คู่มือผู้ใช้ตัวแปลง RS485 เป็นอีเธอร์เน็ต Waveshare

1. บทนำ

The Waveshare RS485 to Ethernet Converter (Model: RS485 TO ETH) is a device designed to facilitate communication between RS485 serial devices and an Ethernet network. It enables seamless data exchange, allowing RS485 devices to be integrated into modern IP-based systems. This manual provides essential information for the proper setup, operation, and maintenance of the converter.

Figure 1: Waveshare RS485 to Ethernet Converter with included power adapter. This image displays the Waveshare RS485 to Ethernet Converter unit alongside its power adapter. The converter features a black casing with green labels indicating DC 5V power input, Ethernet port, and RS485 screw terminals (A+, B-, GND). The power adapter is a standard wall plug type.

2. สินค้าหมดview และคุณสมบัติ

The Waveshare RS485 to Ethernet Converter is built with a focus on performance and reliability. Key features include:

• M0 series 32-bit ARM processor for fast and efficient operation.
• 10/100M Auto-MDI/MDIX Ethernet interface, compatible with both cross-over and straight-through cables.
• Configurable RS485 baud rate from 600bps to 230.4Kbps, supporting None, Odd, Even, Mark, and Space parity options.
• Multiple working modes: TCP Server, TCP Client, UDP Server, UDP Client, and HTTPD Client (supports GET and POST).
• Flexible configuration options via webpage, AT commands, serial protocol, and network protocol.
• Support for customized heartbeat and registration packets for connection verification and device identification.
• ปรับแต่งได้ webpage for module configuration.
• RFC2217-like protocol support for devices with changing serial settings.
• KeepAlive mechanism for detecting broken connections and automatic re-connection.
• Time-out reboot (no-data reboot) for long-term stable connections, with configurable reboot time.
• DNS domain name resolution and configurable DNS server.
• DHCP support for auto-obtained IP or static IP configuration.
• Firmware upgradable via the network.
• Hardware and software options for restoring to factory settings.
• Customizable MAC address.

3. การตั้งค่า

Follow these steps to set up your Waveshare RS485 to Ethernet Converter:

1. การเชื่อมต่อไฟฟ้า: Connect a DC 5V power supply to the DC 5V input jack on the converter. The recommended input voltagอีคือ 5.0-7.0V.
2. การเชื่อมต่ออีเทอร์เน็ต: Connect an Ethernet cable from the converter's RJ45 port to your network switch or router. The converter supports 10/100M Auto-MDI/MDIX.
3. การเชื่อมต่อ RS485: Connect your RS485 device to the green screw terminal block. Ensure correct polarity for A+ (positive), B- (negative), and GND (ground).
4. การกำหนดค่าเริ่มต้น: The device comes with default network settings. These are typically printed on a label on the bottom of the unit.

Figure 2: Bottom label of Waveshare RS485 to Ethernet Converter showing default network settings. The bottom of the converter unit displays a label with essential network configuration details: Model: RS485 TO ETH, Username: admin, Default IP: 192.168.0.7, Password: admin, MAC address, and Input power requirements (DC5-7V/500mA). The manufacturer's website, www.waveshare.net, is also listed.

For detailed setup instructions and advanced configurations, refer to the official Waveshare product wiki at www.waveshare.net.

4. โหมดการทำงาน

ตัวแปลงสัญญาณรองรับโหมดการทำงานต่างๆ เพื่อให้เหมาะกับความต้องการใช้งานที่แตกต่างกัน:

• เซิร์ฟเวอร์ TCP: The converter listens for incoming TCP connections from clients.
• ไคลเอ็นต์ TCP: The converter initiates a TCP connection to a specified server.
• เซิร์ฟเวอร์ UDP: The converter listens for incoming UDP packets.
• ไคลเอ็นต์ UDP: The converter sends UDP packets to a specified destination.
• ไคลเอ็นต์ HTTPD: The converter can act as an HTTP client, supporting GET and POST requests.

