(Operator Interface) A low-level graphical interface to a specialized computer (DCS, PLC or PAC) on the plant floor. Typically built into a ruggedized terminal for shop floor use, it provides a remote interface to the push buttons, switches and gauges found on the equipment itself. An OI does not offer the rich graphics and flexibility of a Windows-based interface. Contrast with HMI.
In the Plant
This operator interface is mounted right into the wall of a packaging plant. Although colorful, it does not have the rich graphics of a human machine interface (HMI). (Image courtesy of Opto 22, www.opto22.com)
In the Plant
This operator interface is mounted right into the wall of a packaging plant. Although colorful, it does not have the rich graphics of a human machine interface (HMI). (Image courtesy of Opto 22, www.opto22.com)
 | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2008 The Computer Language Company Inc. All rights reserved. |
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