USR IOT USR-K3 Setup guide

USR-K3 AT Command Set www.usriot.com
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USR-K3 AT Command Set
(Firmware 3014)
File version: 1.0.3

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Content
USR-K3 AT Command Set........................................................................................................................................... 1
1. What is the AT command.......................................................................................................................................4
2. How to use the AT command................................................................................................................................4
2.1. How to enter AT command mode........................................................................................................... 4
3. AT command set........................................................................................................................................................ 4
4. AT command details.................................................................................................................................................6
4.1. AT+ENTM..........................................................................................................................................................6
4.2. AT+Z...................................................................................................................................................................6
4.3. AT+RELD...........................................................................................................................................................6
4.4. AT+E...................................................................................................................................................................6
4.5. AT+VER............................................................................................................................................................. 7
4.6. AT+MID.............................................................................................................................................................7
4.7. AT+MAC............................................................................................................................................................ 7
4.8. AT+USERMAC................................................................................................................................................. 7
4.9. AT+PDTIME..................................................................................................................................................... 8
4.10. AT+WANN......................................................................................................................................................8
4.11. AT+DNS.......................................................................................................................................................... 8
4.12. AT+SEARCH.................................................................................................................................................. 9
4.13. AT+RSTIM..................................................................................................................................................... 9
4.14. AT+CFGTF......................................................................................................................................................9
4.15. AT+PING1..................................................................................................................................................... 9
4.16. AT+WEBU....................................................................................................................................................10
4.17. AT+WEBPORT............................................................................................................................................10
4.18. AT+PLANG.................................................................................................................................................. 10
4.19. AT+UART1.................................................................................................................................................. 11
4.20. AT+UARTTL1..............................................................................................................................................11
4.21. AT+SOCKA1................................................................................................................................................11
4.22. AT+SOCKLKA1...........................................................................................................................................12
4.23. AT+WEBSOCKPORT1..............................................................................................................................13
4.24. AT+RFCEN1................................................................................................................................................ 13
4.25. AT+SOCKSL1..............................................................................................................................................13
4.26. AT+SHORTO1............................................................................................................................................ 13
4.27. AT+SOCKTON1..........................................................................................................................................14
4.28. AT+NETPR1................................................................................................................................................ 14
4.29. AT+UDPON1...............................................................................................................................................14
4.30. AT+UARTCLBUF........................................................................................................................................15
4.31. AT+MODTCP1............................................................................................................................................ 15
4.32. AT+MODPOLL1......................................................................................................................................... 15
4.33. AT+MODTO1.............................................................................................................................................. 15
4.34. AT+REGEN1................................................................................................................................................16
4.35. AT+REGTCP1............................................................................................................................................. 16

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4.36. AT+REGUSER1.......................................................................................................................................... 17
4.37. AT+REGUSER1.......................................................................................................................................... 17
4.38. AT+REGCLOUD1....................................................................................................................................... 17
4.39. AT+HEARTEN1.......................................................................................................................................... 18
4.40. AT+HEARTTP1...........................................................................................................................................18
4.41. AT+HEARTTM1..........................................................................................................................................18
4.42. AT+HEARTDT1.......................................................................................................................................... 19
4.43. AT+HEARTUSER1.....................................................................................................................................19
4.44. AT+HTPTP1................................................................................................................................................ 19
4.45. AT+HTPURL1............................................................................................................................................. 20
4.46. AT+HTPHEAD1.......................................................................................................................................... 20
4.47. AT+HTPCHD1.............................................................................................................................................20
5. Contact........................................................................................................................................................................21
6. Disclaimer.................................................................................................................................................................. 21
7. Update History.........................................................................................................................................................21

