USR IOT USR-G761w User manual

USR-G761w Guide Line h.usriot.com
Jinan USR IOT Technology Limited www.usriot.com
USR-G761w Guide Line
File Version: V1.0.4.1

USR-G761w Guide Line h.usriot.com
Jinan USR IOT Technology Limited www.usriot.com
Contents
USR-G761w Guide Line.......................................................................................................................................... 1
1. Configuring methods ........................................................................................................................................ 1
1.1. Serial AT command........................................................................................................................... 1
1.2. SMS AT command ............................................................................................................................. 2
1.3. Transparent AT command................................................................................................................ 2
2. Function settings............................................................................................................................................... 3
2.1. Work mode ........................................................................................................................................ 3
2.1.1. Transparent mode..................................................................................................................... 3
5.1.1. HTTPD Client mode................................................................................................................... 5
7.1.1. SMS mode................................................................................................................................... 6
7.2. Serial Port.......................................................................................................................................... 7
7.2.1. Basic Parameters ...................................................................................................................... 7
7.2.2. Serial package methods ............................................................................................................ 7
7.2.3. RS485......................................................................................................................................... 8
7.2.4. Baud rate synchronization ....................................................................................................... 8
7.3. Other Function ................................................................................................................................ 10
7.3.1. Identity Package ...................................................................................................................... 10
7.3.2. Heartbeat package.................................................................................................................. 10
7.3.3. Upgrade firmware：................................................................................................................11
7.4. Setup software..................................................................................................................................11
7.4.1. Interface .................................................................................................................................. 12
8. AT Command Set............................................................................................................................................. 12
8.1.2. AT Command Set..................................................................................................................... 14
9. Contact Us........................................................................................................................................................ 32
10. Disclaimer................................................................................................................................................ 33
11. Update History ........................................................................................................................................ 33

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1. Configuring methods
For configuring this devices, you can use AT commands to configure it. There are 3 methods to send AT
commands.
Serial AT command
SMS AT command
Transparent AT command
Specific AT command set and format is in the last of this documents
To configure and test the module, we provide some software:
Setup software:
http://www.usriot.com/usr-g76x-setup-software/
Test Software:
http://www.usriot.com/usr-tcp-test-v1-3/
1.1. Serial AT command
When in transparent mode, SMS mode or HTTPD mode, you can enter AT command mode. Then you can send AT
command to module to configure or query the parameters. Setup software is based on this function. Your settings
will take effect after restarting.
For entering AT command mode, the steps are as follow.
1. Power up the USR-G761w, connect the antenna and serial cable.
2. Sending the “+++”to your USR-G761w with your serial, The USR-G761w will return an “a”if it receives your
“+++”.
3. Send an “a”to the USR-G761w within 3 seconds after you receive the “a“. The USR-G761w will return “+ok”if
it receives the “a”
4. Then you can send AT commands to USR-G761w. USR_G761w will return “+ok”or “+ERR”. Your command is
right and you succeed to configure the USR-G761w. You fail to configure the USR-G761w if it returns “ERR”.
5. The settings will take effect after restarting, you can send AT+Z to restart the module. After restarting,
USR-G761w will work in one of the three working modes(Transparent mode, SMS mode or HTTPD client
mode).
6. FAQ about Serial AT command:
http://www.usriot.com/enter-serial-command-mode/
In serial AT command mode, you can send AT command to configure and query parameters and status. Every
Serial AT command is end by ENTER (in HEX format that should be 0x0D 0x0A). To query the serial parameters,
you should send this command.

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AT+UART
1.2. SMS AT command
If your USR-G761w is in fields or you don’t know the serial parameters, you can use SMS AT command to
configure the USR-G761w. The SMS AT command format is as follow. Your settings will take effect after restarting.
Passwords#AT command
For example, you can send the command below to query the serial parameters of the USR-G761w
www.usr.cn#AT+UART
www.usr.cn are default passwords, you can modify it to your own password. AT+UART is the AT command for
query the serial parameters. There should be ‘#’between the password and command.
To modify the passwords, you can use AT+CMDPW.
1.3. Transparent AT command
When module is in transparent mode, you can you transparent AT command to configure or query parameters via
network or serial. The format is as follow. Your settings will take effect after restarting.
Passwords#AT command
For example, if you want to query serial parameters via network or serial, you can use the command below.
www.usr.cn#AT+UART
www.usr.cn are default passwords, you can modify it to your own password. AT+UART is the AT command for
query the serial parameters. There should be ‘#’between the password and command.
To modify the command passwords, you can use AT+CMDPW.

