Model Information: IS.MDUINO.21+

Product Overview

• Model Name: IS.MDUINO.21+
• Series: M-Duino Wi-Fi & BLE Family
• Type: Industrial Arduino-based PLC (Programmable Logic Controller)
• Manufacturer: Industrial Shields
• Core Board: Arduino Mega 2560
• Microcontroller: ATmega2560
• Clock Speed: 16 MHz

Power Supply

• Input Voltage Range: 12 to 24 VDC
• Rated Voltage: 24 VDC
• Power Consumption: 30 W max
• Max Current: 1.5 A
• Protection: Fuse (2.5 A), polarity protection
• Power Holding Time: 2 ms minimum
• Insulation Resistance: 20 MΩ minimum at 500 VDC
• Dielectric Strength: 2300 VAC for 1 minute (10 mA leakage max)

Memory Specifications

• Flash Memory: 256 KB (8 KB used by bootloader)
• SRAM: 8 KB
• EEPROM: 4 KB

Communication Interfaces

• Wi-Fi: Integrated
• Bluetooth Low Energy (BLE): Integrated
• Ethernet: Yes (W5500 chip)
• USB: For programming/debugging only (not for final application)
• Serial Ports:RS232 (via MAX232)RS485 (via MAX485)
• I2C: Expandable up to 127 devices
• SPI: Supported

Input/Output Specifications

Analog Inputs

• Quantity: 6
• Resolution: 10-bit
• Range: 0–10 VDC
• Type: Analog/Digital configurable

Analog Outputs

• Quantity: 7
• Resolution: 8-bit
• Range: 0–10 VDC
• Note: Cannot be used simultaneously with PWM outputs on same channel

Digital Inputs

• Quantity: 5
• Type: Isolated, 24 VDC
• Logic: Sink
• Galvanic Isolation: Yes
• Current: ~7.5 mA per input
• Interrupt Support: High-speed isolated inputs available

Digital Outputs

• Quantity: 3
• Type: Isolated, 24 VDC
• Logic: Source
• Max Current: 70 mA per output
• PWM Outputs: 3 (8-bit, 24 VDC, isolated)
• Relay Outputs: 0 (not available on this model)

Programming & Software

• Programming Language: Arduino IDE (C/C++ based)
• Control Method: Stored program method
• I/O Control: Cyclic scan + immediate refresh
• Installation: Requires adding Industrial Shields board package to Arduino IDE
• Open Source: Compatible with Arduino libraries and sketches

Environmental Specifications

• Operating Temperature: 0°C to +60°C
• Storage Temperature: –20°C to +60°C
• Humidity: 10% to 90% (no condensation)
• Shock Resistance: 80 m/s² in X, Y, Z directions (2 times each)
• Environment: No corrosive gases

Mechanical Specifications

• Dimensions (H×W×D): 119.5 × 70.1 × 101 mm
• Weight: 394 g max
• Mounting: DIN rail or panel mount (open-type controller, requires enclosure)
• Clearance: Minimum 25 cm from other components inside panel

Safety & Compliance

• CE Marking: Yes
• Installation: Must be installed in a housing/cabinet by qualified personnel
• Warnings:Do not exceed 24 VDC inputDo not connect unused pinsDo not disconnect in flammable atmospheresMaintenance must be done with power off

Applications

• Industrial automation
• IoT and remote monitoring
• Machine control
• Data acquisition
• Sensor/actuator interfacing
• Educational and prototyping projects

Summary

IS.MDUINO.21+
is a compact, industrial-grade Arduino-based PLC with integrated Wi-Fi and BLE, offering a rich set of analog and digital I/Os, multiple communication interfaces, and robust power protection. It is ideal for automation projects requiring flexibility, wireless connectivity, and Arduino compatibility in industrial environments.