What role does the 'E-stop' play in a PLC system?

The 'E-stop', or emergency stop, plays a critical role in maintaining safety within a programmable logic controller (PLC) system. This function is primarily designed to remove power from selected outputs, effectively shutting down the machinery or process quickly to prevent harm or damage in emergency situations.

When the E-stop is activated, it interrupts the normal operation of the system by cutting off power to specific outputs that control machinery functions, thereby halting any potentially hazardous conditions. This ensures that operators and equipment are safeguarded from accidents or malfunctions. The E-stop is governed by strict safety standards and is a fundamental component in industrial automation for promoting worker safety and mitigating risks associated with equipment operation.