LINOVISION Industrial Serial Device Server User Manual
- May 15, 2024
- LINOVISION
Table of Contents
IOT-C101
UserManual
Updated on October 13,2023
Features
- 10/100Mbps Ethernet interface and support Auto-MDI/MDIX.
- Support TCP Server, TCP Client, UDP Client, UDP Server, HTTP Client.
- Support configuring through Web Server
- Support RS232 and RS485 and they 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 reset to default settings by hardware way.
- Support Keep-alive.
- Support timeout restart function and timeout reconnect function.
Get Start
Serial to Ethernet Converter, Supports Modbus RTU to TCP
Model:IOT-C101
IOT-C101 is one Industrial Serial to Ethernet Converter, which supports
Modbus RTU to TCP, customized webpage.
Top-rated item in the market.
RS232/RS485,can be used
simultaneously
DC 5-36v DC
Flow Control:CTS/RTS XON/XOFF
1.1. Application Diagram
1.2.
Hardware Design
1.2.1. 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
Product Functions
This chapter introduces the functions of as the following diagram shown, you
can get an overall knowledge of it. 
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.
2.1.2. Reset to default settings
Hardware: Power off the 410s and press Reload button, then power on the
410s and keep pressing Reload button over 5 seconds can reset to default
settings.
Software: User can also reset to default settings through setup software for
410s.
AT command: User can send AT+RELD to reset to 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
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.
2.2.2. 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
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
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
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
WebSocket function can achieve
real-time interaction between RS232 interface 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 
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 restarting DTU, the parameters will back to original parameters.
2.4. Features
2.4.1. Identity packet function
Identity packet is used for
identifying the device when 410s 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: 410s 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 RTU<=>Modbus TCP function. Data transmission diagram
as follow:
Modbus polling: 410s
support Modbus polling function. 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.
Parameter Setting
There are three ways to configure . They are setup software, Web Server and AT
command.
3.1. 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:
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
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: 
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.
3.3.2. Network AT command
Network AT command is to send a search keyword by broadcast, then set the
parameters in a single broad cast way(If user want to use network AT command,
module and PC which send the network AT command must in same network segment).
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