SM70-J-R20 Unitronics Samba 7" colour touchscreen HMI and PLC with onboard I/O configurations

Why Choose the Unitronics SM70-J-R20 PLC with Touchscreen HMI?

The Unitronics SM70-J-R20 is a powerful PLC with integrated colour touchscreen HMI from the Unitronics Samba series, designed for advanced machine automation and industrial control applications. The controller combines programmable logic control, operator interface and onboard I/O within a single compact device, helping engineers reduce panel complexity and simplify wiring.

The unit features a 7-inch high-resolution colour TFT touchscreen that provides clear process visualisation and intuitive control of automation systems. Integrated digital and analogue inputs together with relay outputs allow direct connection to sensors, switches and actuators without requiring external expansion modules.

Powered by a 24 V DC supply, the SM70-J-R20 supports ladder logic programming and graphical HMI design within the Unitronics Visilogic environment, providing a complete platform for PLC logic, operator interface design and communication configuration.

Key Advantages

• PLC and 7″ colour touchscreen HMI integrated in a single controller.
• Large 7″ TFT display for improved visualisation of machine processes.
• Integrated digital and analogue inputs for direct sensor connectivity.
• Relay outputs for switching industrial loads and actuators.
• Supports multiple industrial communication protocols including Modbus.
• Compact all-in-one architecture reduces control panel components.

Key Features

• Samba series PLC with built-in colour touchscreen HMI.
• 7″ TFT LCD colour display with resistive touchscreen interface.
• 10 digital inputs including high-speed counter capability.
• 2 analogue / digital inputs configurable for 0–10 V or 4–20 mA signals.
• 8 relay outputs for switching industrial loads.
• Mini-USB programming interface.
• Optional communication modules including Ethernet, RS-485 and CANbus.
• Integrated alarm screens, trends, recipe management and data logging.

Technical Specifications

• Manufacturer: Unitronics
• Series: Samba PLC + HMI
• Model: SM70-J-R20
• Display: 7″ colour TFT touchscreen
• Resolution: approx. 800 × 480 pixels
• Power supply: 24 V DC (20.4–28.8 V operating range)
• Digital inputs: 10 inputs including high-speed counter / encoder input
• Analogue inputs: 2 configurable inputs
• Digital outputs: 8 relay outputs
• Relay rating: up to 3 A per output
• Communication: RS-232 and USB programming interface with optional Ethernet, RS-485 and CANbus modules
• Application memory: approx. 192 kB logic memory
• Operating temperature: 0 °C to 50 °C
• Protection rating: IP65 / IP66 / NEMA 4X front panel when panel mounted

Integrated PLC and HMI Automation Platform

The Unitronics Samba controller family integrates PLC functionality and HMI visualisation into a single device. This architecture reduces component count and enables efficient machine automation while providing advanced features such as alarms, trending graphs, data tables and remote communication utilities.

Typical Applications

• OEM machine automation systems.
• Packaging and assembly machinery.
• HVAC and pump control systems.
• Conveyor and material handling equipment.
• Industrial process monitoring and control.

Trusted by Automation Engineers

Unitronics Samba PLC controllers are widely used by machine builders and system integrators for compact automation solutions with integrated touchscreen interfaces.