1. Introduction
The Waveshare Industrial RS232/RS485 to Ethernet Converter is a robust device designed for reliable data transmission between serial devices (RS232/RS485) and an Ethernet network. It features a high-performance M4 series 32-bit ARM processor, ensuring stable and efficient operation in industrial environments. This converter supports dual serial ports, allowing independent operation of RS232 and RS485 interfaces simultaneously. Its versatile working modes and configuration options make it suitable for a wide range of applications.
2. Features
- Processor: M4 series 32-bit ARM processor with up to 120MHz frequency for fast, stable, and reliable performance.
- Ethernet Interface: 10/100M Auto-MDI/MDIX, compatible with both cross-over and straight-through cables.
- Dual Serial Ports: Independent RS232 and RS485 interfaces operating simultaneously.
- Configurable Baudrate: Supports 600bps to 230.4Kbps with five parity options (None, Odd, Even, Mark, Space).
- Multi-Indicators: LEDs for monitoring communication and working status.
- Working Modes: TCP Server, TCP Client, UDP Server, UDP Client, HTTPD Client (supports GET and POST).
- Modbus Support: Suitable for industrial applications.
- Websocket Support: Bi-directional transparent data transmission with RS232/RS485 via webpage.
- Configuration Methods: Via webpage, AT commands, serial protocol, and network protocol.
- Customization: Supports customized heartbeat packets, registration packets, and webpage.
- RFC2217-like Protocol: Communicates with devices whose serial settings may change.
- Connection Stability: KeepAlive mechanism, auto re-connecting, and time-out reboot.
- Network Features: DNS domain name resolution, DHCP (auto-obtained or static IP).
- Firmware: Upgradable via the network.
- Reset Options: Restore to factory settings via software and/or hardware.
- MAC Address: Comes with a default MAC address, which is customizable.
- Software Tools: Module configuration software, TCP/UDP testing tool, VCOM virtual serial port software.
3. Package Contents
Verify that all items listed below are included in your package:
- Waveshare Industrial RS232/RS485 to Ethernet Converter
- Power Adapter (DC 5V)
- Ethernet Cable
- RS232 Male-to-Male Cable
- RS232 Male-to-Female Cable
Image: The package contents include the main converter unit, a power adapter, an Ethernet cable, and two RS232 cables (male-to-male and male-to-female).
4. Product Overview
4.1. Components and Indicators
The converter features several ports and LED indicators to monitor its status and facilitate connections.
Image: Top view of the converter highlighting the RS232 port, RS485 terminals, Ethernet port, DC power input, and LED indicators.
- POWER LED: Indicates power status.
- WORK LED: Indicates device working status.
- 232TX/232RX LEDs: Indicate data transmission/reception activity on the RS232 port.
- 485TX/485RX LEDs: Indicate data transmission/reception activity on the RS485 port.
- Reload Button: Used for factory reset or other specific functions as per configuration.
4.2. Ports
- RS232 Port: Standard DB9 male connector for RS232 serial communication.
- RS485 Terminals: Screw terminals for RS485 differential pair (A+, B-) and ground.
- Ethernet Port: RJ45 connector for 10/100M Ethernet connection.
- DC Power Input: Barrel jack for DC 5-36V power supply.
- DC 5-36V Terminals: Screw terminals for alternative DC 5-36V power input.
Image: Side view of the converter showing the DB9 RS232 port and the green screw terminals for RS485.
Image: Side view of the converter showing the RJ45 Ethernet port and the DC power input barrel jack.
5. Setup
5.1. Initial Connection
- Connect Power: Connect the provided power adapter to the DC power input port (DC 5-36V). The POWER LED should illuminate.
- Connect Ethernet: Connect an Ethernet cable from the converter's RJ45 port to your network switch or router.
- Connect Serial Devices: Connect your RS232 device to the DB9 port and/or your RS485 device to the RS485 screw terminals.
5.2. Default Settings
The device comes with default network settings for initial configuration.
Image: Bottom label of the converter displaying default configuration details.
- Default IP: 192.168.0.7
- Username: admin
- Password: admin
- Input: DC 5-36V/500mA
- Default MAC Address: (Specific address printed on the label, e.g., 9CA525RD7B9A)
It is recommended to change the default login credentials after initial setup for security purposes.