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1.What is the AT command.
AT command is used for controlling module. You can use AT command to configure and query the settings.
2.How to use the AT command
For USR device is in transparent mode normally, you must enter AT command mode at first. Then you can
send AT command to configure or query the settings. After you configure the USR device, you should restart
the USR device to make the settings take effect. Every time module restart will work in work mode rather AT
command mode.
Every AT command must add character carriage return <CR> and line feed <LF>. In Hex, <CR> is 0x0D
<LF> is 0x0A.
2.1.How to enter AT command mode
Please read this FAQ about entering AT command mode.
http://www.usriot.com/enter-serial-command-mode/
3.AT command set
Command
Function
Management Command
ENTM
Exit serial AT command mode and enter work mode
Z
Reset the module
RELD
Restore default settings
E
Query/Set AT command echo function enable/disable
System Command
VER
Query firmware version
MID
Query/Set module name
MAC
Query module MAC address
USERMAC
Set user editable MAC address
PDTIME
Query production data
WANN
Query/Set module WAN interface parameters
DNS
Query/Set DNS address
SEARCH
Query/Set searching port and keyword in LAN
RSTIM
Query/Set timeout reset time
CFGTF
Saving current settings as default settings

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PING1
Set PING IP address and perform a PING action
Web Server command
WEBU
Query/Set Web Server username and password
WEBPORT
Query/Set Web Server port number
PLANG
Query/Set default language of Web Server
Serial port and socket command
UART1
Query/Set serial port parameters
UARTTL1
Query/Set serial package time and length
SOCKA1
Query/Set socket A parameters
SOCKLKA1
Query/Set socket A connection status
WEBSOCKPORT1
Query/Set websocket port number
RFCEN1
Query/Set baud rate synchronization function enable/disable
SOCKSL1
Query/Set non-persistent connection function enable/disable
SHORTO1
Query/Set non-persistent connection function time
SOCKTON1
Query/Set timeout reconnecting time
NETPR1
Query/Set network printing function enable/disable
UDPON1
Query/Set not judging remote IP address and port in UDP Client mode function
enable/disable
UARTCLBUF
Query/Set clearing serial port cache before module establishing connection
enable/disable
Modbus command
MODTCP1
Query/Set Modbus RTU<->Modbus TCP function enable/disable
MODPOLL1
Query/Set Modbus polling enable/disable
MODTO1
Query/Set Modbus polling time
Identity packet command
REGEN1
Query/Set status of identity packet
REGTCP1
Query/Set sending method of identity packet
REGUSR1
Query/Set user editable identity packet data, only support ASCII
REGUSER1
Query/Set user editable identity packet data, support ASCII and HEX
REGCLOUD1
Query/Set USR Cloud ID and password
Heartbeat packet command
HEARTEN1
Query/Set heartbeat packet enable/disable
HEARTTP1
Query/Set type of heartbeat packet
HEARTTM1
Query/Set heartbeat packet interval
HEARTDT1
Query/Set user editable heartbeat packet data, only support ASCII
HEARTUSER1
Query/Set user editable heartbeat packet data, support ASCII and HEX
HTTP command
HTPTP1
Query/Set HTTP requesting method in HTTPD Client mode
HTPURL1
Query/Set URL in HTTPD Client mode

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HTPHEAD1
Query/Set HTTP header in HTTPD Client mode
HTPCHD1
Query/Set filtering HTTP header of response data enabled/disabled in HTTPD
Client mode
4.AT command details
Special Characters
Character
Note
Hex
<CR>
Carriage Return
0x0D
<LF>
Line Feed
0x0A
4.1.AT+ENTM
Format
Set
AT+ENTM<CR>
Return
<CR><LF>+OK<CR><LF>
4.2.AT+Z
Format
Set
AT+Z<CR>
Return
<CR><LF>+OK<CR><LF>
4.3.AT+RELD
Format
Set
AT+RELD<CR>
Return
<CR><LF>+OK<CR><LF>
4.4.AT+E
Parameter
Description
Default Value
Range
<Status>
Status of AT command Echo function
ON
ON/OFF

