PLC: lesson 4 Study Guide
Push buttons, selector switches, limit switches, and proximity switches are common input
devices. - Answer True
The number and type of
I/O's cannot be changed in a fixed PLC. - Answer True
EEPROM is used in PLCs to provide power failure backup for the RAM memory. - Answer True
A byte is a chip inside a CPU that stores data at specific addresses. - Answer False
Housekeeping an overhead is a section of the operating cycle during which a PLC performs
memory management and updates timers and counters. - Answer True
All PLCs have ___ common sections regardless of the manufacturer, model, or size. - Answer
5
Integrated programming devices are typically found on ___-PLCs. - Answer Nano
PCs are used as programming devices on ___ PLCs. - Answer All sizes of
CPUs are rated according to program ____. - Answer Memory size and scan time
___ are the most common programming devices used with PLCs. - Answer Personal
computers (PCs)
Input and output devices may not operate on the same voltage as the ____ of a PLC system
operates. - Answer CPU
A ____ typically operates at a voltage and current that are isolated from the operating voltage
of a PLC CPU. - Answer Output component
The ___ is the section of the PLC that houses the processor of the PLC. - Answer CPU
There is/are ___ types of form factors used with PLCs. - Answer 2
Push buttons, selector switches, limit switches, and proximity switches are common input
devices. - Answer True
The number and type of
I/O's cannot be changed in a fixed PLC. - Answer True
EEPROM is used in PLCs to provide power failure backup for the RAM memory. - Answer True
A byte is a chip inside a CPU that stores data at specific addresses. - Answer False
Housekeeping an overhead is a section of the operating cycle during which a PLC performs
memory management and updates timers and counters. - Answer True
All PLCs have ___ common sections regardless of the manufacturer, model, or size. - Answer
5
Integrated programming devices are typically found on ___-PLCs. - Answer Nano
PCs are used as programming devices on ___ PLCs. - Answer All sizes of
CPUs are rated according to program ____. - Answer Memory size and scan time
___ are the most common programming devices used with PLCs. - Answer Personal
computers (PCs)
Input and output devices may not operate on the same voltage as the ____ of a PLC system
operates. - Answer CPU
A ____ typically operates at a voltage and current that are isolated from the operating voltage
of a PLC CPU. - Answer Output component
The ___ is the section of the PLC that houses the processor of the PLC. - Answer CPU
There is/are ___ types of form factors used with PLCs. - Answer 2
