SM43-J-T20 Unitronics Samba 4.3" colour touchscreen HMI and PLC with onboard I/O configurations

Why Choose the Unitronics SM43-J-T20 PLC with Integrated Touchscreen HMI?

The Unitronics SM43-J-T20 is a compact and powerful PLC with integrated colour touchscreen HMI designed for industrial automation, machine control and OEM applications. As part of the advanced Unitronics Samba series, it combines a programmable logic controller, operator interface and onboard I/O into a single platform, reducing hardware requirements, simplifying installation and lowering overall project costs.

Designed for machine builders, automation engineers and control panel manufacturers, the SM43-J-T20 delivers reliable PLC performance alongside a high-resolution 4.3-inch TFT colour touchscreen display. Its integrated architecture enables both PLC logic and HMI development within a single software environment, helping reduce engineering time while simplifying commissioning and maintenance.

Featuring 12 digital inputs, 2 analogue inputs and 8 transistor outputs, the SM43-J-T20 is ideally suited for packaging machinery, conveyor systems, pumping stations, HVAC equipment and industrial process control applications. Operating from a 24 VDC power supply, it provides a cost-effective automation solution with support for optional industrial communication modules.

Key Advantages

• Integrated PLC and colour touchscreen HMI in a single compact device.
• 4.3-inch TFT colour touchscreen display.
• 12 digital inputs and 8 transistor outputs.
• Built-in analogue input capability.
• Reduces panel space requirements and installation complexity.
• Supports optional Ethernet, RS485 and CANbus communications.
• Ideal for OEMs, machine builders and industrial automation projects.

Key Features

• Unitronics Samba PLC + HMI platform.
• 4.3-inch TFT full-colour touchscreen display.
• 480 × 272 pixel resolution.
• 12 digital inputs including high-speed counter functionality.
• 2 analogue inputs.
• 8 transistor outputs.
• USB programming and communication port.
• Integrated real-time clock.
• MODBUS communication support.
• Programming via Unitronics VisiLogic software.

Technical Specifications

• Manufacturer: Unitronics
• Series: Samba PLC + HMI
• Model: SM43-J-T20
• Product type: PLC with integrated touchscreen HMI
• Supply voltage: 24 VDC
• Operating voltage range: 20.4 to 28.8 VDC
• Display size: 4.3-inch TFT colour touchscreen
• Display resolution: 480 × 272 pixels
• Digital inputs: 12
• Analogue inputs: 2 configurable inputs
• Digital outputs: 8 transistor outputs
• Output type: PNP transistor
• Communication: USB, optional Ethernet, RS232/RS485 and CANbus
• Protection rating: IP66 / NEMA 4X front panel
• Operating temperature: 0°C to 50°C
• Dimensions (H × W × D): 136 × 105.1 × 61.3 mm
• Weight: Approx. 360 g

Efficient Machine Control and Operator Interaction

The SM43-J-T20 combines PLC functionality and touchscreen operator control within a single automation platform. This integrated design reduces hardware costs while providing operators with real-time access to machine status, alarms, production data and process parameters.

Using Unitronics VisiLogic software, engineers can create both PLC applications and HMI screens within a unified development environment. Advanced functionality includes data logging, PID control, alarm management, recipe handling and communication with external devices, making the controller suitable for a wide range of industrial applications.

Typical Applications

• Packaging and assembly machinery.
• Material handling and conveyor systems.
• HVAC and building automation.
• Pumps and water treatment equipment.
• Food and beverage production machinery.
• Industrial process monitoring and control.
• OEM machine automation projects.

Trusted by Automation Engineers Worldwide

Unitronics Samba controllers are widely used by machine builders and automation professionals seeking reliable PLC control, integrated touchscreen operation and flexible communications within a compact industrial platform.