USR IOT USR-TCP232-410s User manual

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USR-TCP232-410s User Manual
File Version: V1.1.1.01

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Contents
USR-TCP232-410s User Manual...........................................................................................................................1
Features....................................................................................................................................................................... 3
1.Get Start....................................................................................................................................................................4
1.1.Application Diagram.................................................................................................................................. 4
1.2.Hardware Design.........................................................................................................................................5
1.2.1.Hardware Dimensions....................................................................................................................5
1.2.2.LED......................................................................................................................................................5
2.Product Functions.................................................................................................................................................. 6
2.1.Basic Functions............................................................................................................................................6
2.1.1.Static IP/DHCP................................................................................................................................. 6
2.1.2.Restore default settings................................................................................................................. 7
2.2.Socket functions.......................................................................................................................................... 7
2.2.1.TCP Client.......................................................................................................................................... 7
2.2.2.TCP Server.........................................................................................................................................8
2.2.3.UDP Client......................................................................................................................................... 8
2.2.4.UDP Server........................................................................................................................................ 9
2.2.5.HTTP Client.......................................................................................................................................9
2.2.6.WebSocket.......................................................................................................................................10
2.3.Serial port................................................................................................................................................... 11
2.3.1.Serial port basic parameters.......................................................................................................11
2.3.2.VCOM Application.......................................................................................................................... 11
2.3.3.Flow Control....................................................................................................................................11
2.3.4.Serial package methods............................................................................................................... 11
2.3.5.Baud rate synchronization.......................................................................................................... 11
2.4.Features...................................................................................................................................................... 12
2.4.1.Identity packet function...............................................................................................................12
2.4.2.Heartbeat packet function...........................................................................................................12
2.4.3.Non-persistent connection.......................................................................................................... 12
2.4.4.Modbus gateway............................................................................................................................ 12
2.4.5.Network printing........................................................................................................................... 13
2.4.6.Editable Web Server......................................................................................................................13
3.Parameter Setting................................................................................................................................................ 14
3.1.Setup software...........................................................................................................................................14
3.2.Web Server................................................................................................................................................. 14
3.3.AT command.............................................................................................................................................. 15
3.3.1.Serial AT command....................................................................................................................... 15
3.3.2.Network AT command.................................................................................................................. 15
4.Contact Us.............................................................................................................................................................. 17
5.Disclaimer..............................................................................................................................................................17
6.Update History...................................................................................................................................................... 17

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Features
10/100Mbps Ethernet port, support Auto-MDI/MDIX.
Support TCP Server, TCP Client, UDP Client, UDP Server, HTTP Client.
Support configuring module through Web Server
Support RS232 and RS485 serial ports, two serial ports can work independently.
Support RTS/CTS hardware flow control and Xon/Xoff software flow control.
Support USR-VCOM.
Support Modbus Gateway.
Support serial port baud rate 600bps~230.4K bps; support None, Odd, Even, Mark, Space parity way.
Support Static IP or DHCP.
Support Websocket function.
Support Reload button to restore default settings by hardware way.
Support Keep-alive.
Support timeout reset function and timeout reconnect function.

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1.Get Start
Figure 1 Download Page
1.1.Application Diagram
Figure 2 Application diagram

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1.2.Hardware Design
1.2.1.Hardware Dimensions
Figure 3 Hardware dimensions
1.2.2.LED
LED Status
POWER Light: Power on
Off: Power off
WORK Blink: Working normally
Off or light: Not working normally
232TX Blink: Sending data to serial(RS232)
Off: No data sending to serial(RS232)
232RX Blink: Receiving data from serial(RS232)
Off: No data receiving from serial(RS232)
485TX Blink: Sending data to serial(RS485)
Off: No data sending to serial(RS485)
485RX Blink: Receiving data from serial(RS485)
Off: No data receiving from serial(RS485)
Figure 4 LED

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2.Product Functions
This chapter introduces the functions of USR-TCP232-410s as the following diagram shown, you can get an
overall knowledge of it.
Figure 5 Product Functions diagram
2.1.Basic Functions
2.1.1.Static IP/DHCP
There are two ways for module to get IP address: Static IP and DHCP.
Static IP: Default setting of module is Static IP and default IP is 192.168.0.7. When user configures module in
Static IP mode, user need set IP, subnet mask and gateway and must pay attention to the relation among IP,
subnet mask and gateway.
DHCP: Module in DHCP mode can dynamically get IP, Gateway, and DNS server address from Gateway Host.
When user connects 410s directly to PC, module can’t be set in DHCP mode. Because common computer does not
have the ability to assign IP addresses.

