Human-Machine Interface

Q1. What is an HMI?

An HMI (Human-Machine Interface) is a user-friendly system that allows a human to interact with a machine, computer, or automated system by providing a visual and interactive display. HMIs typically feature touchscreens or other input devices to show real-time data, monitor performance, and control processes in various settings, especially industrial automation, to improve efficiency and safety.

Q2. Where are HMIs used?

HMI are commonly used in manufacturing plants, automation systems, packaging machines, energy management, water treatment plants, and building automation.

Q3. Can an HMI be customized?

Yes. HMI can be programmed with custom screens, graphics, alarms, recipes, and multi-language support depending on the application.

Q4. What are the types of HMI?

Basic HMI – Simple text or keypad-based displays.
Graphical HMI – Touchscreen with graphical user interface.
Advanced/SCADA-based HMI – Integrated with control and monitoring systems.

Q5. What is the difference between HMI and MMI?

Both mean Human-Machine Interface (HMI) or Man-Machine Interface (MMI). Today, HMI is the standard term used.

Q6. Can servo motors be connected to PLCs or controllers?

Yes. Servo motors can be easily integrated with PLCs, CNC controllers, HMIs, and motion controllers via communication protocols like EtherCAT, Modbus, CANopen, or Ethernet/IP.