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Format
Query
AT+E<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+E=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.5.AT+VER
Parameter
Description
<VER>
Firmware version of the module
Format
Query
AT+VER<CR>
Return
<CR><LF>+OK=<VER><CR><LF>
4.6.AT+MID
Parameter
Description
Default Value
Range
<Name>
Module name
USR-K3
1~15 Bytes
Format
Query
AT+MID<CR>
Return
<CR><LF>+OK=<Name><CR><LF>
Set
AT+MID=<Name><CR>
Return
<CR><LF>+OK<CR><LF>
4.7.AT+MAC
Parameter
Description
Range
<MAC>
MAC address of the module.
USR MAC start with D8B04C
Format
Query
AT+MAC<CR>
Return
<CR><LF>+OK=<MAC><CR><LF>
4.8.AT+USERMAC
Parameter
Description
Range
<MAC>
MAC address
USR MAC start with D8B04C

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Format
Set
AT+USERMAC=<MAC><CR>
Return
<CR><LF>+OK<CR><LF>
4.9.AT+PDTIME
Parameter
Description
<Data>
Production data of module.
Format
Query
AT+PDTIME<CR>
Return
<CR><LF>+OK=<Data><CR><LF>
4.10. AT+WANN
Parameter
Description
Default Value
Range
<Mode>
Method of
getting IP
STATIC
STATIC: Get the IP address manually
DHCP: Get the IP address automatically
<IP address>
IP address
192.168.0.7
0.0.0.0~255.255.255.255
<Mask>
Subnet mask
255.255.255.0
0.0.0.0~255.255.255.255
<Gateway>
Gateway
address
192.168.0.1
0.0.0.0~255.255.255.255
Format
Query
AT+WANN<CR>
Return
<CR><LF>+OK=<Mode>,<IP address>,<Mask>,<Gateway><CR><LF>
Set
AT+WANN=<Mode>,<IP address>,<Mask>,<Gateway><CR>
Return
<CR><LF>+OK<CR><LF>
4.11. AT+DNS
Parameter
Description
Default Value
Range
<Address>
DNS server address
192.168.0.1
0.0.0.0~255.255.255.255
Format
Query
AT+DNS<CR>
Return
<CR><LF>+OK=<Address><CR><LF>
Set
AT+DNS=<Address><CR>
Return
<CR><LF>+OK<CR><LF>

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4.12. AT+SEARCH
Parameter
Description
Default Value
Range
<Port>
UDP port for searching
48899
1~65535
<Keyword>
Searching keyword
WWW.USR.CN
1~20 bytes
Format
Query
AT+SEARCH<CR>
Return
<CR><LF>+OK=<Port>,<Keyword><CR><LF>
Set
AT+SEARCH=<Port>,<Keyword><CR>
Return
<CR><LF>+OK<CR><LF>
4.13. AT+RSTIM
Parameter
Description
Default Value
Range
<Time>
Timeout reset time
3600s
0, 60-65535s
Format
Query
AT+RSTIM<CR>
Return
<CR><LF>+OK=<Time><CR><LF>
Set
AT+RSTIM=<Time><CR>
Return
<CR><LF>+OK<CR><LF>
4.14. AT+CFGTF
Parameter
Range
<Status>
Saved: Saving current setting as default settings.
Format
Set
AT+CFGTF<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
4.15. AT+PING1
Parameter
Description
Range
<Address>
IP address or
domain name
IP address: 0.0.0.0~255.255.255.255
Domain name: 1-30 bytes

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Format
Set
AT+PING1=<Address><CR>
Return
<CR><LF>+OK=SUCCESS<CR><LF>
4.16. AT+WEBU
Parameter
Description
Default Value
Range
<Username>
Web Server username
admin
1~6 bytes
<Password>
Web Server password
admin
1~6 bytes
Format
Query
AT+WEBU<CR>
Return
<CR><LF>+OK=<Username>,<Password><CR><LF>
Set
AT+WEBU=<Username>,<Password><CR>
Return
<CR><LF>+OK<CR><LF>
4.17. AT+WEBPORT
Parameter
Description
Default Value
Range
<Port>
Web Server Port
80
1~65535
Format
Query
AT+WEBPORT<CR>
Return
<CR><LF>+OK=<Port><CR><LF>
Set
AT+WEBPORT=<Port><CR>
Return
<CR><LF>+OK<CR><LF>
4.18. AT+PLANG
Parameter
Description
Default Value
Range
<Language>
Language of
Web Server
EN
EN: English
CH: Chinese
Format
Query
AT+PLANG<CR>
Return
<CR><LF>+OK=<Language><CR><LF>
Set
AT+PLANG=<Language><CR>
Return
<CR><LF>+OK<CR><LF>