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2.1.2.Restore default settings
Hardware restore: Power off the module and press Reload button, then power on the module and keep pressing
Reload button over 5 seconds can restore default settings.
Software restore: User can also restore default settings through setup software for 410s.
AT command restore: User can send AT+RELD to restore default settings.
2.2.Socket functions
410s supports dual sockets mode. Socket A supports TCP Server, TCP Client, UDP Server, UDP Client and HTTP
Client. Socket B supports TCP Client and UDP Client.
2.2.1.TCP Client
Figure 6 TCP Client
TCP Client provides Client connections for TCP network services. TCP Client device will connect to server to
realize data transmission between the serial port device and server. According to the TCP protocol, TCP Client
has connection/disconnection status differences to ensure reliable data transmission.
TCP Client mode supports Keep-Alive function: After establishing connection, 410s will send Keep-Alive package
in every 15 second to check TCP connection and 410s will disconnect and reconnect to server if any connection
exception occurs. TCP Client mode also supports baud rate synchronization, USR Cloud and Modbus gateway.
410s works in TCP Client mode needs connect to TCP Server and needs set the parameter: Remote IP/Port. 410s
works in TCP Client won’t accept other connection request except target server and will access server with
random local port if configuring local port to 0.

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2.2.2.TCP Server
Figure 7 TCP Server
410s works in TCP Server mode will listen network connections and build network connections, commonly be
used for communication with TCP clients on a LAN. According to the TCP protocol, TCP Server has
connection/disconnection status differences to ensure reliable data transmission.
410s works in TCP Server mode will listen local port which user set and build connection after receiving
connection request. Serial data will be sent to all TCP Client devices connected to 410s in TCP Server mode
simultaneously.
410s works in TCP Server mode supports 8 client connections at most. 410s also supports Keep-Alive function,
baud rate synchronization and Modbus gateway.
2.2.3.UDP Client
Figure 8 UDP Client

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UDP transport protocol provides simple and unreliable communication services. No connection connected
/disconnected. User only needs to configure Remote IP/Port then can realize data transmission.
In UDP Client mode, 410s will only communicate with Remote IP/Port. If data don’t from Remote IP/Port, it
won’t be received by 410s.
In UDP Client mode, if user configure Remote IP to 255.255.255.255, 410s can achieve UDP broadcast to all
network segment and receive broadcast data. User can also configure Remote IP to xxx.xxx.xxx.255 to realize
UDP broadcast in same network segment.
2.2.4.UDP Server
Figure 9 UDP Server
In UDP Server mode, 410s will change Remote IP every time after receiving UDP data from a new IP/Port and
will send data to latest communication IP/Port.
2.2.5.HTTP Client
Figure 10 HTTP Client

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Figure 11 HTTP Client
In HTTP Client mode, 410s can achieve data transmission between serial port device and HTTP server. User just
needs to configure 410s in HTTP Client and configure the HTTP header, URL and some other related parameters,
then can achieve data transmission between serial port device and HTTP server and don’t need care about the
HTTP format of data.
2.2.6.WebSocket
Figure 12 WebSocket
WebSocket function can achieve real-time interaction between serial port and Web Server and display user data
on Web Server.

