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SMG-5420 / RS422/485 Modbus Gateway

121 EUR
121 EUR
VAT included
Brand: Sollae Systems
SKU: 905366
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121 EUR
121 EUR

SMG-5420 – RS422/RS485 Modbus Gateway

SMG-5420 converts and routes Modbus data between serial Modbus networks and Modbus/TCP over Ethernet. It’s designed for RS422/RS485 field buses—ideal for multi-drop Modbus RTU/ASCII installations that need reliable IP connectivity.

RS422 / RS485
Terminal block, bias resistors + TVS
10/100 Ethernet
RJ-45 (auto-sense)
Up to 4 TCP Channels
Parallel client connections
Industrial Range
-40°C to +85°C
SMG-5420

Key features of the SMG-5420

  • • Modbus gateway between RS422/RS485 (RTU/ASCII) and Modbus/TCP over Ethernet.
  • • RS422/RS485 serial interface with embedded 3.9K biasing resistors and TVS for improved stability on noisy lines.
  • • Supports multiple TCP connections (up to 4 channels).
  • • Transmission modes: Modbus/RTU, Modbus/ASCII, and Bypass (raw TCP payload ↔ serial).
  • • IPv4/IPv6 dual stack plus SSL/TLS-capable networking functions.

SMG-5420: purpose-built for RS485 Modbus networks

SMG-5420 is a strong fit for multi-drop Modbus RTU/ASCII networks where RS485 wiring is preferred. Bridge your field bus to Ethernet so SCADA/HMI software can access devices using standard Modbus/TCP.

  • • Terminal block wiring makes RS422/RS485 deployment quick and service-friendly.
  • • Built-in bias resistors help maintain stable bus levels on longer runs and multi-drop installations.
Modbus protocol routing
Routes Modbus queries and responses between serial RTU/ASCII and Modbus/TCP clients on the network.
RS422/RS485 terminal block
Field-friendly wiring with embedded bias resistors and TVS protection for improved noise immunity.
10/100 Ethernet
Standard RJ-45 Ethernet interface for LAN connectivity and SCADA integration.
Up to 4 TCP channels
Multiple concurrent TCP connections for engineering tools and supervisory systems.
Flexible serial modes
Switch between RTU, ASCII, or Bypass mode to match your serial device protocol (or lack of it).
Industrial operation
Industrial temperature range (-40°C to +85°C) supports demanding installations.

Serial Physical Interface

Serial Interface

RS422/RS-485
Tx+, Tx-, Rx+, Rx-, 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

8bits, 7bits with Parity

Parity

None, Even, Odd, Mark, Space

Stop Bit

1, 2

Network Physical Interface

Network 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)

PWR

Red

RUN

Yellow

LINK

Green

MRX

Green

MTX

Green

STX

Green

SRX

Green

Management

spFinder

Configuration and Monitoring Tool through Network

Dimension

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

-40℃ ~ +85℃

Storage Temperature

-40℃ ~ +85℃

Certificate

KC

Registration(KN 32, KN 35)

CE

EMC 2014/30/EU, RoHS 2011/65/EU

FCC

FCC Part 15 Subpart B, Class A

Downloads
By Sollae.eu

Power Supply 5V / 3A

18.15 EUR
18.15 EUR
VAT included
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