RS232/485/422 TO ETH (B) Adapter (24759)
RS232/485/422 TO ETH (B) Adapter (24759)
SKU: 2668
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Description
Industrial DIN-Rail Mount Serial Server — RS232/485/422 to Ethernet (RJ45)
RS232/485/422 ↔ Ethernet interface converter with TCP/IP, Modbus, MQTT support, and optional PoE power. Designed for industrial environments: data acquisition, IoT gateway, equipment monitoring.
Brief Overview
This device is an industrial data acquisition / IoT gateway for RS232/485/422. It combines multiple functions in one enclosure: serial server, Modbus gateway, MQTT gateway, RS485 to JSON conversion, etc. The module is equipped with RS232/485/422 and Ethernet ports (PoE — optional), supports power via a DC connector (outer diameter 5.5 mm, inner 2.1 mm) and screw terminals. The DIN-rail mount enclosure is compact, easy to install, and cost-effective.
- Serial server, Modbus gateway, MQTT gateway
- RS232, RS485, RS422, and Ethernet interfaces in one device
- Optional PoE power (IEEE 802.3af standard)
- DIN-rail mounting, compact aluminum enclosure
- Galvanic isolation of power and signals
- Operating temperature range: −40°C … +85°C
Version Options
RS232/485/422 TO ETH (B)
Standard network port + galvanic isolation
RS232/485/422 TO POE ETH (B)
PoE network port + galvanic isolation
Technical Specifications
| RS485 TO ETH (B) | RS485 TO POE ETH (B) | RS232/485/422 TO ETH (B) | RS232/485/422 TO POE ETH (B) | |
|---|---|---|---|---|
| Standard network port | PoE port + galvanic isolation | Multi-interface + standard port + galvanic isolation | Multi-interface + PoE port + galvanic isolation | |
| 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) or PoE | DC connector, 6–36 V DC (screw terminal) | DC connector, 6–36 V DC (screw terminal) or PoE |
| Galvanic Isolation | Absent | Power and signal isolation | ||
| Communication | ||||
| Ethernet | Standard port | PoE port, IEEE 802.3af | Standard port | PoE port, IEEE 802.3af |
| 10/100 Mbps, auto-negotiation, RJ45 connector, 2 kV surge protection | ||||
| Serial Port | RS485 | Isolated RS485 | Isolated RS232/485/422 | |
| Serial Port Parameters | ||||
| Baud Rate | 300 – 115,200 baud | |||
| 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 program, web browser, device management function library | |||
| Communication Method | Direct TCP/IP connection, VCOM | |||
| Operating Modes | TCP server, TCP client (simultaneously with TCP server), UDP, UDP multicast | |||
| Operating Conditions | ||||
| Operating Temperature | −40°C … +85°C | |||
| Humidity | 5% – 95% relative humidity | |||
| Dimensions (L × W × H) | 87 × 36 × 59 mm | 88.7 × 72.5 × 24.2 mm | ||
Main Function
Bidirectional transparent data transmission between RS232/485/422 and Ethernet.
Three Different Interfaces
Built-in RS232 / RS485 / RS422 interfaces — suitable for more application scenarios.
The Ethernet port can simultaneously send data to all three serial ports.
Only one of the RS232, RS485, or RS422 ports can simultaneously send data to the Ethernet port.
Multiple Power Supply Methods
- Power via PoE Ethernet port* — supports IEEE 802.3af standard
- Power via screw terminal or DC connector — DC 6–36 V, wide voltage range
*PoE function is only available in the PoE version.
DIN-Rail Mounting
Conveniently combine multiple serial servers on one rail — flexible and easy installation.
Modbus Gateway Support
Suitable for Modbus network upgrades. Can be used with dedicated configuration software.
Multiple Communication Modes
Support: TCP server / TCP client / UDP / UDP multicast.
MQTT/JSON ↔ Modbus
Flexible conversion between different protocols.
When used as an MQTT gateway, the device transmits serial data to the MQTT server via transparent transmission. Supported: Baidu Cloud MQTT, Alibaba Cloud MQTT, China Mobile OneNet, etc. 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, the device connects to measuring instruments via RS485, automatically collects data, converts it to JSON format, and sends it to the server. Supported: Modbus RTU, 645 instruments (versions 97 and 07), and non-standard RS485 protocols. Upload format is configurable via the host; protocols: MQTT, HTTP POST, HTTP GET, etc.
Supports Multi-Host Cyclic Polling
Different network devices are identified and processed separately — no cross-interference when working with multiple network devices.
Configurable Heartbeat / Registration Packet
Simplifies cloud communication and device identification.
NTP Protocol Support
Obtain network time for serial output or data upload.
Multiple Configuration Methods
Supports configuration via web browser, dynamic IP address acquisition via DHCP, connection to domain server via DNS.
Multi-Level Protection — Reliable and Stable
Built-in galvanic isolation of power and signals ensures stable isolation voltage with high reliability and interference immunity. Built-in TVS (transient voltage suppressor) effectively suppresses surges and transient peak voltages — protection against lightning and ESD. Built-in self-recovering fuse and protective diode provide stable current and voltage output, protection against overcurrent and overvoltage.
Aluminum Enclosure
Sandblasted and anodized aluminum alloy enclosure. Durable and long-lasting, modern appearance and pleasant to the touch.
