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PLC test 1 questions with complete solutions

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PLC test 1 questions with complete solutions

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PLC test 1 questions with complete solutions


What does PLC stand for? - answer-Programmable logic control
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PLCs were originally designed as replacements for - answer-Hardwired relays
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Name the main components that are found In a basic CLX system - answer-Power
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supply, CPU,Input/output module
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What happens to the memory of a CLX controller when the power is shut off - answer-
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Memory loss c




How is a power supply chosen for a system - answer-An assessment is done to
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determine what works best for the particular system
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What is an input? - answer-Receiving a command or signal
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What is an output? - answer-A place where power or information leaves a system
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What does discrete I/O mean - answer-Either on or off, Input/Output
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What is an RTB - answer-Removable terminal block, remote terminal block
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What is the difference between discrete and analog - answer-Discrete is either on or off.
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Analog can any value, say from 0 to 100, all values are possible between 0 to 100.
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What does producer/consumer technology enable CLX to do? -
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answer-Producer/consumer technology enables CLX controller controller for data
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sharing between multiple CLX controllers
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What does a contact typically represent - answer-Input
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What does a coil typically represent - answer-Output
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What is the common PLC programming language - answer-Ladder logic
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What is the IEC 61131-3? - answer-Standard for PLC
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What four languages can be used to program CLX controllers - answer-Ladder,
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Structured text, function block, instruction list
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