PLC Exam 2025 Actual exam (Testing Real Exam Questions)and
PLC Exam
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1. What are the major parts The CPU, I/O, power supply, and programming device
of a plc?
2. Architecture Refers to PLC hardware or software
3. Open architecture Allows the system to be connected easily to devices and programs
made by other manufacturers
4. Closed architecture A system whose design is proprietary making it difficult to connect to
other systems
5. Fixed I/O Small PLC that comes in one package with not separate removable
units. The processor and I/O are packaged together
6. Modular I/O A PLC that is divided by compartments into which separate modules
can be plugged
7. Power supply Provides DC power to all modules that plug into the rack
8. CPU or processor A microprocessor for implementing the logic and controlling the com-
munications among the modules
9. PLC scan cycle Reads inputs -> executes program -> diagnostics & communication ->
updates outputs
10. I/O (Input/Output) sys- Forms the interface by which field devices are connected to the con-
tem troller.
11. I/O (Input/Output) sys- Forms the interface by which field devices are connected to the con-
tem troller
12. Programming device Used to enter the desired program into the memory of the processor
13. Personal computer (PC) The most commonly used programming device
, PLC Exam
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14. Program A series of instructions that directs the PLC to execute actions
15. Relay ladder logic The standard programming language, is based on electromagnetic
relay control
16. Address Where an input or output device is conncected
17. PC vs PLC PLC is designed to operate in the industrial environment with wide
ranges of ambient temperature and humidity
18. Human machine inter- Software that allows the user to monitor and control the process
face (HMI)
19. Programmable Automa- Combine PLC ruggedness with PC
tion Controllers (PACs) functionality
20. Nano Smallest size with less than 15 I/O
21. Micro 15-128 I/O
22. Medium 128-512 I/O
23. Large Over 512 I/O
24. Single ended application One PLC controlling one process
25. Multitask application One PLC controlling several processes
26. Control management One PLC controlling several others
application
27. Memory Part of a PLC controller that stores data, instructions, and the control
program
28. Memory size Expressed in K values
, PLC Exam
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29. 1K = 1024
30. Amount of memory re- • Number of I/O points
quired depends on used
• Size of control
program
• Data-collecting
requirements
• Supervisory functions
required
• Future expansion
31. Input interface modules accept signals from the
machine or process devices and convert them into
signals that can be used by the controller
32. Output interface mod- convert controller signals
ules into external signals used to control the machine or
process
33. chassis hardware assembly that houses I/O modules,
processor modules, and power supplies
34. logical rack an addressable unit consisting of 128
input points and 128 output points
35. remote rack A rack that is located away from the processor module
36. address a label or number that indicates where
a certain piece of information is located in a PLC's
memory
37. Rack/slot-based ad- used with
dressing schemes Allen-Bradley PLC-5 and SLC 500 controllers
PLC Exam
verifiedStudy
Answers ( 100% accurate) GET IT RIGHT!!
online at https://quizlet.com/_2nbiix
1. What are the major parts The CPU, I/O, power supply, and programming device
of a plc?
2. Architecture Refers to PLC hardware or software
3. Open architecture Allows the system to be connected easily to devices and programs
made by other manufacturers
4. Closed architecture A system whose design is proprietary making it difficult to connect to
other systems
5. Fixed I/O Small PLC that comes in one package with not separate removable
units. The processor and I/O are packaged together
6. Modular I/O A PLC that is divided by compartments into which separate modules
can be plugged
7. Power supply Provides DC power to all modules that plug into the rack
8. CPU or processor A microprocessor for implementing the logic and controlling the com-
munications among the modules
9. PLC scan cycle Reads inputs -> executes program -> diagnostics & communication ->
updates outputs
10. I/O (Input/Output) sys- Forms the interface by which field devices are connected to the con-
tem troller.
11. I/O (Input/Output) sys- Forms the interface by which field devices are connected to the con-
tem troller
12. Programming device Used to enter the desired program into the memory of the processor
13. Personal computer (PC) The most commonly used programming device
, PLC Exam
Study online at https://quizlet.com/_2nbiix
14. Program A series of instructions that directs the PLC to execute actions
15. Relay ladder logic The standard programming language, is based on electromagnetic
relay control
16. Address Where an input or output device is conncected
17. PC vs PLC PLC is designed to operate in the industrial environment with wide
ranges of ambient temperature and humidity
18. Human machine inter- Software that allows the user to monitor and control the process
face (HMI)
19. Programmable Automa- Combine PLC ruggedness with PC
tion Controllers (PACs) functionality
20. Nano Smallest size with less than 15 I/O
21. Micro 15-128 I/O
22. Medium 128-512 I/O
23. Large Over 512 I/O
24. Single ended application One PLC controlling one process
25. Multitask application One PLC controlling several processes
26. Control management One PLC controlling several others
application
27. Memory Part of a PLC controller that stores data, instructions, and the control
program
28. Memory size Expressed in K values
, PLC Exam
Study online at https://quizlet.com/_2nbiix
29. 1K = 1024
30. Amount of memory re- • Number of I/O points
quired depends on used
• Size of control
program
• Data-collecting
requirements
• Supervisory functions
required
• Future expansion
31. Input interface modules accept signals from the
machine or process devices and convert them into
signals that can be used by the controller
32. Output interface mod- convert controller signals
ules into external signals used to control the machine or
process
33. chassis hardware assembly that houses I/O modules,
processor modules, and power supplies
34. logical rack an addressable unit consisting of 128
input points and 128 output points
35. remote rack A rack that is located away from the processor module
36. address a label or number that indicates where
a certain piece of information is located in a PLC's
memory
37. Rack/slot-based ad- used with
dressing schemes Allen-Bradley PLC-5 and SLC 500 controllers
