ISA IEC 62443 Lead Implementer Practice Questions - PECB Certified ISA IEC 62443 Lead Implementer Exam

What is the primary function of a programmable logic controller (PLC) in an IACS?

Providing long-term archival storage of process history for compliance reporting Executing control logic in real time to read inputs and drive outputs for a machine or process Rendering graphical operator displays for the control room Managing corporate email and office productivity services

Correct Answer:

Executing control logic in real time to read inputs and drive outputs for a machine or process

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