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User Manual for WAVESHARE models including: Ethernet Converter EU Head, RS232, 485 TO ETH
RS232/485 TO ETH User Manual 5/22/19 www.waveshare.com/wiki 1 / 21 RS232/485 TO ETH User Manual
May 22, 2019 — Web Server screenshot as follow: 3.3. AT COMMAND. We have specific user manual for AT commands. 3.3.1. SERIAL AT COMMAND.
File Info : application/pdf, 21 Pages, 1.37MB
DocumentDocumentRS232/485 TO ETH User Manual RS232/485 TO ETH User Manual 5/22/19 www.waveshare.com/wiki 1 / 21 RS232/485 TO ETH User Manual CONTENTS Features............................................................................................................................................... 4 1. Get Start ........................................................................................................................... 5 1.1. Application Diagram................................................................................................... 5 1.2. Hardware Design ......................................................................................................... 5 1.2.1. Hardware Dimensions................................................................................... 5 1.2.2. LED ........................................................................................................................ 6 2. Product Functions........................................................................................................ 7 2.1. Basic Functions ............................................................................................................. 8 2.1.1. Static IP/DHCP .................................................................................................. 8 2.1.2. Reset to default settings................................................................................ 8 2.2. Socket functions ........................................................................................................... 9 2.2.1. TCP Client ........................................................................................................... 9 2.2.2. TCP Server.......................................................................................................... 9 2.2.3. UDP Client.........................................................................................................10 2.2.4. UDP Server .......................................................................................................11 2.2.5. HTTP Client......................................................................................................11 2.2.6. WebSocket........................................................................................................12 2.3. Serial port .....................................................................................................................13 2.3.1. Serial port basic parameters.....................................................................13 2.3.2. VCOM Application..........................................................................................13 2.3.3. Flow Control ....................................................................................................13 2.3.4. Serial package methods ..............................................................................13 2.3.5. Baud rate synchronization.........................................................................13 2.4. Features.........................................................................................................................14 2.4.1. Identity packet function..............................................................................14 2.4.2. Heartbeat packet function .........................................................................14 2.4.3. Non-persistent connection.........................................................................14 2.4.4. Modbus gateway ............................................................................................14 2.4.5. Network printing ...........................................................................................15 2.4.6. Editable Web Server.....................................................................................15 3. Parameter Setting......................................................................................................16 3.1. Setup software ............................................................................................................16 3.2. Web Server ...................................................................................................................17 3.3. AT command................................................................................................................17 3.3.1. Serial AT command.......................................................................................17 5/22/19 www.waveshare.com/wiki 2 / 21 RS232/485 TO ETH User Manual 3.3.2. Network AT command .................................................................................17 4. Contact Us .....................................................................................................................19 5. Disclaimer.....................................................................................................................20 6. Update History ............................................................................................................21 5/22/19 www.waveshare.com/wiki 3 / 21 RS232/485 TO ETH User Manual 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 5/22/19 www.waveshare.com/wiki 4 / 21 RS232/485 TO ETH User Manual 1. GET START Product link: https://www.waveshare.com/wiki/RS232/485_TO_ETH Setup software: https://www.waveshare.com/wiki/RS232/485_TO_ETH_Software Demo Code: https://www.waveshare.com/wiki/File:PC_Socket_Demo.zip 1.1. APPLICATION DIAGRAM 1.2. HARDWARE DESIGN Figure 1 Application Diagram 1.2.1. HARDWARE DIMENSIONS 5/22/19 Figure 2 Hardware Dimensions www.waveshare.com/wiki 5 / 21 RS232/485 TO ETH User Manual 1.2.2. LED LED POWER WORK 232TX 232RX 485TX 485RX Table 1 LED Status Light: Power on Off: Power off Blink: Working normally Off or light: Not working normally Blink: Sending data to serial(RS232) Off: No data sending to serial(RS232) Blink: Receiving data from serial(RS232) Off: No data receiving from serial(RS232) Blink: Sending data to serial(RS485) Off: No data sending to serial(RS485) Blink: Receiving data from serial(RS485) Off: No data receiving from serial(RS485) 5/22/19 www.waveshare.com/wiki 6 / 21 RS232/485 TO ETH User Manual 2. PRODUCT FUNCTIONS This chapter introduces the functions of USR-TCP232-RS232/485 TO ETH as the following diagram shown, you can get an overall knowledge of it. Serial Port Packaging Socket A Socket B TCPS/TCPC/UDPS/UDPC/HTTPD Client USR CLOUD Keep-Alive Identity Packet TCPC/UDPC Serial Heartbeat Packet Network Heartbeat Packet Serial Port Serial Port Device Serial Port Packaging Webserver Websocket Network data Transmission Network Serial AT Command Parameter Query/Set AT Command Mode ModbusTCP Gateway Mobus Gateway Figure 3 Product Functions diagram 5/22/19 www.waveshare.com/wiki 7 / 21 RS232/485 TO ETH User Manual 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 RS232/485 TO ETH 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 RS232/485 TO ETH and press Reload button, then power on the RS232/485 TO ETH 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 RS232/485 TO ETH. AT command: User can send AT+RELD to reset to default settings. 5/22/19 www.waveshare.com/wiki 8 / 21 RS232/485 TO ETH User Manual 2.2. SOCKET FUNCTIONS RS232/485 TO ETH 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 4 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, RS232/485 TO ETH will send Keep-Alive package in every 15 second to check TCP connection and RS232/485 TO ETH will disconnect and reconnect to server if any connection exception occurs. TCP Client mode also supports baud rate synchronization, USR Cloud and Modbus gateway. RS232/485 TO ETH works in TCP Client mode needs connect to TCP Server and needs set the parameter: Remote IP/Port. RS232/485 TO ETH 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 5/22/19 Figure 5 TCP Server www.waveshare.com/wiki 9 / 21 RS232/485 TO ETH User Manual RS232/485 TO ETH 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. RS232/485 TO ETH 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 RS232/485 TO ETH in TCP Server mode simultaneously. RS232/485 TO ETH works in TCP Server mode supports 8 client connections at most. RS232/485 TO ETH also supports Keep-Alive function, baud rate synchronization and Modbus gateway. 2.2.3. UDP CLIENT Figure 6 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, RS232/485 TO ETH will only communicate with Remote IP/Port. If data don't from Remote IP/Port, it won't be received by RS232/485 TO ETH. In UDP Client mode, if user configure Remote IP to 255.255.255.255, RS232/485 TO ETH 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. 5/22/19 www.waveshare.com/wiki 10 / 21 RS232/485 TO ETH User Manual 2.2.4. UDP SERVER Figure 7 UDP Server In UDP Server mode, RS232/485 TO ETH 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 8 HTTP Client data=ABC GET/1.php?data=ABC HTTP/1.1 Host: www.usr.cn:80 User-Agent: Mozilla/4.0 Connection: close Serial Device 5/22/19 RS232/485 TO ETH HTTP/1.1 200 OK HTTP Server Data: Wed, 24 Jun 2015 04:08:35 GMT ABC Server.Apache/2.0.63(Win32)PHP/5. 2.4 X-Powered-By: PHP/5.2.14 Cache-Control: max-age=31104000 Expires: Fri, 18 Aug 2017 03:25:47 GMT Content-Length: 3 Connection: close Content-Type: text/html ABC Figure 9 HTTP Client www.waveshare.com/wiki 11 / 21 RS232/485 TO ETH User Manual In HTTP Client mode, RS232/485 TO ETH can achieve data transmission between serial port device and HTTP server. User just needs to configure RS232/485 TO ETH 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 10 WebSocket WebSocket function can achieve real-time interaction between RS232 interface and Web Server and display user data on Web Server. 5/22/19 www.waveshare.com/wiki 12 / 21 RS232/485 TO ETH User Manual 2.3. SERIAL PORT 2.3.1. SERIAL PORT BASIC PARAMETERS Parameters Baud Rate Data Bits Stop Bits Parity Bits Range 600~230.4Kbps 5, 6, 7, 8 1, 2 None, Odd, Even, Mark, Space 2.3.2. VCOM APPLICATION Figure 11 Serial port basic parameters User can download VCOM software from: Figure 14 VCOM application https://www.waveshare.com/wiki/RS232/485_TO_ETH_Software. Through this software user can set up connection between RS232/485 TO ETH and virtual serial to solve the problem that traditional equipment PC software used in serial port communication way. 2.3.3. FLOW CONTROL RS232/485 TO ETH 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. RS232/485 TO ETH serial package time: Default is 4 bytes sending time, range from 0 to 255. RS232/485 TO ETH 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. 5/22/19 www.waveshare.com/wiki 13 / 21 RS232/485 TO ETH User Manual 2.4. FEATURES 2.4.1. IDENTITY PACKET FUNC TION Figure 12 Identity Packet application diagram Identity packet is used for identifying the device when RS232/485 TO ETH 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: RS232/485 TO ETH 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 RS232/485 TO ETH support non-persistent connection function in TCP Client mode. When RS232/485 TO ETH adopts this function, RS232/485 TO ETH 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. 5/22/19 www.waveshare.com/wiki 14 / 21 RS232/485 TO ETH User Manual Modbus RTU<=>Modbus TCP: Set RS232/485 TO ETH in TCP Server or TCP Client mode, then user can set RS232/485 TO ETH with Modbus RTU<=>Modbus TCP function. Data transmission diagram as follow: Figure 13 Modbus RTU<=>Modbus TCP Modbus polling: RS232/485 TO ETH support Modbus polling function. Figure 14 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 RS232/485 TO ETH 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. 5/22/19 www.waveshare.com/wiki 15 / 21 RS232/485 TO ETH User Manual 3. PARAMETER SETTING There are three ways to configure RS232/485 TO ETH. They are setup software, Web Server and AT command. 3.1. SETUP SOFTWARE User can download setup software from https://www.waveshare.com/wiki/RS232/485_TO_ETH_Software When user want to configure the RS232/485 TO ETH by setup software, user can run setup software, search RS232/485 TO ETH in same LAN and configure the RS232/485 TO ETH as follow: Figure 15 Setup software After researching RS232/485 TO ETH and clicking RS232/485 TO ETH 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. 5/22/19 www.waveshare.com/wiki 16 / 21 RS232/485 TO ETH User Manual 3.2. WEB SERVER User can connect PC to RS232/485 TO ETH through LAN port and enter Web Server to configure. Web Server default parameters as follow: Table 2 Web server default parameters Parameter Default settings Web server IP address 192.168.0.7 User name admin Password admin After firstly connecting PC to RS232/485 TO ETH, 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 16 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. 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 5/22/19 www.waveshare.com/wiki 17 / 21 RS232/485 TO ETH User Manual network AT command must in same network segment). 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: Figure 17 Network AT Command 5/22/19 www.waveshare.com/wiki 18 / 21 RS232/485 TO ETH User Manual 4. CONTACT US Email: (order/shipment) sales@waveshare.com (tech support) service@waveshare.com (complaint) complaint@waveshare.com (apply for distributor) distributor@waveshare.com Skype: (order/shipment) (tech support) Whatsapp: Phone: Fax: sales@waveshare service@waveshare 86-13148830755 86-755-82807524 86-755-83042572 Address: Waveshare Electronics 10F, International Science & Technology Building, Fuhong Rd, Futian District, Shenzhen, China Website: www.waveshare.com 5/22/19 www.waveshare.com/wiki 19 / 21 RS232/485 TO ETH User Manual 5. DISCLAIMER This document provides the information of USR-TCP232-RS232/485 TO ETH 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. 5/22/19 www.waveshare.com/wiki 20 / 21 RS232/485 TO ETH User Manual 6. UPDATE HISTORY 2019-05-06 V1.0.0 Established. 5/22/19 www.waveshare.com/wiki 21 / 21