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2. Function settings
Every time USR-G761w power on, it will work in work mode (Transparent mode, SMS mode or HTTPD client
mode). Then you can AT command mode and use AT command to configure it. Your new parameters will take
effect after restarting.
If your command have no reply, please check whether you add an ENTER after every command.
2.1. APN
Different operator have different APN(access point name), If you use the SIM card from the operator. You must
know the APN. You can ask your SIM card operator for APN.
There are three parameters about APN. Those are APN, username and password. Sometimes only configure APN
is enough.
Example:
If we got the APN from China mobile, they only tell me APN. So we don’t set anything with username and password.
Set USR-G761w as follow.
AT+APN=3gnet,,
2.2. Work mode
2.2.1. Transparent mode
In this work mode, USR-G761w will make a bidirectional connection. This connection is transparent transmission.
The data is send to serial will be received in network, and vice versa.
The network connection is based on socket. There are 2 socket, socket A and socket B. Socket A and socket B are
independent. Your serial data can be sent to 2 different servers. You can configure the socket as TCP client or UDP
client.
Command Name
Command Functions
Default Parameters
AT+WKMOD
Query/Set work mode
NET

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AT+SOCKA
Query/Set socket A parameters
TCP,test.usr.cn,2317
AT+SOCKB
Query/Set socket B parameters
TCP,test.usr.cn,2317
AT+SOCKAEN
Query/Set whether enable socket A
ON
AT+SOCKBEN
Query/Set whether enable socket B
OFF
AT+SOCKASL
Query/Set whether enable socket A short connection
LONG
AT+SOCKBSL
Query/Set whether enable socket B short connection
LONG
AT+SOCKALK
Query Connection Status of socket A
NONE
AT+SOCKBLK
Query Connection Status of socket B
NONE
AT+SOCKIDEN
Query /Set if it shows socket ID function
OFF
Figure 1 AT command set
Example:
1. Set the work mode as transparent mode
AT+WKMOD=NET
2. Enable the socket A
AT+SOCKAEN=ON
3. Set socket A as TCP Client
AT+SOCKA=TCP,test.usr.cn,2317
4. Set socket A as persistent connection
AT+SOCKASL=LONG
5. Restart：
AT+Z

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5.1.1. HTTPD Client mode
In this work mode, you can configure the HTTP Header, HTTP Server address and port number of HTTP server.
Your serial data will be package as HTTP format and send to HTTP server.
The buffer of serial receiving is 1KB. Your packages can not over 1KB.
Figure 2 AT command set
Example:
1. Set as HTTPD client mode:
AT+WKMOD=HTTPD
2. Set as HTTP GET:
AT+HTPTP=GET
2. Set URL of HTTP request:
AT+HTPURL=/1.php[3F]
3. Set server of HTTP request:
AT+HTPSV=test.usr.cn,80
4. Set HTTP header:
AT+HTPHD=Connection:
close[0D][0A]
5. Set HTTP request out time:
AT+HTPTO=10
6. Whether cut off the HTTP header of response data:
AT+HTPFLT=ON
Command Name
Command Function
Default Parameters
AT+WKMOD
Query/Set Work Mode
NET
AT+ HTPTP
Query/Set HTTP Work Mode
GET
AT+ HTPURL
Query/Set URL
/1.php[3F]
AT+ HTPSV
Query/Set Address and Port of Target Server
test.usr.cn,80
AT+ HTPHD
Query/Set HTTP Protocol HEAD Information
Connection: close[0D][0A]
AT+ HTPFLT
Query/Set whether open filtering capability of HEAD
OFF
AT+HTPTO
Query/Set timeout time
10

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7. Restart the USR-G761w
AT+Z
7.1.1. SMS mode
This work mode is used to transfer your serial data to SMS which is sent to target mobile.
Figure 3 AT command set
Example:
1. Set work mode is SMS mode
AT+WKMOD=SMS
2. Set the target mobile number
AT+DSTNUM=15866668888
Command Name
Command Functions
Default Parameters
AT+WKMOD
Query/Set Work Mode
NET
AT+DSTNUM
Query/Set Target Telephone Number
4000255652
AT+SMSFLT
Query/Set whether filter source telephone number
ON
AT+SMSPH
Query/Set whether send SMS in transparent mode
OFF

