USR IOT USR-W600 User manual

USR-W600 User Manual Technical Support: h.usriot.com
Jinan USR IOT Technology Limited 1
USR-W600 User Manual
File Version: V1.0.6.01

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Contents
USR-W600 User Manual........................................................................................................................................ 1
Features....................................................................................................................................................................... 3
1.Get Start....................................................................................................................................................................4
1.1.Application Diagram.................................................................................................................................. 4
2.Product Functions.................................................................................................................................................. 5
2.1.WIFI mode.................................................................................................................................................... 5
2.1.1.STA mode........................................................................................................................................... 5
2.1.2.AP mode.............................................................................................................................................5
2.1.3.AP+STA mode....................................................................................................................................6
2.1.4.Encryption mode............................................................................................................................. 6
2.2.Work mode................................................................................................................................................... 6
2.2.1.Transparent transmission mode................................................................................................. 6
2.2.2.AT command mode..........................................................................................................................7
2.2.3.HTTP Client mode........................................................................................................................... 7
2.3.Serial port.....................................................................................................................................................7
2.3.1.Serial port basic parameters.........................................................................................................7
2.3.2.Serial package method................................................................................................................... 8
2.3.3.Baud rate synchronization function............................................................................................8
2.4.Features.........................................................................................................................................................8
2.4.1.Search in LAN....................................................................................................................................8
2.4.2.TCP/UDP Client identity packet function................................................................................... 9
2.4.3.Usrlink............................................................................................................................................... 9
2.4.4.Simple Config..................................................................................................................................10
2.4.5.Heartbeat packet function...........................................................................................................10
2.4.6.WIFI connection exceptions handling.......................................................................................10
3.Parameter configuration.................................................................................................................................... 12
3.1.Web Server................................................................................................................................................. 12
3.2.AT command.............................................................................................................................................. 12
3.2.1.Serial AT command mode............................................................................................................ 12
3.2.2.Setup software............................................................................................................................... 12
4.Contact Us.............................................................................................................................................................. 13
5.Disclaimer..............................................................................................................................................................13
6.Update History...................................................................................................................................................... 13

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Features
Support WIFI@2.4GHz 802.11b/g/n wireless standards.
Support WEP/WEA/WPA2.
Support AP, STA, AP+STA.
Support RS232 and RS485 serial ports.
Support electrostatic protection.
Support TCP/UDP Client identity packet function.
Support Simple Config/Airkiss/usrlink.
Support HTTP Client mode.

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1.Get Start
Product link:
http://www.usriot.com/p/rs232rs485-wifi-converter-wireless-serial-server/
Figure 1 Download Page
If you have any question, please submit it back to customer center: http://h.usriot.com
1.1.Application Diagram
Figure 2 Application diagram

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2.Product Functions
This chapter introduces the functions of USR-W600 as the following diagram shown, you can get an overall
knowledge of it.
Figure 3 Product Functions diagram
2.1.WIFI mode
USR-W600 supports three WIFI mode: STA, AP, AP+STA.
AP: Access point, central node of a wireless network. In general, wireless router is an AP and other wireless
terminal can connect to each others through AP.
STA: Station, terminal of a wireless network. Such as PDA, mobile phone.
2.1.1.STA mode
W600 works in STA mode can connect to an AP to realize communication with other devices which connect to
same AP. And if this AP has connected to internet, USR-W600 can also access internet.
Figure 4 STA mode
2.1.2.AP mode
User can connect own devices such as PC/PAD/phone to W600 works in AP mode directly to realize data
transmission. After establishing connection successfully, user can enter W600 Web Server to configure the

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W600.
Figure 5 AP mode
2.1.3.AP+STA mode
W600 supports AP+STA mode which can enable an AP interface and a STA interface simultaneously. W600
supports at most three STA device connecting to W600 AP interface in this mode.
Figure 6 AP+STA mode
2.1.4.Encryption mode
Encryption can make sure secure data transmission and improve communication security. W600 supports
various encryption mode including:
WPA-PSK/TKIP
WPA-PSK/AES
WPA2-PSK/TKIP
WPA2-PSK/AES
WEP
2.2.Work mode
W600 supports three work modes: transparent transmission mode, AT command mode and HTTP Client mode.
2.2.1.Transparent transmission mode
In this work mode, W600 can make a bidirectional connection between serial side and network side. This
connection is transparent transmission. Data from serial device can be received in network, and network data