Interface Description
Product Photos
Dimensions
Supports Batch Orders and Customization
- Software and hardware customization
- Modification of hardware interfaces, logo, label, enclosure, and web pages
Description
Industrial DIN-Rail Mount Serial Server — RS232/485/422 to Ethernet (RJ45)
RS232/485/422 ↔ Ethernet interface converter with TCP/IP, Modbus, MQTT support, and optional PoE power. Designed for industrial environments: data acquisition, IoT gateway, equipment monitoring.
Brief Overview
This device is an industrial data acquisition / IoT gateway for RS232/485/422. It combines multiple functions in one enclosure: serial server, Modbus gateway, MQTT gateway, RS485 to JSON conversion, etc. The module is equipped with RS232/485/422 and Ethernet ports (PoE — optional), supports power via a DC connector (outer diameter 5.5 mm, inner 2.1 mm) and screw terminals. The DIN-rail mount enclosure is compact, easy to install, and cost-effective.
- Serial server, Modbus gateway, MQTT gateway
- RS232, RS485, RS422, and Ethernet interfaces in one device
- Optional PoE power (IEEE 802.3af standard)
- DIN-rail mounting, compact aluminum enclosure
- Galvanic isolation of power and signals
- Operating temperature range: −40°C … +85°C
Version Options
RS232/485/422 TO ETH (B)
Standard network port + galvanic isolation
RS232/485/422 TO POE ETH (B)
PoE network port + galvanic isolation
Technical Specifications
| RS485 TO ETH (B) | RS485 TO POE ETH (B) | RS232/485/422 TO ETH (B) | RS232/485/422 TO POE ETH (B) | |
|---|---|---|---|---|
| Standard network port | PoE port + galvanic isolation | Multi-interface + standard port + galvanic isolation | Multi-interface + PoE port + galvanic isolation | |
| 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) or PoE | DC connector, 6–36 V DC (screw terminal) | DC connector, 6–36 V DC (screw terminal) or PoE |
| Galvanic Isolation | Absent | Power and signal isolation | ||
| Communication | ||||
| Ethernet | Standard port | PoE port, IEEE 802.3af | Standard port | PoE port, IEEE 802.3af |
| 10/100 Mbps, auto-negotiation, RJ45 connector, 2 kV surge protection | ||||
| Serial Port | RS485 | Isolated RS485 | Isolated RS232/485/422 | |
| Serial Port Parameters | ||||
| Baud Rate | 300 – 115,200 baud | |||
| 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 program, web browser, device management function library | |||
| Communication Method | Direct TCP/IP connection, VCOM | |||
| Operating Modes | TCP server, TCP client (simultaneously with TCP server), UDP, UDP multicast | |||
| Operating Conditions | ||||
| Operating Temperature | −40°C … +85°C | |||
| Humidity | 5% – 95% relative humidity | |||
| Dimensions (L × W × H) | 87 × 36 × 59 mm | 88.7 × 72.5 × 24.2 mm | ||
Main Function
Bidirectional transparent data transmission between RS232/485/422 and Ethernet.
Three Different Interfaces
Built-in RS232 / RS485 / RS422 interfaces — suitable for more application scenarios.
The Ethernet port can simultaneously send data to all three serial ports.
Only one of the RS232, RS485, or RS422 ports can simultaneously send data to the Ethernet port.
Multiple Power Supply Methods
- Power via PoE Ethernet port* — supports IEEE 802.3af standard
- Power via screw terminal or DC connector — DC 6–36 V, wide voltage range
*PoE function is only available in the PoE version.
DIN-Rail Mounting
Conveniently combine multiple serial servers on one rail — flexible and easy installation.
Modbus Gateway Support
Suitable for Modbus network upgrades. Can be used with dedicated configuration software.
Multiple Communication Modes
Support: TCP server / TCP client / UDP / UDP multicast.
MQTT/JSON ↔ Modbus
Flexible conversion between different protocols.
When used as an MQTT gateway, the device transmits serial data to the MQTT server via transparent transmission. Supported: Baidu Cloud MQTT, Alibaba Cloud MQTT, China Mobile OneNet, etc. 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, the device connects to measuring instruments via RS485, automatically collects data, converts it to JSON format, and sends it to the server. Supported: Modbus RTU, 645 instruments (versions 97 and 07), and non-standard RS485 protocols. Upload format is configurable via the host; protocols: MQTT, HTTP POST, HTTP GET, etc.
Supports Multi-Host Cyclic Polling
Different network devices are identified and processed separately — no cross-interference when working with multiple network devices.
Configurable Heartbeat / Registration Packet
Simplifies cloud communication and device identification.
NTP Protocol Support
Obtain network time for serial output or data upload.
Multiple Configuration Methods
Supports configuration via web browser, dynamic IP address acquisition via DHCP, connection to domain server via DNS.
Multi-Level Protection — Reliable and Stable
Built-in galvanic isolation of power and signals ensures stable isolation voltage with high reliability and interference immunity. Built-in TVS (transient voltage suppressor) effectively suppresses surges and transient peak voltages — protection against lightning and ESD. Built-in self-recovering fuse and protective diode provide stable current and voltage output, protection against overcurrent and overvoltage.
Aluminum Enclosure
Sandblasted and anodized aluminum alloy enclosure. Durable and long-lasting, modern appearance and pleasant to the touch.
Interface Description
Product Photos
Dimensions
Supports Batch Orders and Customization
- Software and hardware customization
- Modification of hardware interfaces, logo, label, enclosure, and web pages
