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Arduino Opta RS485 Micro PLC (Ethernet and USB-C ports, RS485)

Reference RBD-3097

Brand Arduino Official

Arduino Opta RS485 – secure micro PLC with industrial IoT support
Powered by STM32H747XI dual-core Cortex-M7 + M4 MCU
Supports Arduino sketches and IEC 61131-3 PLC languages (LD, FBD, ST, SFC, IL)
Built-in Ethernet, USB-C, and RS485 connectivity for versatile integration
Onboard secure element with X.509 compliance for reliable data security
DIN rail compatible, ideal for automation, energy, and remote monitoring

Description
Product Details

Description

The Arduino Opta RS485 Micro PLC is an industrial-grade controller designed for PLC engineers, automation developers, and IoT integrators. Built on the STM32H747XI dual-core Cortex-M7 + Cortex-M4 MCU, it provides the processing power needed for real-time control, monitoring, and predictive maintenance. Supporting both Arduino sketches and IEC 61131-3 PLC programming languages (Ladder, FBD, ST, SFC, IL), Opta makes it simple to develop and deploy robust automation solutions. With built-in Ethernet, USB-C, and RS485 interfaces, it integrates seamlessly with industrial networks and Modbus systems, while the ATECC608B secure element ensures hardware-to-cloud data protection with X.509 compliance. The Opta RS485 is designed for OTA firmware updates, remote management, and intuitive dashboards via Arduino Cloud or third-party services, making it an excellent choice for smart factories, energy systems, and IoT applications. DIN rail compatibility, rugged IP20 protection, and support for 12–24VDC operation make it production-ready for industrial environments. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Features:

Industrial IoT PLC – Combines PLC reliability with Arduino flexibility.
Powerful MCU – STM32H747XI dual-core Cortex-M7 + M4 for real-time processing.
Multiple Programming Options – Arduino IDE + IEC 61131-3 standard languages.
Rich Connectivity – Ethernet, USB-C, and RS485 support Modbus TCP and RTU.
Strong Security – ATECC608B secure element with X.509 compliance.
OTA Updates – Remote firmware upgrades and cloud integration.
Flexible I/O – 8 analog/digital inputs and 4 relays (10A each, NO).
Industrial-Grade Design – DIN rail mount, IP20 rated, -20°C to +50°C operating range.

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Applications:

Energy Management – Monitor and control power usage in industrial systems.
Tank Level Monitoring – Automate liquid level measurement and control.
Remote Terminal Unit (RTU) – Reliable Modbus TCP/RTU integration for SCADA systems.
Predictive Maintenance – Track and forecast equipment performance.
Smart Factories – Deploy automation, monitoring, and IoT-enabled solutions.
Building Automation – Manage HVAC, lighting, and security systems.

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General Specifications
Model	Arduino Opta RS485 Micro PLC
Supply Voltage	12–24VDC
Inputs	8 (analog/digital configurable)
Outputs	4 relays, Normally Open (NO), max 10A each
Processor	STM32H747XI dual-core Cortex-M7 + Cortex-M4
RAM	1 MB
Flash Memory	2 MB + 16 MB QSPI
Programming Languages	Arduino IDE, IEC 61131-3 (LD, FBD, ST, SFC, IL)
Communication Interfaces	Ethernet 10/100 (TCP/IP, Modbus TCP), RS485 (half duplex), USB-C
USB-C Functionality	Programming, refresh, host/device ops
Security	ATECC608B secure element, X.509 compliance
IP Protection	IP20
Operating Temperature	-20°C to +50°C
DIN Rail Compatibility	Yes
OTA Firmware Support	Yes
Application	Industrial IoT, automation, energy, SCADA
Shipment Weight	0.250 kg
Shipment Dimensions	11 × 9 × 5 cm

Please allow 5% measuring deviation due to manual measurement.

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Documentation:

Figure 1: Product Image

Figure 2: Connection Diagram for Modbus RTU with RS-485 interface

Documents

Package Includes:

1 x Arduino Opta RS485 Micro PLC (Ethernet and USB-C ports, RS485)

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Product Details

Reference RBD-3097

In stock 4 Items

Specific References

EAN13: 3097

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