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can also be sent to serial device. This mode mainly used to realize data transmission between user serial device
and fixed server through socket.
Figure 7 Transparent transmission mode
Note:
Socket A supports: TCP Server, TCP Client, UDP Server, UDP Client.
Socket B supports: TCP Client, UDP Server, UDP Client.
2.2.2.AT command mode
User can enter AT command mode and send AT commands by serial to query/set W600 parameters(Enter AT
command mode will disable transparent transmission mode and make serial port to send/receive AT
commands). In this mode, all settings will be saved automatically and module will enter transparent
transmission mode after sending AT+ENTM to exit AT command mode.
2.2.3.HTTP Client mode
In this work mode, user should configure the HTTP URL, HTTP header data, HTTP server address and HTTP
server port firstly. Serial data can be packaged into HTTP format and sent to HTTP server through W600, HTTP
server will also return data to W600.
Figure 8 HTTP Client mode
2.3.Serial port
2.3.1.Serial port basic parameters
Parameters
Range
Baud Rate
1200, 2400, 4800, 9600, 14400, 19200, 38400, 57600, 115200,
128000, 230400, 460800
Data Bits
7, 8
Stop Bits
1, 2
Parity Bits
None, Odd, Even, Mark, Space
Flow Control
NFC: No flow control
FC: Hardware flow control
485: Enable RS485
Figure 9 Serial port basic parameters

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2.3.2.Serial package method
Figure 10 Serial package method
Suppose n ms is serial package triggering time, if T1>n, T2<n, T3<n, T4<n, T5<n, T6>n, Byte1-Byte5 will be a
package.
Transparent transmission mode: In transparent transmission mode, W600 will continually check the
interval between two adjacent bytes. If this interval > serial package triggering time(Default is 20ms and
user can use AT+UARTTE to configure triggering time), it will be considered as end of a package and W600
will send received data as a TCP package data to network. Otherwise W600 will receive data to 1024 bytes
and send these 1024 bytes as a TCP package data to network.
AT command mode: In AT command mode, W600 will continually check the interval between two adjacent
bytes. If this interval > serial package triggering time(Default is 20ms and user can use AT+UARTTE to
configure triggering time), it will be considered as end of a package and W600 will parse this package in AT
command format. Otherwise W600 will receive data to 256 bytes and return command error.
2.3.3.Baud rate synchronization function
When module works with USR devices or software, serial parameters will change dynamically according to
network protocol. User can modify serial parameters by sending data conformed to specific protocol via network.
It is temporary, after resetting module, the parameters will back to original parameters.
2.4.Features
2.4.1.Search in LAN
Figure 11 Search in LAN

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W600 supports ‘Search in LAN’ function: After W600 connecting to an AP, user can send UDP broadcast to a fixed
port to acquire W600’s IP address in this AP’s LAN. This function can realize searching module and
communication. Default port is 48899 and default keyword is www.usr.cn.
The whole process as follows:
Step 1: User can send a keyword(default keyword: www.usr.cn, at most 20 bytes) by UDP broadcast
way(broadcast address: xxx.xxx.xxx.255, default port: 48899) on a device which in same LAN as W600.
Step 2: After W600 receiving keyword, if keyword is correct, W600 will enter configuration mode and return IP,
MAC, MID, Version to the device. And W600 will exit configuration mode if no configuration command over 30
seconds after W600 entering configuration mode.
Step 3: After user entering configuration mode, user can send network AT commands to query/set
parameters.(The network AT commands format are same as serial AT commands)
2.4.2.TCP/UDP Client identity packet function
Figure 12 Identity Packet application diagram
When W600 works in TCP/UDP Client mode, user can enable identity packet function. Identity packet is used for
identifying the device when module works as TCP client/UDP client. There are two methods to send identity
packet.
Identity packet will be sent after connection is established.
Identity packet will be added on the front of every data package.
Identity packet can be 6 bytes MAC address identity packet, 4 bytes ID identity packet, user editable identity
packet(less than 32 bytes) or USR Cloud identity packet(only work in TCP Client mode).
2.4.3.Usrlink
When W600 works in AP mode will open a UDP port to receive usrlink commands(Port number 48899, same as
‘Search in LAN’ function and can be changed).

