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| Joule (J) |
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1. A unit of energy equal to the work done when a force of one newton acts through a distance
of one metre. One joule is equivalent to one watt second or 0.737 foot pounds.
2. A unit of electrical energy equal to the work done when a current of one ampere is passed
through a resistance of one ohm for one second.
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| Joystick |
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Stick or handle type input device mounted on the operator's console. Some joysticks have buttons mounted on the handle. Moving the joystick handle can send either discrete or analog input signals to the PLC.
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