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4.19. AT+UART1
Parameter
Description
Default Value
Range
<Baud rate>
Baud rate
115200
600~1024000
<Data bits>
Data bits
8
5,6,7,8
<Stop bits>
Stop bits
1
1,2
<Parity>
Parity
NONE
NONE,EVEN,ODD,MASK,SPACE
<Flow
Control>
Flow control
NFC
NFC: No flow control
FC: Hardware flow control(RTS/CTS)
Format
Query
AT+UART1<CR>
Return
<CR><LF>+OK=<Baud rate>,<Data bits>,<Stop bits>,<Parity><Flow
Control><CR><LF>
Set
AT+UART1=<Baud rate>,<Data bits>,<Stop bits>,<Parity><Flow
Control><CR>
Return
<CR><LF>+OK<CR><LF>
4.20. AT+UARTTL1
Parameter
Description
Default Value
Range
<Time>
Serial package time
0
0~255 ms
<Length>
Serial package length
0
0~1460 bytes
Format
Query
AT+UARTTL1<CR>
Return
<CR><LF>+OK=<Time>,<Length><CR><LF>
Set
AT+UARTTL1=<Time>,<Length><CR>
Return
<CR><LF>+OK<CR><LF>
4.21. AT+SOCKA1
Parameter
Description
Default Value
Range
<Protocol>
Network
protocol
TCPS
TCPS: TCP Server mode
TCPC: TCP Client mode
UDPS: UDP Server mode
UDPC: UDP Client mode
HTPC: HTTP Client mode

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<IP address>
Remote
server IP
address (in
client mode)
192.168.0.7
0.0.0.0~255.255.255.255
<Port>
Port number
23
1~65535
Local port in Server mode
Remote port in Client mode
Format
Query
AT+SOCKA1<CR>
Return
<CR><LF>+OK=<Protocol>,<IP address>,<Port><CR><LF>
Set
AT+SOCKA1=<Protocol>,<IP address>,<Port><CR>
Return
<CR><LF>+OK<CR><LF>
4.22. AT+SOCKLKA1
Parameter
Description
Default Value
Range
<Status>
Status of
socket
LISTEN
IDLE: Module is booting or disable
Keep-alive
LISTEN: Waiting client (Module is in TCP
Server mode)
CONNECTING: Module is connecting to TCP
Server (Module is in TCP Client mode)
CONNECTED: TCP connection is established
CONNECTED(n): n is the number of TCP
clients which connect to module (Module is
in TCP server mode)
ERROR: Connection Error
Format
Query
AT+SOCKLKA1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+SOCKLKA1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>

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4.23. AT+WEBSOCKPORT1
Parameter
Description
Default Value
Range
<Port>
Port of websocket
6432
1~65535
Format
Query
AT+WEBSOCKPORT1<CR>
Return
<CR><LF>+OK=<Port><CR><LF>
Set
AT+WEBSOCKPORT1=<Port><CR>
Return
<CR><LF>+OK<CR><LF>
4.24. AT+RFCEN1
Parameter
Description
Default Value
Range
<Status>
Status of baud rate synchronization function
ON
ON/OFF
Format
Query
AT+RFCEN1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+RFCEN1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.25. AT+SOCKSL1
Parameter
Description
Default Value
Range
<Status>
Status of non-persistent connection function
OFF
ON/OFF
Format
Query
AT+SOCKSL1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+SOCKSL1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.26. AT+SHORTO1
Parameter
Description
Default Value
Range
<Time>
Non-persistent connection function time
3s
2-255s

