Article

Selecting an operator interface for a PLC

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Abstract

Programmable logic controller (PLC) users must have better `windows' into their production lines and processes to remain competitive. Text- and graphical-based operator interfaces (OIs) allow more information to be placed in front of an operator at one time. The displays can be formatted to show data in such a manner that the operator can comprehend the status of the production line or process, make the necessary corrections, and see the results of these decisions in `real time'. Some important factors for users to consider in selecting OIs in PLC-based applications are discussed.

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