6. Operating Modes
The converter supports various operating modes to suit different network communication requirements:
- TCP Server: The converter listens for incoming TCP connections from clients.
- TCP Client: The converter initiates a TCP connection to a specified remote server.
- UDP Server: The converter listens for incoming UDP packets.
- UDP Client: The converter sends UDP packets to a specified remote host and port.
- HTTPD Client: Supports HTTP GET and POST requests for data transmission.
- Modbus: Optimized for Modbus protocol communication, commonly used in industrial automation.
- Websocket: Enables bi-directional transparent data transmission between the serial port and a webpage.
7. Configuration
The converter's settings can be configured using several methods:
- Webpage: Access the converter's web interface by entering its IP address (default: 192.168.0.7) into a web browser. This provides a graphical interface for all settings.
- AT Commands: Configuration can be performed by sending specific AT commands via the serial port.
- Serial Protocol: A dedicated serial protocol allows for programmatic configuration.
- Network Protocol: Configuration can also be done over the network using specific protocols.
- Configuration Software: Waveshare provides dedicated software for easy configuration on a host computer.
8. Maintenance
- Firmware Upgrade: The device firmware can be upgraded via the network to incorporate new features or bug fixes. Refer to the Waveshare website for the latest firmware and upgrade instructions.
- Restore to Factory Settings: If configuration issues arise, the device can be restored to its factory default settings via software or by pressing the 'Reload' button (refer to specific instructions for the button sequence).
- KeepAlive Mechanism: The built-in KeepAlive mechanism helps detect broken connections and automatically re-establishes them, ensuring continuous operation.
- Time-out Reboot: Configure a time-out reboot (no-data reboot) to ensure long-term stable connections, especially in environments where intermittent communication might occur.
9. Troubleshooting
If you encounter issues with the converter, consider the following:
- No Power: Ensure the power adapter is correctly connected and providing the specified voltage (DC 5-36V). Check the POWER LED.
- No Network Connection: Verify the Ethernet cable connection. Check network settings (IP address, subnet mask, gateway). Ensure the Ethernet port LEDs are active.
- Serial Communication Failure: Check serial port wiring (RS232 pinout, RS485 A+/B- polarity). Verify baudrate, data bits, parity, and stop bits settings match the connected serial device. Observe 232TX/RX and 485TX/RX LEDs for activity.
- Cannot Access Web Interface: Ensure your computer's IP address is in the same subnet as the converter's default IP (192.168.0.x). Try pinging the converter's IP address.
- Intermittent Connection: Check for network interference or cable issues. Review KeepAlive and time-out reboot settings.
- Factory Reset: If configuration becomes problematic, perform a factory reset.
For further assistance, refer to the Waveshare official website or contact their technical support.
10. Specifications
| Feature | Specification |
|---|---|
| Processor | M4 series 32-bit ARM, 120 MHz |
| RAM | LPDDR4 |
| Memory Speed | 120 MHz |
| Ethernet Interface | 10/100M Auto-MDI/MDIX |
| Serial Ports | 1x RS232 (DB9), 1x RS485 (Screw Terminal) |
| Baudrate | 600bps ~ 230.4Kbps |
| Parity Options | None, Odd, Even, Mark, Space |
| Power Input | DC 5-36V (Barrel Jack or Screw Terminal) |
| Operating System | Linux (internal) |
| Item Weight | 1.1 pounds (approx. 0.5 kg) |
| Package Dimensions | 8.07 x 6.18 x 1.89 inches (approx. 20.5 x 15.7 x 4.8 cm) |
| Model Number | RS232/485 TO ETH |
| Connectivity Technology | Ethernet |
10.1. Physical Dimensions
Image: Technical drawing showing the dimensions of the converter in millimeters (e.g., 85.70mm height, 82.76mm width, 25.20mm depth).
11. Warranty and Support
For warranty information, technical support, and additional resources, please visit the official Waveshare website. You can find detailed documentation, software downloads, and contact information for customer service there.
Waveshare Official Website: www.waveshare.com
