PLC Review-Sizemore

Question 1

A ___ lets you determine how the machine actions affect the PLC inputs and how the PLC outputs affect the machine action

Accepted Answer

Power Diagram

Question 2

Stop pushbuttons are always normally _____ contacts

Accepted Answer

closed

Question 3

A _______ is a file that contains a hardware configuration and control program

Accepted Answer

project

Question 4

A _______ is used to drive a motor at speeds that vary from zero to a maximum speed using digital or analog control sign

Accepted Answer

VSD

Question 5

PLC time driven sequencing programs can be designed by using a series of _________

Accepted Answer

timer instructions

Question 6

The manual mode is useful for _________ a machine, because doing so in automatic mode would be dangerous

Accepted Answer

troubleshooting

Question 7

Boolean tags are ___ bit memory locations used to store the status of a device or instruction

Accepted Answer

1

Question 8

A PLC and ____ are connected in a point-to-point network using a single ethernet cable

Accepted Answer

PC

Question 9

The normal operating mode of machines is the _______ mode

Accepted Answer

Automatic

Question 10

The data type defines the size in _________ that a tag will use in memory

Accepted Answer

all of the above

Question 11

In a _______ sequence program , the start and stop inputs directly control the output

Accepted Answer

single-cycle

Question 12

Ethernet/IP uses the CIP protocol to produce a network suitable for use on ________

Accepted Answer

automation and control level

Question 13

When voltage is applied to input terminal Local:1I.Data.0 of a PLC, ____________

Accepted Answer

a programmed XIC instruction with the same address will close

Question 14

What are the basic operations of a PLC

Accepted Answer

all of the above

Question 15

__________ instructions alter the program scan of a PLC from its normal sequence

Accepted Answer

Program control

Question 16

A ________ is a program that can be called by another routine

Accepted Answer

subroutine

Question 17

To create a tag, the user must display the _________ and enter the tag&#x27;s parameters

Accepted Answer

new tag dialog

Question 18

_______ are software programs that allow a device to connect to a network and communicate with other devices

Accepted Answer

Drivers

Question 19

A PLC requires much ______ space than a hardwired relay panel that could do the same job

Accepted Answer

Less

Question 20

In the module tag Local :1I.Data , ______ refers to the module&#x27;s location

Accepted Answer

Local

Question 21

The __ instruction increase its accumulated by one each time the rung containing the instruction goes from false to true

Accepted Answer

CTU

Question 22

The file extension given to a Studio 500 project is _______

Accepted Answer

ACD

Question 23

The binary numbering system is a base 2 numbering systems that includes two symbols, ______

Accepted Answer

0 and 1

Question 24

CompactLogix I/O modules are intelligent devices meaning they have on-board ________

Accepted Answer

processors

Question 25

What are the two addresses used for ethernet communications

Accepted Answer

MAC and IP, Media Access Control and Internet Protocol

Question 26

_____ control is a closed loop control method that is commonly used in PLC programming

Accepted Answer

On/off

Question 27

The __________ dialog is used to name the controller and configure various aspects of its hardware

Accepted Answer

new controller

Question 28

A PC is used to download hardware configurations and programs to a ____

Accepted Answer

PLC

Question 29

A PLC uses logic to cause each sequence step to occur by turning _______ devices on or off

Accepted Answer

output

Question 30

The main routine may contain all of the program&#x27;s logic or it may contain instructions that call other routines called _

Accepted Answer

Subroutines

Question 31

_ is stored in the control project and transferred to the processor the next time the project is download to the control

Accepted Answer

Controller configuration

Question 32

A MCR zone uses ______ MCR coils

Accepted Answer

two

Question 33

In a PLC program, arranging two _____ instructions in a series is an example of an AND logic element

Accepted Answer

XIC

Question 34

Most automatic machines are designed with _ type/s of stops to meet various situations where a machine should be stopped

Accepted Answer

more than one

Question 35

Two applications of internal output instructions are ____________

Accepted Answer

program memory logic and program interlocks

Question 36

Place input/output diagrams are used to show the specific physical connections between the ___ and the PLC I/O terminals

Accepted Answer

device

Question 37

What does the halt function do?

Accepted Answer

Cause machine to stop current step and resume when energized

Question 38

The _____ instruction of a ladder logic network operates in a similar manner to a hard -wired output device

Accepted Answer

OTE

Question 39

A variable speed drive (VSD) _______ controlled by a PLC

Accepted Answer

can be

Question 40

What are the three network levels?

Accepted Answer

Enterprise, Automation and control, field device

Question 41

A tag structure contains _______

Accepted Answer

all of the above

Question 42

Two main areas of a CompactLogix processor&#x27;s memory are ________

Accepted Answer

tags, tasks

Question 43

In the ___________ program, the start and stop pushbuttons control an internal coil which starts and stops the sequences

Accepted Answer

Continuous-Cycle

Question 44

How does PLC seal-in-logic work?

Accepted Answer

use XIC instruction in parallel to a XIC instruction that energizes output

Question 45

A counter&#x27;s done (DN) bit is set whenever the accumulated value is _________ than the preset value

Accepted Answer

equal to or greater

Question 46

The first scan flag tag name is ____

Accepted Answer

S:FS

Question 47

The six basic components of _ is power supply, I/O modules, processor module, the programming device and the I/O chassis

Accepted Answer

PLCs

Question 48

All _____ must have an user-developed project to operate

Accepted Answer

PLC&#x27;s

Question 49

The 1769 -L16Er controller&#x27;s USB port is ISB 2.0 compatible and operates at ______

Accepted Answer

12Mbps

Question 50

The first scan flag is often used in applications to initialize a program to a known state on power up or the _______

Accepted Answer

controller

Question 51

Multiple safety interlocks can be used in a program by placing input instructions in _______ with each other on a rung

Accepted Answer

series

Question 52

A programmable controller&#x27;s outputs can control _______________

Accepted Answer

Both

Question 53

_______ displays networks and devices in a similar manner to windows explorer

Accepted Answer

Who Active

Question 54

Initializing a PLC program puts all the ___ in startup state and checks inputs to verify that the process can be restart

Accepted Answer

outputs

Question 55

What are two applications in which interlocks are used

Accepted Answer

Safety, Sequencing

Question 56

______ displays networks and devices in a similar manner to windows explorer

Accepted Answer

RSWHO

Question 57

The timer on delay timer instruction energizes its DN bit after its accumulated value is ________ its preset value

Accepted Answer

Equal to

Question 58

Tags are text-based names given to PLC memory locations used to ________

Accepted Answer

store information

Question 59

Retentive timer accumulates the total amount of time the instruction has been energized and _ the value when deenergized

Accepted Answer

Retains

Question 60

Input instructions having output address function as dictated by the state of the _____ output instructions

Accepted Answer

OTE

Question 61

The _____ instruction requires a separate RES instruction to reset its accumulated value

Accepted Answer

RTO

Question 62

To enter a CTUD counter instruction, both the CTU and the CTD instructions must have __________

Accepted Answer

the same instruction tag

Question 63

The ____ instruction is a program control instruction that causes the processor to run a subroutine

Accepted Answer

JSR

Question 64

On/off controllers ______ provide steady output current or voltage to regulate the process

Accepted Answer

Do not

PLC Review-Sizemore

Questions 82

PLC Review-Sizemore

Questions 82