Support-focused enterprise controls: command control

Each group of logic circuits enables a command signal. Designers use the enabled command signals to turn on output signals. Enabled output signals activate external circuits that cause objects and mechanisms to move. A control circuit comprises one or more logic circuits that work together to enable, disable, and/or re-enable an output signal. Regardless of the output signal, most groups of control circuits provide similar control characteristics. Recognizing and understanding the inherent and differing characteristics of these circuits is important. One key characteristic revolves around how applied control circuits start movement. The next obvious characteristic is how control circuits stop something from moving when an object or mechanism reaches its expected end or stop position. A less evident characteristic centers on how control circuits prematurely stop something after it is moving. This characteristic is important when other stationary objects or mechanisms inadvertently chan


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