Arduino Opta® Micro Programmable Logic Controllers

Arduino Opta® Micro Programmable Logic Controllers (PLCs) are secure, easy-to-use devices with Industrial IoT capabilities. The Opta controllers allow users to scale up automation projects while exploiting the open Arduino ecosystem. Computing power enables various real-time control, monitoring, and predictive maintenance applications. A secure onboard element provides over-the-air firmware updates and remote control via the Arduino Cloud or third-party services.

Products Available

Opta Lite with Ethernet onboard and USB-C™ programming ports (AFX00003)
Opta RS485 which also adds an RS485 half duplex connectivity interface (AFX00001)
Opta Wi-Fi is the most versatile option, also featuring Wi-Fi® / BLUETOOTH® Low Energy connectivity (AFX00002)

Features

Easy and fast software development, starting from ready-to-use Arduino sketches, tutorials, and libraries
Optional support for standard IEC 61131-3 PLC languages
Fieldbus integration via Modbus TCP (Ethernet) and Modbus RTU (serial RS485)
Seamless IIoT connectivity (Ethernet / Wi-Fi / Bluetooth Low Energy)
Real-time remote monitoring via intuitive Arduino Cloud dashboards or third-party services

Security at the hardware level via onboard secure elements and compliance with X.509 Standard
Secure OTA firmware updates and cloud device management
High power relay switching (4 x 2.3kW)
Reliable by design, thanks to industrial certifications and Finder’s expertise in switching technology
Easy DIN rail installation

Applications

Industrial automation
- Conveyor belt management
- Gathering time information for automated labeling
- Real-time monitoring in manufacturing
- Automated Anomaly Detection
- Tank management

Building automation
- Intelligent roller blinds management
- Energy monitoring and optimization
- Smart sun shields operation
- HVAC systems control

Specifications

8x configurable digital/analog (0V to 10V) input
STM32H747XI Dual Arm® Cortex® Processor
- Cortex-M7 core up to 480MHz
- Cortex-M4 core up to 240MHz
Connectivity
- Support 10/100 Ethernet (TCP/IP or Modbus TCP)
- USB-C™
- Wi-Fi + Bluetooth Low Energy (Opta Wi-Fi only)
- RS485 half duplex (Opta RS485 and Opta Wi-Fi only)
Memory
- 1MB RAM (programming)
- 2MB internal + 16MB Flash QSPI
RTC
- 10-day (typical) power retention at +25°C
- NTP sync available through Ethernet

IP20 rated
4x relays (250V_AC, 10A) output
Programming languages
- Arduino programming language via IDE
- IEC-61131-3 as an option:
  - Ladder Diagram (LD)
  - Function Block Diagram (FBD)
  - Sequential Function Chart (SFC)
  - Structured Text (ST)
  - Instruction List (IL)
ATECC608B secure element
12V_DC to 24V_DC supply voltage range
-20°C to +50°C (-4°F to +122°F) operating temperature range

Webinar

Featuring two expert panelists from Arduino, this video webinar provides device designers with everything they need to know to develop and scale their industrial automation projects.

View Scale Up Automation with the new Arduino Opta microPLC Webinar

Videos

Tutorials

Getting Started with Opta
Getting Started with Modbus RTU on Opta
Getting Started with RS-485 on Opta

Tank Level Monitoring with the Opta
BLUETOOTH Low Energy, Wi-Fi, and Ethernet on Opta (AFX00002 only)