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Arduino Opta RS485

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Arduino Opta RS485

The Arduino Opta RS485 is a secure, industrial-grade micro PLC with IoT capabilities, designed in partnership with Finder. It combines the ease of the Arduino ecosystem with professional PLC functionality, supporting both Arduino sketches and standard IEC-61131-3 PLC languages including Ladder Diagram, Function Block Diagram, Structured Text, and more.

Powered by a dual-core STM32H747XI (Cortex-M7 at 480 MHz + Cortex-M4 at 240 MHz), it handles real-time control, monitoring, and predictive maintenance applications. The RS485 variant features Ethernet, USB-C, and RS485 half-duplex connectivity for versatile industrial communication.

Key Features

  • Dual-Core Processor – STM32H747XI with Cortex-M7 (480 MHz) and Cortex-M4 (240 MHz)
  • 8 Configurable Inputs – Digital or analogue (0–10V)
  • 4 Relay Outputs – Rated at 250V AC, 10A
  • RS485 Half Duplex – Industrial serial communication
  • Ethernet – 10/100 Mbps (TCP/IP or Modbus TCP)
  • USB-C Programming Port – For firmware upload and configuration
  • Multi-Language Support – Arduino IDE, Ladder Diagram (LD), Function Block Diagram (FBD), Sequential Function Chart (SFC), Structured Text (ST), Instruction List (IL)
  • Hardware Security – ATECC608B secure element with X.509 compliance
  • OTA Updates – Secure over-the-air firmware updates via Arduino Cloud
  • Real-Time Clock – ~10-day power retention at 25°C with NTP sync via Ethernet

Specifications

  • Processor – STM32H747XI Dual ARM Cortex-M7 + M4
  • Memory – 1 MB RAM, 2 MB internal flash + 16 MB QSPI flash
  • Inputs – 8× configurable digital/analogue (0–10V)
  • Outputs – 4× relays (250V AC, 10A)
  • Connectivity – 10/100 Ethernet, USB-C, RS485 half duplex
  • Supply Voltage – 12–24V DC
  • Operating Temperature – -20°C to +50°C
  • IP Rating – IP20
  • Dimensions – 69 × 80 × 90 mm
  • Weight – 210 g
  • Certifications – cULus listed, ENEC, CE

Ideal For

  • Industrial automation and process control
  • Building management systems
  • Predictive maintenance and monitoring
  • Modbus TCP/RS485 integration projects

Package Contents

  • 1× Arduino Opta RS485

Resources

$138.29

Original: $460.98

-70%
Arduino Opta RS485

$460.98

$138.29

Product Information

Shipping & Returns

Description

The Arduino Opta RS485 is a secure, industrial-grade micro PLC with IoT capabilities, designed in partnership with Finder. It combines the ease of the Arduino ecosystem with professional PLC functionality, supporting both Arduino sketches and standard IEC-61131-3 PLC languages including Ladder Diagram, Function Block Diagram, Structured Text, and more.

Powered by a dual-core STM32H747XI (Cortex-M7 at 480 MHz + Cortex-M4 at 240 MHz), it handles real-time control, monitoring, and predictive maintenance applications. The RS485 variant features Ethernet, USB-C, and RS485 half-duplex connectivity for versatile industrial communication.

Key Features

  • Dual-Core Processor – STM32H747XI with Cortex-M7 (480 MHz) and Cortex-M4 (240 MHz)
  • 8 Configurable Inputs – Digital or analogue (0–10V)
  • 4 Relay Outputs – Rated at 250V AC, 10A
  • RS485 Half Duplex – Industrial serial communication
  • Ethernet – 10/100 Mbps (TCP/IP or Modbus TCP)
  • USB-C Programming Port – For firmware upload and configuration
  • Multi-Language Support – Arduino IDE, Ladder Diagram (LD), Function Block Diagram (FBD), Sequential Function Chart (SFC), Structured Text (ST), Instruction List (IL)
  • Hardware Security – ATECC608B secure element with X.509 compliance
  • OTA Updates – Secure over-the-air firmware updates via Arduino Cloud
  • Real-Time Clock – ~10-day power retention at 25°C with NTP sync via Ethernet

Specifications

  • Processor – STM32H747XI Dual ARM Cortex-M7 + M4
  • Memory – 1 MB RAM, 2 MB internal flash + 16 MB QSPI flash
  • Inputs – 8× configurable digital/analogue (0–10V)
  • Outputs – 4× relays (250V AC, 10A)
  • Connectivity – 10/100 Ethernet, USB-C, RS485 half duplex
  • Supply Voltage – 12–24V DC
  • Operating Temperature – -20°C to +50°C
  • IP Rating – IP20
  • Dimensions – 69 × 80 × 90 mm
  • Weight – 210 g
  • Certifications – cULus listed, ENEC, CE

Ideal For

  • Industrial automation and process control
  • Building management systems
  • Predictive maintenance and monitoring
  • Modbus TCP/RS485 integration projects

Package Contents

  • 1× Arduino Opta RS485

Resources