Serial RS422/RS485 to Modbus Ethernet Gateway Modbus Gateway ezTCP SMG-5420

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  • Regular price $154.00
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The ezTCP SMG-5420 is an industrial Modbus Gateway that converts and routes Modbus data between the RS-422 / RS-485 serial line and Ethernet Modbus/TCP. This can help to communicate between the Modbus master (or slave) of the serial line and the Modbus slave (or master) of the network.

The SMG-5420 provides 10/100Mbps Ethernet and RS422/RS485 serial port connectivity.


  • RS422/485 Modbus Gateway
  • 10Base-T/100Base-TX Ethernet
  • RS232 Serial Port
  • Self-developed TCP/IP stack
  • Industrial temperature range (-40C ~ +85C)


  • Serial Physical Interface
    • Serial Interface: RS422/RS485
      TX+, TX-, RX+, RX-, GND with embedded 3.9K biasing resistors and TVS
      TRX+, TRX-, GND with embedded 3.9K biasing resistors and TVS
    • Connector: 3.5mm Pitch Terminal Block
  • Serial Port Property
    • Baudrate: 1,200bps ~ 230,400bps
    • Data Bits: 8 bits, 7 bits with Parity
    • Parity: None, Even, Odd, Mark, Space
    • Stop Bit: 1, 2
  • Network Physical Interface
    • 10Base-T/100Base-TX Ethernet (RJ45)
    • Ethernet Speed Auto Sense
    • 1:1 or Cross-over Cable Auto Sense
  • Software Functions
    • Protocols: IPv4/IPv6 dual stack
      TCP, UDP, ICMP, DHCP, Modbus/TCP, mDNS
      Modbus/RTU, Modbus/ASCII
  • Security
    • Password
  • Indicators (LEDs)
    • Power: Red
    • RUN: Yellow
    • LINK: Green
    • MRX: Green
    • MTX: Green
    • STX: Green
    • SRX: Green
  • Management
    • spFinder: Configuration and Monitoring Tool through Network
  • Dimensions
    • Size: 94mm x 57mm x 24mm
  • Operating Environment
    • Input Voltage: DC 5V±0.5V
    • Protection: Reverse Voltage Protection / Surge Protection
    • Current Consumption: 145mA Typical
    • Operating Temperature: -40C ~ +85C
    • Storage Temperature: -40C ~ +85C
  • Certifications
    • KC: Registration (KN 22, KN 35)
    • CE: EMC 2014/30/EU, RoHS 2011/65/EU
    • FCC: FCC Part 15 Subpart B, Class A

 Package includes:

1X SSMG-5420 ezTCP RS422/485 Modbus Gateway

The delivery of this item is stock to 2 weeks. Please contact us prior to placing your order for a specific delivery time. 

Documentation & Resources:

SMG-5420 / RS422/485 Modbus Gateway Web Page