What’s the difference between PLC, HMI, and SCADA?

• PLC (Programmable Logic Controller): Controls machinery or processes by executing logic-based automation.

• HMI (Human-Machine Interface): A screen or panel that allows operators to monitor and interact with the PLC system.

• SCADA (Supervisory Control and Data Acquisition): A broader system that provides real-time data acquisition, monitoring, and remote control over multiple processes or sites.

All three work together to deliver automated, visible, and manageable industrial operations.