This product is no longer available
We no longer stock Arduino Opta RS485, but here are current alternatives in Arduino Wireless and IoT.
Arduino Opta RS485
Discontinued
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