2.3.Serial port
2.3.1.Serial port basic parameters
Parameters Range
Baud Rate 600~230.4Kbps
Data Bits 5, 6, 7, 8
Stop Bits 1, 2
Parity Bits None, Odd, Even, Mark, Space
Figure 13 Serial port basic parameters
2.3.2.VCOM Application
Figure 14 VCOM application
User can download VCOM software from http://www.usriot.com/usr-vcom-virtual-serial-software/.
Through this software user can set up connection between 410s and virtual serial to solve the problem that
traditional equipment PC software used in serial port communication way.
2.3.3.Flow Control
410s supports hardware flow control way ( RTS/CTS, only take effect in RS232 mode ) and software flow control
way Xon/Xoff.
2.3.4.Serial package methods
For network speed is faster than serial. Module will put serial data in buffer before sending it to network. The
data will be sent to network side as data package. There are 2 ways to end the package and send package to
network side - Time Trigger Mode and Length Trigger Mode.
410s serial package time: Default is 4 bytes sending time, range from 0 to 255.
410s serial package length: Default is 1460 bytes, range from 0 to 1460.
2.3.5.Baud rate synchronization
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 DTU, the parameters will back to original parameters.
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2.4.Features
2.4.1.Identity packet function
Figure 15 Identity Packet application diagram
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 MAC address or user editable identity packet. User editable identity packet should less
than 40 bytes.
2.4.2.Heartbeat packet function
Heartbeat packet: Module will 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. Network heartbeat packet can be used for showing connection status and keeping the connection (only
take effect in TCP/UDP Client mode).
2.4.3.Non-persistent connection
410s support non-persistent connection function in TCP Client mode. When 410s adopts this function, 410s will
connect to server and send data after receiving data from serial port side and will disconnect to server after
sending all the data to server and no data from serial port side over 3s.
2.4.4.Modbus gateway
Modbus gateway includes: Modbus RTU transparent transmission, Modbus ASCII transparent transmission,
Modbus RTU<=>Modbus TCP protocol conversion, Modbus polling and serial port query.
Modbus RTU<=>Modbus TCP: Set 410s in TCP Server or TCP Client mode, then user can set 410s with Modbus
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RTU<=>Modbus TCP function. Data transmission diagram as follow:
Figure 16 Modbus RTU<=>Modbus TCP
Modbus polling: 410s support Modbus polling function.
Figure 17 Modbus polling
2.4.5.Network printing
The network printing function is similar to the printer server. Through the existing printing driver, it can be
modified slightly and realize the network printing function by the original serial printer.
2.4.6.Editable Web Server
410s supports modifying the Web Server based on template according to needs, then using related tool to
upgrade. If user has this demand can contact to our salespersons for Web Server source and tool.

3.Parameter Setting
There are three ways to configure USR-TCP232-410s. They are setup software, Web Server and AT command.
3.1.Setup software
User can download setup software from http://www.usriot.com/usr-tcp232-m4k3-setup-software/. When
user want to configure the 410s by setup software, user can run setup software, search 410s in same LAN and
configure the 410s as follow:
Figure 18 Setup software
After researching 410s and clicking 410s to configure, user need log in with user name and password. Default
user name and password both are admin. If user keep the default parameters, it is not necessary to log in.
3.2.Web Server
User can connect PC to 410s through LAN port and enter Web Server to configure.
Web Server default parameters as follow:
Parameter Default settings
Web server IP address 192.168.0.7
User name admin
Password admin
Figure 19 Web server default parameters
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After firstly connecting PC to 410s, user can open browser and enter default IP 192.168.0.7 into address bar,
then log in user name and password, user will enter Web Server. Web Server screenshot as follow:
Figure 20 Web Server
3.3.AT command
We have specific user manual for AT commands.
3.3.1.Serial AT command
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/.
3.3.2.Network AT command
Network AT command is to send a search keyword by broadcast, then set the parameters in a single broadcast
way(If user want to use network AT command, module and PC which send the network AT command must in
same network segment). Default keyword is WWW.USR.CN and default port number is 48899. If user enter
network AT command mode but don’t send any command over 30 seconds, module will exit network AT
command mode. User can enter network AT command mode as follow way:
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Figure 21 Network AT Command
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