25108 Ethernet serial server RS232 RS485 to RJ45 2 Ethernet ports - RS232 RS485 TO ETH (B)

Features at a Glance

This is a dual serial port device data acquirer/IoT gateway designed for industrial environment, 1 channel RS232 and 1 channel RS485 can work simultaneously without interfering with each other using Ethernet cable. It combines multiple functions in one, including serial server, Modbus gateway, MQTT gateway, RS232 and RS485 to JSON, etc. The other Ethernet port can be used as a network switch or for cascading, and PoE* function is optional for dual Ethernet ports. Provides two power supply methods: DC port (outer diameter: 5.5mm, inner diameter: 2.1mm) and screw terminal. The housing with rail mounting bracket is small in size, easy to install and cost-effective. It is suitable for applications such as data acquisition, IoT gateway, IoT safety and security, and intelligent instrument monitoring...

* This product is a PoE receiving device (PD), it must be connected to the PoE power supply and powered by the PSE device to work normally.

Support for cascading Ethernet ports

Built-in 2-channel Ethernet ports for communication and cascading.

Either one can be used for dual serial server network communication, while the other can be used for cascading or communication with other devices.

* Note: Each module in the cascade must be powered individually. The module operating current is 12V/150mA (MAX) and can be cascaded up to 8.

Rail Mounting Bracket

Industrial Grade Rail Design, Compact Size, Easy Installation, Cost Effective

Modbus Gateway Support

Suitable for Modbus network upgrade, can be used with specific configuration software

Multiple Modes of Communication

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

* Note: This module is dual channel and each channel supports the above functions separately

MQTT/JSON to Modbus

More Flexible Conversion Between Different Protocols

When used as an MQTT gateway, devices can upload serial data to the MQTT server via the 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 bundled into an MQTT data packet for uploading.

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

Multiple Protection, Safe and Stable

Built-in 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 surge and transient peak voltage in the circuit, lightning protection and ESD protection. Built-in resettable fuse and protection diode to ensure stable output of current and voltage, avoid overcurrent and overvoltage, improve shock resistance performance.