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Figure 13 Usrlink
The whole process as follows:
Step 1: User should directly connect phone which has download UsrAutoLink APP to W600 in AP mode through
WIFI.
Step 2: Query the surrounding SSID.
Step 3: Choose the SSID, enter password and phone will send the configuration parameters to W600.
Step 4: After receiving configuration parameters protocol, W600 will pares it and acquire the AP’s SSID and
password, save them to flash, then reset and connect to AP.
2.4.4.Simple Config
Simple Config can realize W600 connect to AP without establishing connect to W600.
When W600 works in STA or AP mode, user can pull down Reload pin 0.5~3 seconds to make W600 enter
Simple Config mode(Link pin outputs 2Hz high-low level at this moment), then user can connect W600 to AP by
follow steps:
1. Download Simple Config-C21x app and connect phone to AP which user want to connect W600 to.
2. Run the app, enter password and click ‘connect’, then phone will broadcast AP’s SSID/password through AP.
3. W600 will continually check the received data package, after parsing SSID/password successfully, W600 will
connect to AP. After connecting to AP successfully, W600 will broadcast MAC address by UDP broadcast and APP
will consider configuring successfully after receiving MAC address.
2.4.5.Heartbeat packet function
Heartbeat packet: In transparent transmission mode, module can output heartbeat packet to serial side or
network side periodic. User can configure the heartbeat packet data and sending interval.
Serial heartbeat packet can be used for polling Modbus data or other querying commands.
Network heartbeat packet can be used for showing connection status and keeping the connection (only take
effect in TCP/UDP Client mode). When connection exceptions happen, W600 can’t send heartbeat packet to
network server successfully and will reconnect to server after sending unsuccessfully over three times.
2.4.6.WIFI connection exceptions handling
WIFI connection exceptions include:
1. In STA mode, PING gateway unsuccessfully three times in succession.
2. In AP mode, no STA connecting.
3. In AP+STA mode, PING gateway unsuccessfully in succession and no STA connecting.

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After enabling this function and above WIFI connection exceptions happen, W600 will perform actions according
to user’s settings. The actions as follows, user can change by sending AT+MDCH in AT command mode and
default is 10.
Mode
Parameters
STA
AP
AP+STA
Checking interval
OFF
-
-
-
-
ON
Switch to
AP+STA mode
-
1.No action if user has configured
W600 to AP+STA mode manually.
2.If W600 switched from STA mode
to AP+STA mode automatically,
W600 will connect to AP and back
to STA mode after connecting
successfully.
1 min
2~240
Initialize WIFI
Initialize WIFI
Initialize WIFI
2~240 min
Figure 14 WIFI connection exceptions handling

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3.Parameter configuration
There are two ways to configure USR-W600. They are Web Server and AT command.
3.1.Web Server
User can connect PC to W600 through AP interface and enter Web Server to configure.
Web Server default parameters as follows:
Parameter
Default settings
SSID
USR-W600
Web Server IP address
10.10.100.254
Username
admin
Password
admin
Figure 15 Web server default parameters
After firstly connecting PC to W600, user can open browser and enter default IP 10.10.100.254 into address bar,
then log in username and password, user will enter Web Server.
3.2.AT command
We have specific user manual for AT commands.
3.2.1.Serial AT command mode
In work mode, user can enter AT command mode and send AT commands to module to configure the module.
For entering AT command mode, please refer to this FAQ:
http://www.usriot.com/enter-serial-command-mode/.
3.2.2.Setup software
We also provide setup software for W600 which based on AT commands.

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4.Contact Us
Company: Jinan USR IOT Technology Limited
Address: Floor 11, Building 1, No. 1166 Xinluo Street, Gaoxin District, Jinan, Shandong, 250101, China
Web: www.usriot.com
Support: h.usriot.com
Email: [e-mail]
Tel: [phone]
5.Disclaimer
This document provide the information of USR-W600 products, it hasn’t been granted any intellectual property
license by forbidding speak or other ways either explicitly or implicitly. Except the duty declared in sales terms
and conditions, we don’t take any other responsibilities. We don’t warrant the products sales and use explicitly
or implicitly, including particular purpose merchant-ability and marketability, the tort liability of any other
patent right, copyright, intellectual property right. We may modify specification and description at any time
without prior notice.
6.Update History
2017-11-13 V1.0.6.01 established based on Chinese version V1.0.6.