Support-focused enterprise controls: trigger-first design strategy

A trigger-first design strategy means control system designers must develop movement detection and ancillary trigger circuits as the foundation for all controller applications. This means designers group, assign, and isolate trigger circuits for each control point or station. Trigger circuit isolation makes it easy for support personnel, controls integrators, and future programmers to access, understand, and change logic circuits. Isolation and subsequent recognition will provide the foundational basis for developing most latch/unlatch circuit signals for control applications. This trigger-first strategy eliminates the need for different designers to develop redundant and possibly less reliable instruction-based triggers for the same sets of movement and ancillary events. Redundant triggers are a result of control and information system designers unnecessarily adding sensors and/or triggers to a control system design. The elimination of redundant circuits happens when manufacturers en
http://www.controleng.com/single-article/support-focused-enterprise-controls-trigger-first-design-strategy/dbb932b013d6b2f12f418520a0076f6a.html

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