PLC 4 Questions With All Correct & Verified
Answers
integrated programing devices are typically found on nano- and pico-sized PLCs Correct answer-
true
personal computers are the most common programming device used with PLCs Correct answer-
true
input devices typically operate at lower voltages then the voltage used by the CPU of a PLC Correct
answer-false
output components typically operate at a voltage that is lower then the operating voltage of a PLC
CPU Correct answer-false
PCs are used as programming devices on all sizes of PLCs Correct answer-true
the two types of form factors used with PLCs are fixed and modular Correct answer-true
housekeeping and overhead is the section of the operating cycle during which the PLC performs
memory management and updates timers and counters Correct answer-true
all PLCs have three common sections regardless of the manufacturers, model, or size Correct
answer-false
pushbuttons , selector switches , limit switches and proximity switches ae common input devices
Correct answer-true
the standard unit of memory for a PLC is the byte Correct answer-false
PLC components are not typically interchangeable between manufacturers Correct answer-true
EEPROM is used in PLCs to provide power failure backup for the RAM memory Correct answer-true
CPUs are rated according to the size of the program memory and scan time Correct answer-true
the number and type of I/Os cannot be changed in a fixed PLC Correct answer-true
PLCs are now cost effective alternative for an application that requires a control relay and a timer
Correct answer-false
a device with a keypad that is used to write and enter a user developed control program to into a PLC
Correct answer-programming device
the length of time a PLC can tolerate a power loss without affecting operation Correct answer-hold
a time
separate keypad device that is not an intergral part of a PLC Correct answer-hand held programs
Answers
integrated programing devices are typically found on nano- and pico-sized PLCs Correct answer-
true
personal computers are the most common programming device used with PLCs Correct answer-
true
input devices typically operate at lower voltages then the voltage used by the CPU of a PLC Correct
answer-false
output components typically operate at a voltage that is lower then the operating voltage of a PLC
CPU Correct answer-false
PCs are used as programming devices on all sizes of PLCs Correct answer-true
the two types of form factors used with PLCs are fixed and modular Correct answer-true
housekeeping and overhead is the section of the operating cycle during which the PLC performs
memory management and updates timers and counters Correct answer-true
all PLCs have three common sections regardless of the manufacturers, model, or size Correct
answer-false
pushbuttons , selector switches , limit switches and proximity switches ae common input devices
Correct answer-true
the standard unit of memory for a PLC is the byte Correct answer-false
PLC components are not typically interchangeable between manufacturers Correct answer-true
EEPROM is used in PLCs to provide power failure backup for the RAM memory Correct answer-true
CPUs are rated according to the size of the program memory and scan time Correct answer-true
the number and type of I/Os cannot be changed in a fixed PLC Correct answer-true
PLCs are now cost effective alternative for an application that requires a control relay and a timer
Correct answer-false
a device with a keypad that is used to write and enter a user developed control program to into a PLC
Correct answer-programming device
the length of time a PLC can tolerate a power loss without affecting operation Correct answer-hold
a time
separate keypad device that is not an intergral part of a PLC Correct answer-hand held programs
