16.AT+VER
- 7.2.17.AT+SN
- 7.2.18.AT+ICCID
- 7.2.19.AT+IMEI
- 7.2.20.AT+CIP
- 7.2.21.AT+LBS
- 7.2.22.AT+CCLK
- 7.2.23.AT+PING
- 7.2.24.AT+UART
- 8.Contact Us
- 9.Disclaimer
- 10.Update History
USR-G786-G User Manual Technical Support: h.usriot.com
Jinan USR IOT Technology Limited www.usriot.com
48
OK
Operate successfully
No
CR
Carriage Return
Yes
LF
Line Feed
Yes
Response command type description:
Figure 13 The description of string format
Type
String Format
Description
0
<CR><LF><OK><CR><LF>
Means command
send success
1
<CR><LF><+CMD:><PARA><CR><LF><CR><LF><OK><CR><LF>
Return current
parameters
7.1.4.4 Special symbols
In AT commands, “=”, “,”, “?”, carriage return, line feed are special symbols, so the parameter can not directly
contain “=”, “,”, “?”. All need to be escaped.
Escape rule: use [] to enclose the hexadecimal code of a special symbol, representing the ASCII code
represented by an input hexadecimal code.
E. g:
“?”: The hexadecimal encoding of 0x3F is expressed as [3F] after escaping by this escape method.
Symbol
Implication
Escape characters
=
Equal sign
[3D]
,
Comma
[2C]
?
Question mark
[3F]
<CR>
Enter key
[0D]
<LF>
Line break
[0A]
7.2. AT Command Set
Figure 15 AT command error code
Code
Implication
Err1
Does not conform to the AT commands format, is not the beginning of AT
Err2
The AT command was not found and does not exist
Err3
Not meet the format of query or
s
ettings
Err4
Wrong parameters or number
Err5
Setting parameter failed
Figure 16 AT commands
Command
Command description
Executive command