1. Kupu Whakataki
The Waveshare Industrial Serial Server RS485 to RJ45 Ethernet TCP/IP to Serial Module, Model RS485 TO ETH (B), is an industrial-grade device designed for data acquisition and IoT gateway applications. It integrates multiple functions including serial server, Modbus gateway, MQTT gateway, and RS485 to JSON conversion.
This module features RS485 and Ethernet ports, utilizes screw terminals for power input, and supports a 9~24V wide range power supply. Its rail-mount, flame-retardant case design ensures compact size and ease of installation, making it suitable for various industrial environments such as data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring.

2. Hua Neke Atuview
The RS485 TO ETH (B) module facilitates bi-directional transparent data transmission between RS485 and Ethernet. It supports various communication modes and protocols for flexible integration into existing systems.

2.1. Key Interfaces
- Tauranga RS485: For serial communication with RS485 devices.
- Tauranga Itarangi RJ45: For network connectivity (TCP/IP).
- Whakauru Hiko: Screw terminals for 9~24V DC power supply.
- Tohu LED: PWR (Power), LINK (Ethernet Link), ACT (Activity).

3. Tatūnga
3.1. Hononga Taapapa
- Tuku Hiko: Connect a 9~24V DC power supply to the screw terminals (V+ and V-). Ensure correct polarity. A 12V industrial DIN-rail power supply is recommended.
- Hononga Itarangi: Connect the RJ45 Ethernet port to your network switch or router using a standard Ethernet cable.
- RS485 Hononga: Connect your RS485 device to the RS485 screw terminals (485A, 485B).

3.2. Rail-Mount Installation
The module is designed for easy installation on a DIN-rail. Simply clip the module onto a standard DIN-rail in your industrial cabinet.

3.3. Whirihoranga Tuatahi
The module can be configured via a host, web browser, or device management functions library. For initial setup, it is often easiest to use a web pūtirotiro.
- Connect your computer to the same network as the module.
- Refer to the module's documentation for the default IP address and login credentials.
- Access the module's web interface through a browser to configure network settings (DHCP or static IP), serial port parameters (baud rate, parity, data bits, stop bits), and operating modes.
4. Aratau Mahi
The module supports various communication modes to suit different application requirements:
- Tūmau TCP: Allows multiple TCP clients to connect to the module and receive data from the serial device.
- Kiritaki TCP: The module actively connects to a remote TCP server, enabling bi-directional data transfer.
- UDP Mode: Supports UDP server and UDP client for connectionless data transmission.
- Kūaha Modbus: Converts Modbus RTU/ASCII data to Modbus TCP for seamless integration with Modbus TCP networks.
- Kūaha MQTT: Enables serial data upload to MQTT servers for IoT applications.
- RS485 to JSON: Converts RS485 data into JSON format for web-nga tono.


5. Whakatakotoranga
The following table details the technical specifications of the Waveshare Industrial Serial Server RS485 TO ETH (B) module:
| Kāwai | Tawhā | Uara |
|---|---|---|
| Whānui | Momo Hua | Serial server, Modbus Gateway, MQTT Gateway |
| Mahi Taketake | Bi-directional transparent data transmission between RS485 and Ethernet | |
| Tau tauira tūemi | RS485 KI ETH (B) | |
| Atanga | Atanga whakawhitiwhiti | RS485 port x 1, Ethernet port x 1 |
| Atanga Puku Maama | Itarangi | |
| Mana | Tuku hiko | 9 ~ 24V DC screw terminal |
| Momo Tuhono Hiko Matua | Ko nga pito kauri | |
| Parenga | Te Huringa Tango | N/C (Not applicable for this version) |
| Itarangi | Itarangi | Hononga RJ45 whiriwhiri-aunoa 10/100M |
| Rangatū | Tauranga rangatū | RS485 |
| Whakahau | 300 ~ 115200 bps | |
| Paritiki | kāore, taurite, taurite, tohu, mokowā | |
| Moka raraunga | 5 ~ 9 ngā moka | |
| Pūmanawa | Kawa | ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS |
| Whirihoranga | kaihautu, web browser, device management functions library | |
| Tikanga korero | Whakawhitiwhiti kōrero tika TCP/IP, VCOM | |
| Aratau mahi | TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast | |
| Taiao | Te pāmahana whakahaere | -40°C ~ 85°C |
| Te pāmahana rokiroki | -40°C ~ 100°C | |
| Awhe haumākū | 5% ~ 95% haumākū whanaunga | |
| Tinana | Ahu (L×W×H) | 87 × 36 × 59 mm |

6. Tiaki
- Te horoi: Use a soft, dry cloth to clean the module. Avoid using liquid cleaners or solvents.
- Nga Tikanga Taiao: Ensure the module operates within the specified temperature and humidity ranges to prevent damage and ensure optimal performance.
- Whakahōu Firmware: Periodically check the Waveshare official website for firmware updates to enhance functionality and security.
7. Te Raru
- No Power (PWR LED off): Verify the power supply connection and ensure the voltage is within the 9~24V DC range.
- No Network Link (LINK LED off): Check the Ethernet cable connection to the router/switch. Ensure the network device is powered on and functioning correctly.
- Kaore he Tuku Raraunga:
- Confirm serial port parameters (baud rate, parity, data bits, stop bits) match the connected RS485 device.
- Verify network settings (IP address, gateway, DNS) are correctly configured.
- Check the operating mode (TCP Server/Client, UDP) and ensure it aligns with your application.
- Ensure the RS485 wiring (A/B) is correct.
- Module Unresponsive: Try restarting the module by cycling its power. If the issue persists, perform a factory reset (refer to the full user manual for instructions on how to perform a factory reset).
8. Pūtāhui me te Tautoko
Waveshare products typically come with a standard manufacturer's warranty. For specific warranty details, technical support, or further assistance, please refer to the official Waveshare webpaetukutuku, whakapā atu ranei ki ta raatau ratonga kaihoko.
Additional resources, including detailed user manuals, software tools, and FAQs, can be found on the Waveshare product page for the RS485 TO ETH (B) module.





