Adapter RS485 TO POE ETH (B), PoE Ethernet port + Electrical isolation 23273
Adapter RS485 TO POE ETH (B), PoE Ethernet port + Electrical isolation 23273
SKU: 2670
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Description
RS485 TO POE ETH (B) — Industrial Serial Server
RS485 → RJ45 Ethernet | DIN-Rail MountIndustrial RS485 to Ethernet (RJ45) Serial Server, TCP/IP ↔ Serial interface, DIN-rail mount support, optional PoE function.
Version Options
RS485 TO ETH (B)
Standard Ethernet port (B)
9–24V power, no galvanic isolation
RS485 TO ETH (C)
Standard Ethernet port (C)
6–36V power, with galvanic isolation
RS485 TO POE ETH (B)
PoE Ethernet port + galvanic isolation
The RS485 TO POE ETH (B) is a hardware-upgraded version: it supports power via a PoE Ethernet port, features power and signal isolation, ensuring higher safety in industrial environments. All three versions have identical software functionality.
Overview of Features
This is an RS485 data acquisition device / IoT gateway for industrial environments. It combines several functions in one enclosure: serial server, Modbus gateway, MQTT gateway, RS485 to JSON conversion, etc. The module is equipped with RS485 and Ethernet ports (PoE function optional), and uses screw terminals for power connection. The DIN-rail mountable enclosure is compact and easy to install. Suitable for data acquisition, IoT gateways, security systems, and smart instrument monitoring.
Technical Specifications
| Product | RS485 TO ETH (B) | RS485 TO ETH (C) | RS485 TO POE ETH (B) | RS232/485/422 TO ETH (B) | RS232/485/422 TO POE ETH (B) |
|---|---|---|---|---|---|
| Device Type | Serial server, Modbus gateway, MQTT gateway | ||||
| Main Function | Bidirectional transparent data transmission between RS485 and Ethernet | Bidirectional transparent data transmission between RS232/485/422 and Ethernet | |||
| Communication Interfaces | RS485 × 1, Ethernet × 1 | RS232 × 1, RS485 × 1, RS422 × 1, Ethernet × 1 | |||
| Power Supply | 9–24 V DC, screw terminal | 6–36 V DC, screw terminal | 6–36 V DC, screw terminal or PoE port | DC 5.5mm connector, 6–36 V DC, screw terminal | DC 5.5mm connector, 6–36 V DC, screw terminal or PoE port |
| Galvanic Isolation | None | Power and signal isolation | |||
| Communication | |||||
| Ethernet | Standard network port | PoE port, IEEE 802.3af standard | Standard network port | PoE port, IEEE 802.3af standard | |
| RJ45 connector with 10/100 Mbps auto-negotiation, 2KV surge protection | |||||
| Serial Port | RS485 | Isolated RS485 | Isolated RS232/485/422 | ||
| Serial Port Parameters | |||||
| Baud Rate | 300–115200 bps | ||||
| Parity Bit | None, odd, even, mark, space | ||||
| Data Bits | 5–9 bits | ||||
| Flow Control | None | ||||
| Software | |||||
| Protocols | ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS | ||||
| Configuration | Host, web browser, device management function library | ||||
| Communication Method | Direct TCP/IP connection, VCOM | ||||
| Operating Modes | TCP server, TCP client (parallel with TCP server), UDP, UDP multicast | ||||
| Operating Conditions | |||||
| Operating Temperature | -40°C … +85°C | ||||
| Humidity | 5%–95% RH | ||||
| Dimensions (L × W × H) | 87 × 36 × 59 mm | 88.7 × 72.5 × 24.2 mm | |||
Main Function
Bidirectional transparent data transmission between RS485 and Ethernet
DIN-Rail Mount
Conveniently combine multiple serial servers on a single rail — flexible and easy installation.
Modbus Gateway Support
Suitable for upgrading Modbus networks; compatible with 3D configuration software.
Multiple Communication Modes
Supports TCP server / TCP client / UDP / UDP multicast modes.
MQTT/JSON ↔ Modbus
Flexible conversion between different protocols.
