Where is the input and output instructions located on a plc?

In a Programmable Logic Controller (PLC), input and output instructions are typically located in the programming software used to create the control logic, such as ladder logic or structured text. The input instructions correspond to the physical input devices connected to the PLC, like sensors and switches, while output instructions relate to devices like actuators and motors. The PLC's I/O modules facilitate the connection between the physical devices and the PLC's CPU, allowing the programmed logic to control the inputs and outputs effectively.