PLC EXAM 2025 QUESTIONS AND
ANSWERS LATEST UPDATE 2025
RATED A+ FOR SUCCESS.
, What are the major parts of a plc? - ANSWERThe CPU, I/O, power supply, and
programming device
Architecture - ANSWERRefers to PLC hardware or software
Open architecture - ANSWERAllows the system to be connected easily to devices and
programs made by other manufacturers
Closed architecture - ANSWERA system whose design is proprietary making it difficult
to connect to other systems
Fixed I/O - ANSWERSmall PLC that comes in one package with not separate
removable units. The processor and I/O are packaged together
Modular I/O - ANSWERA PLC that is divided by compartments into which separate
modules can be plugged
Power supply - ANSWERProvides DC power to all modules that plug into the rack
CPU or processor - ANSWERA microprocessor for implementing the logic and
controlling the communications among the modules
PLC scan cycle - ANSWERReads inputs -> executes program -> diagnostics &
communication -> updates outputs
I/O (Input/Output) system - ANSWERForms the interface by which field devices are
connected to the controller.
I/O (Input/Output) system - ANSWERForms the interface by which field devices are
connected to the controller
Programming device - ANSWERUsed to enter the desired program into the memory of
the processor
Personal computer (PC) - ANSWERThe most commonly used programming device
Program - ANSWERA series of instructions that directs the PLC to execute actions
Relay ladder logic - ANSWERThe standard programming language, is based on
electromagnetic relay control
ANSWERS LATEST UPDATE 2025
RATED A+ FOR SUCCESS.
, What are the major parts of a plc? - ANSWERThe CPU, I/O, power supply, and
programming device
Architecture - ANSWERRefers to PLC hardware or software
Open architecture - ANSWERAllows the system to be connected easily to devices and
programs made by other manufacturers
Closed architecture - ANSWERA system whose design is proprietary making it difficult
to connect to other systems
Fixed I/O - ANSWERSmall PLC that comes in one package with not separate
removable units. The processor and I/O are packaged together
Modular I/O - ANSWERA PLC that is divided by compartments into which separate
modules can be plugged
Power supply - ANSWERProvides DC power to all modules that plug into the rack
CPU or processor - ANSWERA microprocessor for implementing the logic and
controlling the communications among the modules
PLC scan cycle - ANSWERReads inputs -> executes program -> diagnostics &
communication -> updates outputs
I/O (Input/Output) system - ANSWERForms the interface by which field devices are
connected to the controller.
I/O (Input/Output) system - ANSWERForms the interface by which field devices are
connected to the controller
Programming device - ANSWERUsed to enter the desired program into the memory of
the processor
Personal computer (PC) - ANSWERThe most commonly used programming device
Program - ANSWERA series of instructions that directs the PLC to execute actions
Relay ladder logic - ANSWERThe standard programming language, is based on
electromagnetic relay control
