Basic principles of conventional industrial automation. Applications of relays and digital controllers in energy and industrial plants. Sensors of digital signals (buttons, contacts, photocells, limit switches, thermal relays, undervoltage relays) and transducers of analog signals (voltage, current, power, flow, pressure).Programmable logic controllers (PLC) and supervisory control and data acquisition (SCADA) systems. Industrial communication protocols (Industrial Ethernet, Profibus, Modbus, Instabus). PLC programming languages (Statement List-STL, Ladder Logic-LAD, Function Block Diagram-FBD). PLC applications (electric networks, motor control, level and flow control, conveyor belts). Laboratory exercises with realistic systems.