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3. Whether only receive the message from target number
AT+SMSFLT=ON
4. Restart the USR-G761w
AT+Z
7.2. Serial Port
7.2.1. Basic Parameters
Name
Parameter range
Baud rate
1200，2400，4800，9600，14400，19200，38400，
57600，115200，128000，230400，460800
Data bits
7,8
Stop bits
1,2
Parity
NONE
EVEN
ODD
SPACE
Flow control
NFC: No flow control
485:Enable RS485 (terminal)
Figure 4 Serial Parameters
7.2.2. Serial package methods
For serial is slow and WCDMA network is fast, USR-G761w will receive serial data and put them in buffer. Then it
will send serial data by package. There are some methods to separate the data to packages.
7.2.2.1. Time-triggered package
Then USR-G761w receive the serial data, if there is no data for a certain period, it will make the package and send it to

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network. The default time interval is 200ms. Range is from 10ms to 60000ms. If the serial keep receiving data, this
package will be 1KB. Other data will be put in next package.
You can use AT command to modify the time interval.
AT+UARTFT=200
7.2.2.2. Length-triggered package
If your serial data over this length, it will make the package and send it to network. Other data will be put in next
package. The default length is 1024 Byte. The range is from 1 to 1024 bytes.
You can configure it via AT command
AT+UARTFL=1024
7.2.3. RS485
If you want to use RS485 (terminal) as serial port, you should enable RS485.
Whether you enable or disable this function, RS232 is available for serial.
Switch time from sending status to receiving status: 5ms
Example: Enable the RS485
AT+UART=115200,8,1,NONE,RS485
Disable the RS485:
AT+UART=115200,8,1,NONE,NFC
7.2.4. Baud rate synchronization
Protocol is 8 bytes, please refer to the form below.
Name
Header
Baud rate
Function Bits
Checksum
Bytes number
3
3
1
1
State
Fixed Header
Baud rate
Big end
Please refer to next
form
Sum of Baud
rate(3 bytes)
and Function

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bits
Example
(115200,N,8,1)
55 AA 55
01 C2 00
83
46
Example
(9600,N,8,1)
55 AA 55
00 25 80
83
28
Figure 5 Protocol Format
Bits
Stats
Value
Description
1:0
Data bits
00
5
01
6
10
7
11
8
2
Stop bits
0
1
1
2
3
Parity
0
Disable
1
Enable
5:4
Parity methods
00
ODD
01
EVEN
10
Mark
7:6
Undefined
00
0
Figure 6 Function Bits

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7.3. Other Function
7.3.1. Identity Package
Command Name
Command Function
Default Parameter
AT+ REGEN
Set/Query enable or disable the identity package
OFF
AT+ REGTP
Set/Query the identity package type
USER
AT+ REGDT
Set/Query the user-defined identity package data
7777772E7573722E636E
AT+ REGSND
Set/Query the send methods
DATA
Figure 7 AT command set
1. Enable the identity package:
AT+ REGEN=ON
2. Set identity package as user-defined:
AT+ REGTP=USER
3. Set your identity package data:
AT+REGDT=7777772E7573722E636E
4. Set identity package is in the front of every package:
AT+ REGSND=DATA
5. Restart:
AT+ Z
7.3.2. Heartbeat package
The AT command is as follow
Command
Command function
Default parameters
AT+ HEARTEN
Set/Query enable or disable the heartbeat package
OFF
AT+ HEARTDT
Set/Query heartbeat data
7777772E7573722E63
6E

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AT+ HEARTTP
Set/Query heartbeat package is sent to net or serial
NET
AT+ HEARTTM
Set/Query heartbeat interval
30
Figure 8 AT command set
Example:
1. Enable heartbeat package function
AT+ HEARTEN=ON
2. Set heartbeat package data
AT+ HEARTDT=7777772E7573722E636E
3. Set the heartbeat package is sent to network.
AT+ HEARTTP=NET
4. Set the heartbeat package time interval
AT+ HEARTTM=30
5. Restart
AT+ Z
7.3.3. Upgrade firmware：
Please refer to FAQ about upgrade firmware for USR-G761w.
7.4. Setup software
Setup software download Link: http://www.usriot.com/usr-g76x-setup-software/

