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PLC Quiz #1 Exam Questions and Answers
100% Pass
What is a programmable logic controller (PLC)? - ANS An industrial grade computer that is
capable of being programmed to perform control functions. It is basically a digital computer
designed for use in machine control.
Identify four tasks in addition to relay switching operations that PLCs are capable of performing.
- ANS Timing, counting, calculating, and the processing of analog signals.
List six distinct advantages that PLCs offer over conventional relay-based control systems. -
ANS Reliability, flexibility, lower cost, communication capability, faster response time, easier
to trouble shoot.
Explain the difference between open and proprietary PLC architecture. - ANS Open
architecture allows the use of parts from different manufacturers, while proprietary
architecture uses most parts from the PLC manufacturer.
State two ways in which I/O is incorporated into the PLC. - ANS Fixed and Modular.
Describe how the I/O modules connect to the processor in a modular-type PLC configuration. -
ANS Divided by compartments into which separate modules can be plugged.
Explain the main function of each of the following major components of a PLC:
Processor module (CPU)
©FYNDLAY 1
PLC Quiz #1 Exam Questions and Answers
100% Pass
What is a programmable logic controller (PLC)? - ANS An industrial grade computer that is
capable of being programmed to perform control functions. It is basically a digital computer
designed for use in machine control.
Identify four tasks in addition to relay switching operations that PLCs are capable of performing.
- ANS Timing, counting, calculating, and the processing of analog signals.
List six distinct advantages that PLCs offer over conventional relay-based control systems. -
ANS Reliability, flexibility, lower cost, communication capability, faster response time, easier
to trouble shoot.
Explain the difference between open and proprietary PLC architecture. - ANS Open
architecture allows the use of parts from different manufacturers, while proprietary
architecture uses most parts from the PLC manufacturer.
State two ways in which I/O is incorporated into the PLC. - ANS Fixed and Modular.
Describe how the I/O modules connect to the processor in a modular-type PLC configuration. -
ANS Divided by compartments into which separate modules can be plugged.
Explain the main function of each of the following major components of a PLC:
Processor module (CPU)
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