What is the difference between a plc and an ecu?

A PLC (Programmable Logic Controller) is primarily used for industrial automation and control processes, managing machinery and equipment in manufacturing environments. An ECU (Electronic Control Unit), on the other hand, is typically found in automotive applications, managing various functions within a vehicle, such as engine control, transmission, and safety systems. While both are types of programmable devices, PLCs focus on industrial applications, while ECUs are specialized for automotive systems.