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7.4.1. Interface
Figure 9 Setup Software
Setup step:
1. Choose your PC serial parameters, open the serial.
2. Click enter AT command mode button to enter serial AT command mode.
3. You can query all parameters with Get All param button.
4. You can configure the parameters on the panel.
5. Click Set Save All param to save your parameters
6. Restart the USR-G761w make new parameters take effect.
8. AT Command Set
Every AT Command will have a response from USR-G761w.
8.1.1.1. Character
Character
Meaning
Hex
<AT+>
AT Command Header
41 54 2B
<CR>
Carriage Return, 0x0D in Hex
0D

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<LF>
Line Feed, 0x0A in Hex
0A
,
Separator of multi parameters
2C
=
Separator between the command and parameters
3D
:
Between the [CMD] and [PARA]
3A
[CMD]
Command Name
ASCII
[PARA]
Parameter
ASCII
Figure 10 Character
8.1.1.2. Querying Format
<AT+>[CMD] <CR><LF>
8.1.1.3. Response format of querying
Disable the echo:
<CR><LF>+[CMD]:[PARA]
<CR><LF><CR><LF>
Enable the echo:
<AT+>[CMD]<CR><LF>+[CMD]:[PARA]
<CR><LF><CR><LF>
8.1.1.4. Setting Format
Single parameter:
<AT+>[CMD]=[PARA] <CR><LF>
Multi Parameters:
<AT+>[CMD]=[PARA0,PARA1,PARA2]
<CR><LF>
8.1.1.5. Response format of setting
Disable the echo:
<CR><LF>+OK<CR><LF><CR><LF>
Enable the echo:
<AT+>[CMD]<CR><LF>+OK
<CR><LF><CR><LF>

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8.1.2. AT Command Set
[CMD]
Function
Management Command
AT
Test command
H
Help information
Z
Restart the device
E
Query/Set whether enable the echo
ENTM
Exit the serial AT command mode
WKMOD
Query/Set work mode
CMDPW
Query/Set command passwords
STMSG
Query/Set start message
CSQ
Query RSSI
Settings Command
RELD
Reload to user default settings
CLEAR
Reload to factory settings
CFGTF
Save current settings as user default settings
Query Command
VER
Query firmware version
SN
Query SN code
ICCID
Query ICCID
IMEI
Query IMEI
Serial Parameter Command
UART
Query/Set serial Parameter
UARTFT
Query/Set serial package time
UARTFL
Query/Set serial package length
RFCEN
Query/Set whether enable the baud rate synchronization
Network Command
APN
Query/Set APN
SOCKA
Query/Set socket A
SOCKB
Query/Set socket B
SOCKAEN
Query/Set whether enable socket A
SOCKBEN
Query/Set whether enable socket B
SOCKASL
Query/Set socket A persistent connection
SOCKBSL
Query/Set socket B persistent connection
SOCKALK
Query/Set socket A connection status
SOCKBLK
Query/Set socket B connection status
SOCKATO
Query/Set socket A timeout when you don’t use persistent
connection
SOCKBTO
Query/Set socket B timeout when you don’t use persistent
connection

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SOCKIND
Query/Set whether show source from socket A/B
Identity Package Command
REGEN
Query/Set whether enable the identity package
REGTP
Query/Set identity package type
REGDT
Query/Set user-defined package
REGSND
Query/Set the identity methods
CLOUD
Query/Set USR Cloud ID
Heartbeat Package Command
HEARTEN
Query/Set whether enable the heartbeat package
HEARTDT
Query/Set heartbeat package data
HEARTSND
Query/Set sending to network or serial
HEARTTM
Query/Set heartbeat time interval
HTTPD Client Mode Command
HTPTP
Query/Set HTTP request method
HTPURL
Query/Set URL
HTPSV
Query/Set HTTP server address and port
HTPHD
Query/Set HTTP Header
HTPTO
Query/Set time out
HTPFLT
Query/Set whether filter the HTTP header of response
SMS Command
DSTNUM
Query/Set destination number
SMSEND
Send message
CISMSSEND
Send message
SMSFLT
Query/Set whether filter the source number
SMSPH
Query/Set whether show the source number
Figure 11 AT command set
8.1.2.1. AT
Function: Test command
Format:
Query:
AT{CR}
{CR}{LF}OK{CR}{LF}{CR}{LF}OK{CR}{LF}
8.1.2.2. AT+H
Function: Help command
Format:
Query:
AT+H{CR}