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Format
Query
AT+SHORTO1<CR>
Return
<CR><LF>+OK=<Time><CR><LF>
Set
AT+SHORTO1=<Time><CR>
Return
<CR><LF>+OK<CR><LF>
4.27. AT+SOCKTON1
Parameter
Description
Default Value
Range
<Time>
Timeout reconnecting time
86400s
1-99999s
Format
Query
AT+SOCKTON1<CR>
Return
<CR><LF>+OK=<Time><CR><LF>
Set
AT+SOCKTON1=<Time><CR>
Return
<CR><LF>+OK<CR><LF>
4.28. AT+NETPR1
Parameter
Description
Default Value
Range
<Status>
Status of network printing function
OFF
ON/OFF
Format
Query
AT+NETPR1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+NETPR1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.29. AT+UDPON1
Parameter
Description
Default Value
Range
<Status>
Status of not judging remote IP address
and port in UDP Client mode function
OFF
ON/OFF
Format
Query
AT+UDPON1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+UDPON1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>

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4.30. AT+UARTCLBUF
Parameter
Description
Default Value
Range
<Status>
Status of clearing serial port cache before
module establishing connection function
OFF
ON/OFF
Format
Query
AT+UARTCLBUF<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+UARTCLBUF=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.31. AT+MODTCP1
Parameter
Description
Default Value
Range
<Status>
Status of Modbus RTU<->Modbus TCP
function
OFF
ON/OFF
Format
Query
AT+MODTCP1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+MODTCP1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.32. AT+MODPOLL1
Parameter
Description
Default Value
Range
<Status>
Status of Modbus polling function
OFF
ON/OFF
Format
Query
AT+MODPOLL1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+MODPOLL1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.33. AT+MODTO1
Parameter
Description
Default Value
Range
<Time>
Modbus polling time
200s
200-9999s

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Format
Query
AT+MODTO1<CR>
Return
<CR><LF>+OK=<Time><CR><LF>
Set
AT+MODTO1=<Time><CR>
Return
<CR><LF>+OK<CR><LF>
4.34. AT+REGEN1
Parameter
Description
Default Value
Range
<Status>
Status of
identity
packet
OFF
OFF: Disabling the identity packet
MAC: Using MAC address as identity
packet
CLOUD: Using USR Cloud ID as Identity
packet
USR：Using user editable identity packet
Format
Query
AT+REGEN1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+REGEN1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.35. AT+REGTCP1
Parameter
Description
Default Value
Range
<Method>
Sending
method of
identity
packet
First
First: Sending identity packet
before first package after
establishing connection
Every: Sending identity packet in
every package.
ALL: Sending identity packet with
both methods.
Format
Query
AT+REGTCP1<CR>
Return
<CR><LF>+OK=<Method><CR><LF>
Set
AT+REGTCP1=<Method><CR>
Return
<CR><LF>+OK<CR><LF>

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4.36. AT+REGUSR1
Parameter
Description
Default Value
Range
<Data>
User editable identity
packet data
www.usr.cn
Length: 1~40 bytes
Format
Query
AT+REGUSR1<CR>
Return
<CR><LF>+OK=<Data><CR><LF>
Set
AT+REGUSR1=<Data><CR>
Return
<CR><LF>+OK<CR><LF>
4.37. AT+REGUSER1
Parameter
Description
Default Value
Range
<Data>
User editable identity
packet data
www.usr.cn
ASCII: Less than 40 bytes
HEX: Less than 80 bytes
<Type>
Type of user editable
identity packet
ASCII
ASCII/HEX
Format
Query
AT+REGUSER1<CR>
Return
<C+R><LF>+OK=<Data>,<Type><CR><LF>
Set
AT+REGUSER1=<Data>,<Type><CR>
Return
<CR><LF>+OK<CR><LF>
4.38. AT+REGCLOUD1
Parameter
Description
Range
<ID>
USR Cloud ID
Length: 20 bytes
<Password>
USR Cloud password
Length: 8 bytes
Format
Query
AT+REGCLOUD1<CR>
Return
<C+R><LF>+OK=<ID>,<Password><CR><LF>
Set
AT+REGCLOUD1=<ID>,<Password><CR>
Return
<CR><LF>+OK<CR><LF>