When used as an MQTT gateway, devices can send serial data to an MQTT server via transparent MQTT protocol transmission. Servers supported: Baidu Cloud MQTT, Alibaba Cloud MQTT, China Mobile OneNet, etc. Received Modbus RTU data or non-standard serial data can be parsed into JSON format and packed into an MQTT packet for upload.
When used as a JSON data acquisition gateway, devices connect to meters via RS485, automatically collect data, convert it to JSON format, and send it to the server. Protocols supported: Modbus RTU, 645 version 97 meters, 645 version 07 meters, and various non-standard RS485 protocols. The upload data format is configured via the host; the JSON upload protocol can be MQTT, HTTP POST, or HTTP GET.
Support for Multiple Host Polling
Different network devices are identified and receive responses separately — without crosstalk when working with multiple network devices.
Customizable Heartbeat / Registration Packet
Simplifies cloud communication and device identification.
NTP Protocol Support
Obtain network time for output via serial port or data upload.
Multiple Configuration Methods
Supports configuration via web browser, dynamic IP address acquisition via DHCP, connection to domain server via DNS protocol.
Interface Description
* The power supply range is indicated on the label of the corresponding device version.
Dimensions
Resources & Support
- Wiki (RS485 TO ETH B): www.waveshare.com/wiki/RS485_TO_ETH_(B)
- Wiki (RS485 TO ETH C): www.waveshare.com/wiki/RS485_TO_ETH_(C)
- Wiki (RS485 TO POE ETH B): www.waveshare.com/wiki/RS485_TO_POE_ETH_(B)
Model Selection Table
| Model | Network Port | Galvanic Isolation | Serial Port Type | Power Supply Method | Voltage | Dimensions (L × W × H) |
|---|---|---|---|---|---|---|
 RS485 TO ETH (B) |
Standard | — | Single serial port | Screw terminal | DC 9–24 V | 87.0 × 36.0 × 59.0 mm |
 RS485 TO POE ETH (B) |
PoE | Power + signal | Single serial port | Screw terminal + PoE | DC 6–36 V | 87.0 × 36.0 × 59.0 mm |
 RS485 TO ETH (C) |
Standard | Power + signal | Single serial port | Screw terminal | DC 6–36 V | 87.0 × 36.0 × 59.0 mm |
 |
Description
RS485 TO POE ETH (B) — Industrial Serial Server
RS485 → RJ45 Ethernet | DIN-Rail MountIndustrial RS485 to Ethernet (RJ45) Serial Server, TCP/IP ↔ Serial interface, DIN-rail mount support, optional PoE function.
Version Options
RS485 TO ETH (B)
Standard Ethernet port (B)
9–24V power, no galvanic isolation
RS485 TO ETH (C)
Standard Ethernet port (C)
6–36V power, with galvanic isolation
RS485 TO POE ETH (B)
PoE Ethernet port + galvanic isolation
The RS485 TO POE ETH (B) is a hardware-upgraded version: it supports power via a PoE Ethernet port, features power and signal isolation, ensuring higher safety in industrial environments. All three versions have identical software functionality.
Overview of Features
This is an RS485 data acquisition device / IoT gateway for industrial environments. It combines several functions in one enclosure: serial server, Modbus gateway, MQTT gateway, RS485 to JSON conversion, etc. The module is equipped with RS485 and Ethernet ports (PoE function optional), and uses screw terminals for power connection. The DIN-rail mountable enclosure is compact and easy to install. Suitable for data acquisition, IoT gateways, security systems, and smart instrument monitoring.
