SIEMENS PLC TEST 1 QUESTIONS WITH CORRECT ANSWERS

SIEMENS PLC TEST 1 QUESTIONS WITH
CORRECT ANSWERS



What is a programmable logic controller(PLC)? - answer-An industrial grade computer
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that is capable of being programmed to perform control functions.
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Which of the following is not an advantage PLC offers over conventional relay-based
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control systems? - answer-Ability to Control High Voltage/Current Directly
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A(n) _____ architecture design allows the system to be easily connected to devices and
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programs from other manufacturers. A(n) _____ architecture makes connecting devices
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from different manufacturers more challenging - answer-open | proprietary
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Inputs and Outputs (I/O) are integrated into the PLC in either _____. - answer-fixed or
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vmodular configurations v




When I/O is modular, it slots into the _____. It connects to the backplane allowing the
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CPU to communicate with the modules. - answer-Rack or chassis
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Which of the following is a function of the Processor Module or CPU? - answer-Executes
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the stored user program from memory.
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v Sends appropriate output commands to control devices.
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v Accepts input data from sensing devices.
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Which of the following describes the function of I/O modules? - answer-Forms the
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interface between the CPU and the field devices
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Which of the following is not powered by the Power Supply? - answer-Field device
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What are the two most common types of PLC programming devices? - answer-Laptop
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and personal computers
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Which of the programming languages below is the most common (often considered
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standard) language used in PLC? - answer-Ladder logic
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What is a Rack as defined by Siemens? - answer-A device that accommodates the
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modules and connects them to each other.
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