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Industrial Isolated 2-Ch RS485 to RJ45 Ethernet Serial Server Dual channels RS485 independent


Date:2023-07-13 17:15
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This is an RS232/485/422 device data acquisitor/IoT gateway designed for an industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS232/485/422 to JSON, etc. Adopting RS232/485/422 and Ethernet interface with PoE function, it can be connected with screw terminals for power input by the power port (outer diameter: 5.5mm, inner diameter: 2.1mm).

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[] This is a 2-ch RS485 device data acquisitor / IoT gateway designed for the industrial environment. Dual RS485 can work simultaneously without interfering with each other. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, and network switch. The module features dual RS485 and dual Ethernet ports (PoE function optional), uses a DC port (outer diameter: 5.5mm, inner diameter: 2.1mm) and screw terminal for power input. The case with rail-mount support, is small in size, easy to install, and cost-effective. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring...

Version Options


[] 2-CH RS485 TO ETH (B) : 

2-CH RS485 + Common network port + Electrical isolation

Power supply : DC 5.5 power port, 6 ~ 45V DC screw terminal

Ethernet : RJ45

[] 2-CH RS485 TO POE ETH (B) : 

2-CH RS485 + PoE network port + Electrical isolation

Power supply : DC 5.5 power port, 6 ~ 45V DC screw terminal, or PoE port

Ethernet : RJ45 with PoE support, IEEE 802.3af compliant

[] Model : 2-CH RS485 TO ETH (B) / 2-CH RS485 TO POE ETH (B)

Product Type : Serial server, Modbus Gateway, MQTT Gateway

Basic Function : Bi-directional transparent data transmission between RS485 and Ethernet

Communication interface : RS485 port × 2, Ethernet port × 2

Isolation Protection : Power isolation, Signal isolation


Ethernet : 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection

Serial port : Isolated RS485 (the 2 channels can receive and transmit independently at the same time)



Baudrate : 300 ~ 115200 bps

Parity bit : none, odd, even, mark, space

Data bit : 5 ~ 9 bits

Flow control : N/A



Configuration : host, web browser, device management functions library

Communication method : TCP/IP direct communication, VCOM

Operating mode : TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast


Operating temperature : -40℃ ~ 85℃

Humidity range : 5% ~ 95% relative humidity

Dimensions : L × W × H: 78.0 × 72.5 × 24.2 mm

Primary Function

[] Bi-Directional Transparent Data Transmission Between RS485 And Ethernet

Multi Power Supply Options

[] Support PoE Ethernet Port Power Supply*, Suitable For IEEE 802.3af PoE Standard

[] Support Screw Terminal And DC Power Port For Power Supply, DC 6~45V Wide Voltage Range Input

[] * This function is only available on the PoE version

Support Ethernet Port Cascade

[] Onboard 2-Ch Ethernet Ports For Communication And Cascade Either One Can Be Used For Dual Serial Server Network Communication, While The Other One Can Be Used For Cascading Or Communication With Other Devices

[] * Note: Each module in the cascade needs to be powered individually. If it is the POE version, it can be powered directly through the Ethernet cable. The working current of the module is 12V/150mA (MAX) and can be cascaded up to 8.

Rail-Mount Support

[] Industrial-Grade Rail Design, Compact Size, Easy Installation, Cost-Effective

Modbus Gateway Support

[] Suitable For Modbus Networking Upgrade, Can Be Used With Specific Configuration Software

Multi Communication Modes

[] Supports TCP Server / TCP Client / UDP Multicast / UDP Mode

[] * Note: This module is dual-channel, and each channel supports the above functions separately


[] More Flexible Conversion Between Different Protocols

[] When used as MQTT gateway, the devices can upload serial data to MQTT server by MQTT protocol through transparent transmission, supported servers including Baidu Cloud MQTT, Alibaba Cloud MQTT, China Mobile OneNet, etc. The acquired Modbus RTU or non-standard serial data can be parsed into JSON format and packaged into MQTTdata packet for uploading.

[] When used as JSON data acquisition gateway, the devices can be connected to data acquisition instruments through RS485 connection, then acquire data automatically, convert the data into JSON format, and finally post it to server. The acquired data supports Modbus RTU 645 instrument 97 version, 645 instrument 07 version, as well as sorts of non-standard RS485 protocols. The uploaded data format can be configured via host, and the JSON upload protocol can be MQTT protocol, HTTP POST protocol, HTTP GET protocol, and so on.

Multi Hosts Roll-Polling Support

[] Different Network Devices Will Be Identified And Responsed Respectively, No More Crosstalk Issue While Communicating With Multi Network Devices

User-Defined Heartbeat/Registration Packet

[] Easy For Cloud Communication And Device Identification

NTP Protocol Support

[] Getting Network Time Info For Serial Output Or Data Upload

Multi Configuration Methods

[] Supports Web Browser Configuration, Obtaining Dynamic IP Via DHCP, DNS Protocol Connected Domain Server Address

Multiple Protection, Safe And Stable

[] Onboard power supply and signal isolation, it can provide stable isolation voltage with high reliability and strong anti-interference. Built-in TVS (transient voltage suppression tube) can effectively suppress the surge voltage and transient peak voltage in the circuit, lightningproof & ESD protection. Built-in resettable fuse and protection diode to ensure stable output of current and voltage, prevents over-current and over-voltage proof, improve shock resistance

Aluminium Alloy Enclosure

[] Aluminium Alloy Enclosure With Sand Blasting And Anodic Oxidation Solid And Durable, Fashion And Good Hand Feeling

Interface Introduction

Outline Dimensions