MG5028 Series

8-port RS485 / 422 to Ethernet Modbus Gateway

Provide 8-channel RS-485/422 serial ports
300~460800bps line speed non-blocking communication
Conform to TCP/IP, UDP, ModbusTCP protocols
Conform to ModbusRTU, ARP, ICMP, HTTP and TFTP Client protocols
Support TCP server, TCP client, UDP and Modbus TCP(RTU) transmission modes
Support RTU Master mode, maximum support 16 TCP master connections in this mode
Support Slave ID mapping function, maximum support 32 mappings
Support Web management
Support through gateway, cross-routing communication
Full-isolation characteristic, Power Isolation 3KV, RS485/422 Isolation 2.5KV, ESD Protection 15KV
Metal housing with IP40 and high level EMC protection
Support  wide  voltage 12~48V DC power input
Overview Specifications Models Resources

Overview of 8-port RS485 / 422 to Ethernet Modbus Gateway

MG5028 series is serial Modbus Gateway that can make serial Modbus device be equipped with networking capability instantly and centrally manage the scattered serial devices and hosts via network. This product supports 8 RS-485/422 Combo serial ports to 2 100M Ethernet copper ports which supports electromagnetic isolation. It adopts rail or wall mounting to meet the requirements of different application scenes.

Modbus Gateway supports multiple network protocols, such as TCP, UDP, TELNET, ARP, ICMP, HTTP, DNS and DHCP protocol. It also possesses complete management functions, including Access Control, Rapid Configuration, Online Upgrading and so on. Each serial port supports 4 TCP or UDP session connections, and it also supports TCP Server, TCP Client, UDP Server, UDP Client operating modes and TELNET, WEB access modes. 

MG5028 series Modbus Gateway adopt high-strength IP40 protective housing, industrial grade EMC design, support Auto-Negotiation adaptive technology, provide a comprehensive LED status indicator, support  redundant wide voltage 12~48VDC power input to increase the reliability of the communication network.
Double IP design, provide 2 10/100Base-T (x) RJ45 ports and 8-channel RS-485 serial ports. It is easy and convenient to centralize the management of decentralized serial devices and hosts through the network, the communication rate support 300~460800bps optional. Built-in Modbus TCP, Modbus RTU and Modbus ASCII protocol make it easy for users to connect Modbus Ethernet devices to Modbus serial devices.

MG5028 series has good interface isolation characteristic. The RS485/422 not only have ±15V antistatic, but also have 2500V interface isolation, as adding 2500V AC voltage between RS485 wire and shell.

Hardware adopts fanless, low power consumption, wide temperature and voltage design and has passed rigorous industrial standard tests, which can suit for the industrial scene environment with harsh requirements for EMC. It can be widely used in PLC control and management, Building Automation System, Health Care Automation System, measuring instrument and environmental forces monitoring system.


Specifications of 8-port RS485 / 422 to Ethernet Modbus Gateway

Standard: 10Base-T, 100Base-TX
Rate: 10/100M Automatic Flow Control, MDI/MDI-X Autotunning
Interface quantity: 2
Interface form: RJ45
Duplex mode: Full/Half Duplex Mode Self-adaptive

Operating mode: TCP Server, TCP Client, UDP Server, UDP Client
Gateway Protocols
Built-in Modbus TCP and Modbus RTU protocols
Support Modbus RTU/ASCII
Support RTU Master mode
Support Modbus Slave mode
Maximum support 16 TCP master connections

Serial Port
Standard: RS-485/422, RS-232
RS-422 signal:TX+,TX-, RX+, RX-, GND
RS-485 signal: D+, D-, GND
Check digit: None, Even, ODD
Data bits: 5bit, 6bit, 7bit, 8bit
Stop bit: 1bit, 2bit
Baud rate: 300~460800bps
Directional control: RS-485 adopts data flow auto control technology
Load capacity: RS-485/422 side supports 32 point polling environment (customizable 128 points)
Interface form: RS-485/422 and adopts 5-bit 3.84mm pitch terminal blocks
Isolation Characteristic
RS485/422 Power Isolation 3KV
RS485/422 Signal Isolation 2.5KV
RS485/422 ESD Protection 15KV

Power supply indicator, Ethernet port indicator, serial port indicator
Power Supply Wide DC power input 12~48VDC (12V/24V/48V typical)
7.62mm industrial terminal block

No-load Consumption:< 1.2W (@24VDC)
Full-load Consumption:< 1.68W (@24VDC)
Mechanical Properties Dimension(W×H×D): 40mm×128mm×103mm
Net weight: 430g
Housing: Metal, IP40 protection
Installation: DIN rail mounting


Working temperature:-40℃~85℃
Storage temperature: -40℃~ 85℃
Relative humidity: 5% ~ 95% (no condensing) 

Industrial Standard

IEC61000-4-2(ESD):±8KV Contact, ±15KV Air
IEC61000-4-4(EFT):Power ±4KV, Data Cable ±4KV
IEC61000-4-5(Surge):Power ±4KV CM/ ±1KV DM, Data Cable±4KV
IEC61000-4-6(CS):3V (10KHZ-150KHZ), 10V (150KHZ-80MHZ)
IEC61000-4-16(MS):30V COUNT 300V, 1S
IEC60068-2-32(Free Fall)
IEC61000-6-2(General Industrial Standard)
Warranty 5 years

Available Models

100M Copper Port









  MG5028 Datasheet 



  MG5028 Quick Installation Guide