Technical Specifications
| Product | RS485 TO ETH (B) | RS485 TO ETH (C) | RS485 TO POE ETH (B) | RS232/485/422 TO ETH (B) | RS232/485/422 TO POE ETH (B) |
|---|---|---|---|---|---|
| Device Type | Serial server, Modbus gateway, MQTT gateway | ||||
| Main Function | Bidirectional transparent data transmission between RS485 and Ethernet | Bidirectional transparent data transmission between RS232/485/422 and Ethernet | |||
| Communication Interfaces | RS485 × 1, Ethernet × 1 | RS232 × 1, RS485 × 1, RS422 × 1, Ethernet × 1 | |||
| Power Supply | 9–24 V DC, screw terminal | 6–36 V DC, screw terminal | 6–36 V DC, screw terminal or PoE port | DC 5.5mm connector, 6–36 V DC, screw terminal | DC 5.5mm connector, 6–36 V DC, screw terminal or PoE port |
| Galvanic Isolation | None | Power and signal isolation | |||
| Communication | |||||
| Ethernet | Standard network port | PoE port, IEEE 802.3af standard | Standard network port | PoE port, IEEE 802.3af standard | |
| RJ45 connector with 10/100 Mbps auto-negotiation, 2KV surge protection | |||||
| Serial Port | RS485 | Isolated RS485 | Isolated RS232/485/422 | ||
| Serial Port Parameters | |||||
| Baud Rate | 300–115200 bps | ||||
| Parity Bit | None, odd, even, mark, space | ||||
| Data Bits | 5–9 bits | ||||
| Flow Control | None | ||||
| Software | |||||
| Protocols | ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS | ||||
| Configuration | Host, web browser, device management function library | ||||
| Communication Method | Direct TCP/IP connection, VCOM | ||||
| Operating Modes | TCP server, TCP client (parallel with TCP server), UDP, UDP multicast | ||||
| Operating Conditions | |||||
| Operating Temperature | -40°C … +85°C | ||||
| Humidity | 5%–95% RH | ||||
| Dimensions (L × W × H) | 87 × 36 × 59 mm | 88.7 × 72.5 × 24.2 mm | |||
Main Function
Bidirectional transparent data transmission between RS485 and Ethernet
DIN-Rail Mount
Conveniently combine multiple serial servers on a single rail — flexible and easy installation.
Modbus Gateway Support
Suitable for upgrading Modbus networks; compatible with 3D configuration software.
Multiple Communication Modes
Supports TCP server / TCP client / UDP / UDP multicast modes.
MQTT/JSON ↔ Modbus
Flexible conversion between different protocols.
When used as an MQTT gateway, devices can send serial data to an MQTT server via transparent MQTT protocol transmission. Servers supported: Baidu Cloud MQTT, Alibaba Cloud MQTT, China Mobile OneNet, etc. Received Modbus RTU data or non-standard serial data can be parsed into JSON format and packed into an MQTT packet for upload.
When used as a JSON data acquisition gateway, devices connect to meters via RS485, automatically collect data, convert it to JSON format, and send it to the server. Protocols supported: Modbus RTU, 645 version 97 meters, 645 version 07 meters, and various non-standard RS485 protocols. The upload data format is configured via the host; the JSON upload protocol can be MQTT, HTTP POST, or HTTP GET.
Support for Multiple Host Polling
Different network devices are identified and receive responses separately — without crosstalk when working with multiple network devices.
Customizable Heartbeat / Registration Packet
Simplifies cloud communication and device identification.
NTP Protocol Support
Obtain network time for output via serial port or data upload.
Multiple Configuration Methods
Supports configuration via web browser, dynamic IP address acquisition via DHCP, connection to domain server via DNS protocol.
Interface Description
* The power supply range is indicated on the label of the corresponding device version.
Dimensions
Resources & Support
- Wiki (RS485 TO ETH B): www.waveshare.com/wiki/RS485_TO_ETH_(B)
- Wiki (RS485 TO ETH C): www.waveshare.com/wiki/RS485_TO_ETH_(C)
- Wiki (RS485 TO POE ETH B): www.waveshare.com/wiki/RS485_TO_POE_ETH_(B)
Model Selection Table
| Model | Network Port | Galvanic Isolation | Serial Port Type | Power Supply Method | Voltage | Dimensions (L × W × H) |
|---|---|---|---|---|---|---|
| RS485 TO ETH (B) |
Standard | — | Single serial port | Screw terminal | DC 9–24 V | 87.0 × 36.0 × 59.0 mm |
| RS485 TO POE ETH (B) |
PoE | Power + signal | Single serial port | Screw terminal + PoE | DC 6–36 V | 87.0 × 36.0 × 59.0 mm |
| RS485 TO ETH (C) |
Standard | Power + signal | Single serial port | Screw terminal | DC 6–36 V | 87.0 × 36.0 × 59.0 mm |
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