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4.39. AT+HEARTEN1
Parameter
Description
Default Value
Range
<Status>
Status of heartbeat packet
OFF
ON/OFF
Format
Query
AT+HEARTEN1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+HEARTEN1=<Status><CR>
Return
<CR><LF>+OK<CR><LF>
4.40. AT+HEARTTP1
Parameter
Description
Default Value
Range
<Type>
Type of
heartbeat
packet
NONE
NONE: Disabling the heartbeat packet
NET: Sending heartbeat packet to
network
COM: Sending heartbeat packet to
serial port
Format
Query
AT+HEARTTP1<CR>
Return
<CR><LF>+OK=<Type><CR><LF>
Set
AT+HEARTTP1=<Type><CR>
Return
<CR><LF>+OK<CR><LF>
4.41. AT+HEARTTM1
Parameter
Description
Default Value
Range
<Time>
Heartbeat packet interval
30 seconds
1~65535 seconds
Format
Query
AT+HEARTTM1<CR>
Return
<CR><LF>+OK=<Time><CR><LF>
Set
AT+HEARTTM1=<Time><CR>
Return
<CR><LF>+OK<CR><LF>

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4.42. AT+HEARTDT1
Parameter
Description
Default Value
Range
<Data>
Heartbeat packet data
www.usr.cn
Length: 1~40 bytes
Format
Query
AT+HEARTDT1<CR>
Return
<CR><LF>+OK=<Data><CR><LF>
Set
AT+HEARTDT1=<Data><CR>
Return
<CR><LF>+OK<CR><LF>
4.43. AT+HEARTUSER1
Parameter
Description
Default Value
Range
<Data>
User editable
heartbeat packet data
www.usr.cn
ASCII: Less than 40 bytes
HEX: Less than 80 bytes
<Type>
Type of user editable
heartbeat packet
ASCII
ASCII/HEX
Format
Query
AT+HEARTUSER1<CR>
Return
<C+R><LF>+OK=<Data>,<Type><CR><LF>
Set
AT+HEARTUSER1=<Data>,<Type><CR>
Return
<CR><LF>+OK<CR><LF>
4.44. AT+HTPTP1
Parameter
Description
Default Value
Range
<Method>
HTTP requesting method in
HTTPD Client mode
GET
GET/POST
Format
Query
AT+HTPTP1<CR>
Return
<CR><LF>+OK=<Method><CR><LF>
Set
AT+HTPTP1=<Method><CR>
Return
<CR><LF>+OK<CR><LF>

USR-K3 AT Command Set www.usriot.com
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4.45. AT+HTPURL1
Parameter
Description
Default Value
Range
<URL>
HTTP URL in HTTPD Client
mode
/1.php?
Length: 1~100 bytes
Format
Query
AT+HTPURL1<CR>
Return
<CR><LF>+OK=<URL><CR><LF>
Set
AT+HTPURL1=<URL><CR>
Return
<CR><LF>+OK<CR><LF>
4.46. AT+HTPHEAD1
Parameter
Description
Default Value
Range
<Header>
HTTP header in
HTTPD Client mode
User_Agent:
Mozilla/4.0
Length: 0~180 bytes,
<<CRLF>> is Carriage return
and line feed.
Format
Query
AT+HTPHEAD1<CR>
Return
<CR><LF>+OK=<Header><CR><LF>
Set
AT+HTPHEAD1=<Header><CR>
Return
<CR><LF>+OK<CR><LF>
4.47. AT+HTPCHD1
Parameter
Description
Default Value
Range
<Status>
Status of filtering HTTP header of
response data in HTTPD Client mode
OFF
ON/OFF
Format
Query
AT+HTPCHD1<CR>
Return
<CR><LF>+OK=<Status><CR><LF>
Set
AT+HTPCHD1=<Status><CR>
Return:
<CR><LF>+OK<CR><LF>