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{CR}{LF}help message{CR}{LF}{CR}{LF}OK{CR}{LF}
Parameters:
help message: help instructions
8.1.2.3. AT+Z
Function: Restart the USR-G761w
Format:
AT+Z{CR}
{CR}{LF}OK{CR}{LF}
8.1.2.4. AT+E
Function: Query/Set the echo status of device AT command
Format:
Query current parameters:
AT+E{CR} or AT+E?{CR}
{CR}{LF}+E:status{CR}{LF}{CR}{LF}OK{CR}{LF}
Set:
AT+E=status{CR}
{CR}{LF}OK{CR}{LF}
Parameters:
Status: echo status, including:
ON: open
OFF: close
Example: AT+E=ON
8.1.2.5. AT+ENTM
Function: Set device back to work mode
Function:
Execute specified functions:
AT+ENTM{CR}
{CR}{LF}OK{CR}{LF}
8.1.2.6. AT+WKMOD
Function: Query/Set device work mode
Format:
Query current parameters:
AT+WKMOD{CR} or AT+WKMOD?{CR}
{CR}{LF}+WKMOD: mode{CR}{LF}{CR}{LF}OK{CR}{LF}

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Set:
AT+WKMOD=mode{CR}
{CR}{LF}OK{CR}{LF}
Parameters:
Mode: work mode, including:
SMS: SMS transparent transmission mode
NET: Network transparent transmission mode
HTTPD: HTTPD client mode
Example: AT+WKMOD=NET
8.1.2.7. AT+CMDPW
Function: Query/Set command password
Format:
Query current parameters:
AT+CMDPW{CR} or AT+CMDPW?{CR}
{CR}{LF}+CMDPW: password{CR}{LF}{CR}{LF}OK{CR}{LF}
Set:
AT+CMDPW=password{CR}
{CR}{LF}OK{CR}{LF}
Parameters:
Password: command password, ASCII code which in 1~10 bytes.
Example: AT+CMDPW=www.usr.cn#
8.1.2.8. AT+STMSG
Function: Query/Set start information of the device
Format:
Query current parameters:
AT+STMSG{CR} or AT+STMSG?{CR}
{CR}{LF}+STMSG: message{CR}{LF}{CR}{LF}OK{CR}{LF}
Set:
AT+STMSG=message{CR}
{CR}{LF}OK{CR}{LF}
Parameters:
Message: start information, the information which will be output automatically after power on. ASCII
which in 1~20 bytes.
Example: AT+STMSG=www.usr.cn
8.1.2.9. AT+CSQ
Function: Query Received Signal Strength Indicator of USR-G761w

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Format:
Query current parameters
AT+CSQ{CR} or AT+CSQ?{CR}
{CR}{LF}+CSQ:RSSI,BER {CR}{LF}{CR}{LF}OK{CR}{LF}
Parameters:
RSSI: received signal strength indicator
0, equal to or less than -125 dBm
1~30, round numbers (31×（125－|rssi|）/ 50) dBm
31, equal to or greater than -75 dBm
99, unknown or unpredictable
BER:（bit error rate percentage）: Doesn’t support BER query at present, will respond 99 in execution
command and test command.
8.1.2.10. AT+RELD
Function: reload to user default setting, USR-G761w will restart
Format:
Execute specified function:
AT+RELD{CR}
{CR}{LF}OK{CR}{LF}
8.1.2.11. AT+CLEAR
Function: reload to factory defaults, USR-G761w will restart.
Format:
Execute specified function:
AT+CLEAR{CR}
{CR}{LF}OK{CR}{LF}
8.1.2.12. AT+CFGTF
Function: Save current settings to be user-default setting.
Format:
Execute specified function:
AT+CFGTF{CR}
{CR}{LF}OK{CR}{LF}
8.1.2.13. AT+VER
Function: Query firmware version
Format:
Query current parameters: