Waveshare Industrial serial server, RS485 to RJ45 Ethernet, TCP/IP

The server features multiple functionalities, including a serial server, Modbus and MQTT gateway, RS485-to-JSON conversion, and more. Equipped with RS485 and Ethernet ports, it uses screw terminals for power input and supports a voltage range of 9 ~ 24 V.

Designed as a data collection device and an IoT gateway, it is tailored for industrial use. Its flame-resistant construction supports DIN-rail mounting, and its compact design ensures easy installation. The server is suitable for data collection applications, IoT gateways, IoT security, and intelligent device monitoring.

Main Advantages

• DIN-rail mountable design
• Functions as a Modbus gateway
• Supports multi-communication modes
• Terminal power supply capability
• RJ45 Ethernet connectivity
• MQTT and JSON compatibility
• Supports multiple hosts
• Multi-functional device
• Configurable via host/web interface
• Industrial-grade quality

Primary Function

The server's core functionality is bi-directional transparent data transmission between RS485 and Ethernet.

Modbus Gateway Support

Ideal for Modbus upgrades and compatible with 3D configuration software.

Multiple Communication Modes

Supported modes include TCP Server, TCP Client, UDP, and UDP multicast.

MQTT/JSON to Modbus Conversion

Allows flexible protocol conversion. As an MQTT gateway, the device can send serial data to an MQTT server via transparent transmission, supporting servers like Baidu Cloud MQTT, Alibaba Cloud MQTT, and China Mobile OneNet. Data from Modbus RTU or non-standard serial devices can be analyzed into JSON format and sent as MQTT packets.

As a JSON data collection gateway, it connects to devices via RS485 for automated data retrieval, converts it to JSON, and transmits it to a server. Supported protocols include Modbus RTU 645 Instrument (97 and 07 versions) and other non-standard RS485 protocols. JSON data can be sent via MQTT, HTTP POST, HTTP GET, etc., with configurable formats.

Multi-Host Polling Support

The server identifies and interacts with multiple network devices simultaneously without interference.

OUTLINE

• Communication Interfaces: RS485, screw terminal, supports 32 sub-devices
• Power Input: 9 ~ 24 V DC, screw terminal
• Dimensions: L x W x H: 87 x 36 x 59 mm

COMMUNICATION

• Ethernet: 10/100M auto-negotiation RJ45 with 2 KV surge protection
• Serial Port: RS485 × 1: RXD, TXD, GND

SERIAL PORT SPECIFICATIONS

• Baud Rate: 300 ~ 115200 bps
• Parity Bits: None, Odd, Even, Mark, Space
• Data Bits: 5 ~ 9 bits
• Flow Control: Not available

SOFTWARE

• Protocol: ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS
• Configuration: Host, Web Browser, Device Management Function Library
• Communication Methods: TCP/IP direct communication, VCOM
• Operating Modes: TCP Server, TCP Client (coexists with TCP Server), UDP, UDP Multicast