5. การกำหนดค่า

The Waveshare RS485 to Ethernet Converter offers multiple methods for configuration:

• Webpage Configuration: Access the converter's built-in web interface using its IP address (default: 192.168.0.7) in a web browser. Use the default username 'admin' and password 'admin' for login.
• คำสั่ง AT: Configure the device using AT commands sent via the serial port.
• โปรโตคอลแบบอนุกรม: Utilize a dedicated serial protocol for configuration.
• โปรโตคอลเครือข่าย: Configuration can also be performed over the network using specific protocols.

อัพเกรดเฟิร์มแวร์: The device's firmware can be updated over the network, ensuring access to the latest features and improvements.

รีเซ็ตเป็นค่าเริ่มต้นจากโรงงาน: The converter can be restored to its factory default settings via both software commands and a hardware reset button (Reload button).

6. ซอฟต์แวร์

Waveshare provides supporting software to assist with the use and configuration of the converter:

• Module Configuration Software: A dedicated application for configuring the converter's parameters.
• TCP/UDP Testing Tool: Software for testing TCP and UDP communication.
• VCOM Virtual Serial Port Software: Allows the Ethernet port to be mapped as a virtual serial port on a computer.

Example code for various platforms (e.g., host computer socket, VB, C++, Delphi, Android, iOS) is also available from the manufacturer.

7. ข้อมูลจำเพาะ

Figure 3: Technical specifications and dimension diagram for Waveshare RS485 to Ethernet Converter. A detailed diagram presenting the technical specifications for Ethernet, RS485, Power, and Environment, along with precise dimensions of the converter unit in millimeters. Key measurements like length, width, and height are indicated.

8 การแก้ไขปัญหา

If you encounter issues with your Waveshare RS485 to Ethernet Converter, consider the following:

• ไม่มีการเชื่อมต่อเครือข่าย: Verify that the Ethernet cable is securely connected and that your network infrastructure (router/switch) is functioning correctly. Check the converter's network indicator lights.
• ไม่สามารถเข้าถึง Web อินเทอร์เฟซ: Ensure your computer's IP address is in the same subnet as the converter's default IP (192.168.0.7). If the IP has been changed, try to recall the new IP or perform a factory reset.
• RS485 Communication Failure: Double-check the RS485 wiring for correct A+ and B- polarity. Ensure the baud rate, data bits, stop bits, and parity settings on the converter match those of your RS485 device.
• ปัญหาเรื่องพลังงาน: Confirm that the power adapter is correctly connected and providing the specified DC 5V (5.0-7.0V) power.
• โปรโตคอล Modbus: Please note that this converter does ไม่ natively support Modbus protocol. If your application requires Modbus, additional software or gateway solutions may be necessary.
• ความไม่เสถียรโดยทั่วไป: If the device experiences intermittent issues, consider performing a factory reset and reconfiguring it. Ensure the operating environment is within specified temperature ranges.

For more in-depth troubleshooting guides and technical support, visit the official Waveshare webเว็บไซต์.

9. การบำรุงรักษา

To ensure the longevity and reliable operation of your converter:

• รักษาอุปกรณ์ให้สะอาดและปราศจากฝุ่น ใช้ผ้านุ่มและแห้งทำความสะอาด
• Operate the device within the specified environmental conditions (temperature and humidity).
• หลีกเลี่ยงการให้อุปกรณ์สัมผัสกับความชื้นที่มากเกินไปหรืออุณหภูมิที่สูงเกินไป
• ตรวจสอบให้แน่ใจว่ามีการระบายอากาศที่เหมาะสมรอบๆ ตัวเครื่องเพื่อป้องกันความร้อนสูงเกินไป

10. การรับประกันและการสนับสนุน

For information regarding product warranty, technical support, and additional resources, please refer to the official Waveshare webเว็บไซต์:

www.waveshare.net

การ website provides comprehensive documentation, software downloads, and contact information for customer assistance.