Usr RS232 User manual
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
Serial Device Server - RS232/RS485 to Ethernet converter
USR-TCP232-300
Hard version: V2.0
File version: V1.1
Serial Device Server - RS232/RS485 to Ethernet converter is an Equipment for convert TCP or UDP socket data
to RS232 or RS485, easy to use, low price, low power, 32 bits arm on board, high speed, high Stability.
Key words: TCP/IP, TCP, UDP, RS232, Ethernet, RS485, Serial Ethernet Server
Our concept: simple functions, stable performance, reasonable price.
We can supply Custom services, hardware, software and Server, welcome to contact us.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
Content
1. Product introduce................................................................................................................................................... 3
1.1 Introduction.................................................................................................................................................. 3
1.2 Function Features......................................................................................................................................... 3
1.3 Product Features........................................................................................................................................... 3
1.4 Applications Area......................................................................................................................................... 4
1.5 Order information......................................................................................................................................... 4
1.6 Electrical parameters.................................................................................................................................... 4
1.7 Packet list..................................................................................................................................................... 4
2. Work mode............................................................................................................................................................. 5
2.1 System Block Diagram ................................................................................................................................5
2.2 TCP Client mode.......................................................................................................................................... 5
2.3 UDP client mode.......................................................................................................................................... 6
2.4 UDP server Mode......................................................................................................................................... 6
2.5 TCP server Mode.......................................................................................................................................... 7
3. Hardware Description ............................................................................................................................................ 8
3.1 LED status.................................................................................................................................................... 8
3.2 Interface Description.................................................................................................................................... 8
3.3 Mechanical Dimensions............................................................................................................................... 9
4. Configure ............................................................................................................................................................. 10
4.1 configure through RJ45.............................................................................................................................. 10
5. Model test............................................................................................................................................................. 11
5.1 Default work mode test.............................................................................................................................. 11
6. Contact us............................................................................................................................................................. 13
7. Doc History.......................................................................................................................................................... 13
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
1. Product introduce
1.1 Introduction
Serial Device Server - RS232/RS485 to Ethernet converter is an Equipment for convert TCP or UDP socket data
to RS232 or RS485, easy to use, low price, low power, 32 bits arm on board, high speed , high Stability.
This is a multi-functional embedded Ethernet serial data conversion device that integrates a TCP / IP protocol
stack, the user can easily use it to network functionality of embedded devices, upgrade the existing serial devices into a
network function, saving human and material resources and development time, make the product faster to market,
enhance their competitiveness.
There is 10/100M auto detected RJ45 interface, RS232 bound rate up to 230.4Kbps, can work at TCP Client, UDP
and UDP server mode, setup easily via RS232 or RJ45.
1.2 Function Features
100M high speed Ethernet card, 10/100M auto detect interface;
support AUTO MDI/MDIX, Can use a crossover cable or parallel cable connection;
RS232 bound rate can set up from 300 to 256000
RS485 bound rate can set up from 300 to 115200
Work mode TCP Client, UDP, UDP Server
Virtual serial port supported;
across the gateway, across switches, routers
Can work in LAN, also can work on the Internet (external network)
Working port, destination IP address and port can be easily set up;
Automatically connection to ensure a reliable network to establish the TCP connection;
Transmission distance: RS232 - 15 meters, RS485 - 1000 meters, cable 200 meters (after the switches
together through the Internet, no distance limit)
1.3 Product Features
32 bits ARM CPU inside;
LAN : 10/100Mbps; protect: Built-2KV isolated electromagnetic;
RS232 x 1: TXD RXD GND;
RS485 x 1: A (Data+) B (Data-); 120 Ohms Termination Resistance on board.
network protocol: ETHERNETARP IP UDP TCP ICMP;
Software tool: configuration software, TCP/UDP test soft, RS232 debug soft.
Configuration method: RS232 or via Ethernet, free software available.
Power : DC 5V / 500mA
Size (L×W×H): 90×83×25(mm)
Operating temperature: -25~75°C.
Save the environment: -40~85°C, 5~95%RH.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
1.4 Applications Area
Serial device server module for connecting serial industrial automation equipment such as PLC, sensors, meters,
motors, drives, bar code readers and displays and design. Serial server module is widely used in attendance, access
control systems, Canteen machines, POS systems, building control, fire control, the banking system, engine room
monitoring, UPS monitoring, power, oil, environmental monitoring, industrial applications and other areas all need to
serial devices Data network management where you can use a serial device server solution.
1.5 Order information
Name Model interface Explain
Ethernet card for MCU USR-TCP232-T TTL For PCB embedded customers use,
with RJ45 Block
RS232/RS485 to Ethernet
convert module USR-TCP232-24 RS485/RS234 RS232/RS485 choose via Jumper
Ethernet to TTL
module USR-TCP232-D TTL DIP module，For PCB embedded
customers use，with out RJ45
Serial Device Server
(this product) USR-TCP232-300 RS232/RS485 With shell serial servers,
network setting parameters
Model Description: USR is our brand, TCP232 that TCPIP to serial module product, 2/4/T that serial-side level in
the form.
