plc

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Less noisy

One of the following is not the disadvantage of electromechanical relays.

Programable Peripheral Interface

PPI is an acronym for.

External processing Unit

A PLC contains all of the following components except.

analog

a thermocouple input to a PLC is considered as ______ I/O

Transformer

The input module has all the following components except.

Address decoder unit.

The _______ ensures that only one device is communicating with the microprocessor at any given moment.

Data Communication (DCE)

The _______ respond to the messages transmitted by the data terminal equipment (DTE)

Data Terminal Equipment (DTE)

The ________ initiates communication by sending messages

least significant bit (LSB)

the binary digit to the far right hand side of the number is called the _____

quotient

the number of times the diviser can be subtracted from the dividend is called the____

Parity check

A _______ check is used to find transmission errors.

1111001011101001

convert hexadecimal F2E9 to binary

Central processing unit

CPU is an acronym for

False

CPU of a plc is the heart of the system

A Process control computer.

A PLC is most appropriately defined as.

Address decoder

A microprocessor unit uses a _____ to enable ROM RAM i/o port devices and support chips.

Exit Status

One of the following is not a section of system memory

Location status

One of the following is not a section of system memory (2)

Requires major wiring

One of the following is not the benefit of PLCs over electromechanical relay logic systems.

Internal Flip Flop

SRAM uses a ______ to hold a data bit

Full and half duplex

Two types of DF1 communications are ___________ and _______.

Ultraviolet Erasable Programable ROM

UVEPROM is an acronym for?

Electrically erasable programable ROM

EEPROM is the acronym for?

two way

Full duplex DF1 allows for ______ communications between two devices.

255

Half duplex DF1 allows for communications in one direction at a time in a network of up to _____ devices.

fractional

Which type of number has weights that are negative powers of ten (10 )

Sinking

a sourcing output device must be connected to a _______ output module port.

expandability

environmental consideration during the selection of a PLC include all of the following except

Fixed PLC

for the ______, the processor, power supply, I/O modules are all in one housing

modular PLC

for the _______, the housing consists of a power supply in chassis with several slots

grey code

in the ____ system only one digit changes state

binary decoded decimal

in the _____ system each 4 bits of binary

Robotics and configurations

one of the following factors is the least important consideration when selecting a PLC

false

compatibility is not a big issue when selecting anew PLC

2F7F

convert binary 001011110111 1111 to hexadecimal

517

convert binary number 10100111 to octal number

10000010

convert hexadecimal 82 to binary

22.3125

convert the fractional binary number 10110.0101 to decimal

23.46875

convert the fractional binary number 10111.01111 to decimal

10111101

subtract binary number 110011 from 11110000

output port 0 in the PLC module 2

the instruction with address O:2/0 represents the PLC output port ____ in the PLC module ____.

11111

what is the binary representation of 31

11

what is the binary representation of 39?

110100

what is the binary representation of 52?

real

which type of number has weights that are both positive and negative powers of ten (10)

integer

which type of number has weights that are positive powers of ten (10)

false

while selecting a PLC, it has nothing to do with the city's electrical code because all PLCs use ladder logic programming technique

false

The input module converts 5 volt dc into 120 volt ac

Electrical noise

The inputs and outputs of PLC protects CPU from one of the following.

input port 2 in the PLC module 1

The instruction with address I:1/2 represents the PLC input port ______ in the PLC module ______.

Baud rate

The unit of transmission for measuring the speed of communication is_______

Small Logix Controller

In a plc the SLC is an acronym for?

ASCII

barcode readers send _____ input signals

Sourcing

A sinking input device must be connected to a ______ input module port.

False

A washing machine is so simple electromechanical unit that it cannot be controlled by a PLC

capacitance

All of the following are physical selection criteria of a PLC except

Start Switch

All of the following items in the list are components of a plc except...

Digital to analog converter (DAC)

An ____ converts the digital output signals back to analog signals.

Optoislator

An____ ____ is used to input the DC signal to the CPU board

Zener diod

An_____ diod is a simi conductor device that can maintain a steady voltage level.

Flip Flop

An______ is a sequential Digital device that generates a different output for every input on the next clock pulse.

RISC based

An______ microprocessor typically uses only one instruction for a complex command.

CISC based

An______ microprocessor uses several math instructions to carry out complex commands.

Basic input output system

BIOS is an acronym for?

DAC (Digital to Analog Converter)

Digital, or variable, output modules use ______ ICs to convert digital data supplied by the PLC processor to scalable voltage or current output.

true

PLC's low voltage line should be a concern during its selection

Cache

The MPU uses _____ memory to speed up the data transfer while it is executing a program.

Rectifier

The component which converts ac to dc in the plc is called?

Modular Digital Controller

The first PLC introduced by Dick Morley was named

Firmware

The software that resides in ROM is called.

Remotely controlled

There are three types of PLC programming modules. One of the following is not among them:

100101100

multiply binary numbers 1100 and 11001

Octal

the _____ number system with a base of 8

msb most significant bit

the binary digit to the far left hand side of the number is called the

Ladder Logic Program

the user memory segment holds the ______ whereas the system memory segment stores memory information needed to execute the user program.

hexadecimal

the___ number system is used to display plc memory


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