1.6 Electrical parameters
Operating voltage: 5V
Operating current: 200mA
Operating Temperature: -25 ~ 75 ° C
Storage Temperature: -40 ~ 85 ° C
Storage Humidity: 5% ~ 95% RH
1.7 Packet list
¾1. Serial Device Server - RS232/RS485 to Ethernet converter * 1
¾2. 110~240VAC to 5V DC power adapter * 1
¾3. Network cable * 1
¾4. RS232 cable (Male to Male: 2-3 3-2 cross) *1
¾5. CD with soft and user guide in English *1
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
2. Work mode
2.1 System Block Diagram
USR-TCP232-300 is bridge to connect the network to Serial device, with the RS232/RS485 to Ethernet convert
module; users can easily manage and control network devices, application diagram below.
2.2 TCPClient mode
When work at TCP client mode, the module auto connect to destination IP and port, make a TCP connection for
send or receive data. Destination IP can be a WAN IP or Ethernet IP.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
2.3 UDP client mode
Work at UDP mode, Module listen a UDP port, and pc listen a UDP port, when need to send data, UDP packet will
be send.
RS232
RS485
System
2.4 UDPserver Mode
Like the socket UDP server in pc API. Many to one data transfer supported, the data from uart/232/485 part will
be transformed to the last UDP packet’s address.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
PC-A
PC-B
RS232
RS485
System
2.5 TCP server Mode
According to number of the TCP connecting, the hardware/software implement may be varying. So, only OEM
version supported.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
3. Hardware Description
3.1 LED status
There is two leds in RJ45 connector, one is green, and the other is yellow. And 1 power led.
LED name description
red Power Light When Power on
green Link state Light when 100Mbps network linked
yellow Data transfer Blink when there is data in or out
3.2 Interface Description
RS232 interface：
RS232 use 9 pin female (hole), only 3 pins in use, others are NC, the detail is below.
ID Mark Description
2 TXD RS232 Send of module
3 RXD RS232 Receive of module
5 GND Ground
We can offer two kinds of serial lines, if needed, please choose to buy:
1. Male to Female direct serial cable: connect serial server and the computer directly to debugging and Testing.
2. Male to Male and Cross Pin2 and Pin3 serial cable: used to connect RS232 serial port server and general user
equipment.
RS485 interface:
RS485 has two linesA(data+) and B (data-), 120 Ohms Termination Resistance on board.
Notice: this module use Jumpers to change work for RS232 or RS485, by default it work at RS232 mode, if you
need to use RS485, please open the box and change the jumpers.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
RJ45 internet interface:
Auto detected 10M/100M RJ45 interface, support AUTO MDI/MDIX，that is to say you can use crossover cable
or a straight cable to connect it to PC for test.
Pin Name Description
1 TX+ Transceiver Data+
2 TX- Transceiver Data-
3 RX+ Receive Data+
4 n/c Not connected
5 n/c Not connected
6 RX- Receive Data-
7 n/c Not connected
8 n/c Not connected
3.3 Mechanical Dimensions
50mm
10
80mm
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
4. Configure
parameters: work mode，source IP, source port，net mask，gateway，UART baud rate，destination IP，destination
port.
4.1 configure through RJ45
Note: This module does not support network settings by default, if you need network settings module ,please tell
us before buying, network settings and serial port settings can only choose one.
The steps for setting via RJ45:
1. Connect the module to the LAN with PC or connect to PC, power on the module.
2. Open the setup software, click Search, find modules, and choose the one you want to change settings.
3. Fill the settings you want at the left frame, and click Setup via RJ45.
4. (Optional step) after setup, the module will restart in 5 seconds; you can re click Search to check new config.
5. Power down the module and Power on, the module will work at new configuration.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
5. Model test
5.1 Default work mode test
The default work mode is TCP Client and the setting is same as the picture show on last page.
First, you can ping the module, if you are in the same LAN with the module.
Default work mode test:
1. What you need for test, A PC with a RS232 interface, 5V Power adapter, RS232 cable, Ethernet Cable, Test
software. If your PC has no RS232 interface, you can use a USB to RS232 convert product.
2. Hardware connects: Connect the module to your PC, RS232 to PC’s RS232 and Ethernet RJ45 to PC’s RJ45
Ethernet, you can use the Cross or Directly Connect net cable, because the module support AUTO MDI/MDIX.
3. Setup the PC’s IP address to 192.168.0.201
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
4. Open the test software, choose Correct COM port, open com port, listen TCP port.
1. After a short while, the module will connect to the software, as you can see 192.168.0.7:20108.
2. Now you can send from RS232, receive from Ethernet; and send from Ethernet, receive from RS232.
Serial Device Server - RS232/RS485 to Ethernet converter www.usr.cn
6. Contact us
Contact us:
Name: Jinan USR Technology Co., Ltd.
Website: http://www.usr.cn http://en.usr.cn
Address: Shengfu garden, D5-3-302, Jinan, Shandong, China
Email: sales@usr.cn tec@usr.cn
MSN: [email protected]
Phone: +86-531-55507297
7. Doc History
Version 1.0 2011-05-26
Version 1.1 2011-06-30 add new test software
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1
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