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WorksheetsLogo! Soft
Total questions: 100
Worksheet time: 50mins
What is the part of the PLC called where inputs and outputs are connected?
Memory
Input/output interface
Processor
Power supply
Where does PLC stores its program?
Input device
Power supply
Programming device
Memory
Which of the following is a PLC input device?
Fan
Motor
Sensor
Light
Which of the following is NOT part of a basic PLC system?
Relay box
Power supply
Memory
CPU
Which of the following is an output device?
Keypad
Distance sensor
Sound sensor
Motor
A PLC is a computer used for industrial automation.
True
False
None of the above
Which of the following is the application of PLC?
Wending machines
Automatic door
Cereal filling systems
All of the above
Which of the following is an example of discrete (digital) control?
Turning a lamp ON or OFF
Varying the brightness of a lamp
Varying the volume of a music system
Controlling the speed of a fan
What are solenoids, lamps, and motors connected to?
Analog input
Analog output
Digital input
Digital output
Gear Box is used to decrease the speed and increase the torque.
True
False
None of the above
Select the sequence of label from the below option.
1.programming port 2.output port 3.Input port
1.programming port 2.Input port 3.output port
1.output port. 2.programming port 3.Input port
What is the job of the CPU?
Forms the interface between input field devices to the controller.
Store and run the PLC software program.
To provide DC power to the PLC.
Forms the interface between output field devices to the controller.
Specify the inputs used in the wiring diagram of the PLC module given below
N.O. pushbutton 1, N.O pushbutton 2 & 3 wired ultrasonic sensor
N.O. pushbutton 1, N.O pushbutton 2
Lamp and buzzer
3 wired ultrasonic sensor
Specify the outputs used in the wiring diagram of the PLC module given below
N.O. pushbutton 1, N.O pushbutton 2 & 3 wired ultrasonic sensor
N.O. pushbutton 1, N.O pushbutton 2
Lamp and Buzzer
3 wired ultrasonic sensor
What is name of the PLC part labeled '2'
Output
Power Supply
Inputs
Module Slot
What is name of the PLC part labeled '3'
Output
Power Supply
Inputs
Module Slot
What is name of the PLC part labeled '1'
Output
Power Supply
Inputs
Module Slot
Few applications of PLC are
Automatic door
Cereal filling systems
Wending machines
All of the above
Which function block of the LOGO! corresponds to the special function "ON DELAY":
Which function block of the LOGO! corresponds to the special function "OFF DELAY":
Which function block of the LOGO! corresponds to the special function "ON/OFF DELAY":
Which function block of the LOGO! corresponds to the special function "RETENTATIVE ON DELAY":
Which function block of the LOGO! corresponds to the special function "HOURS COUNTER":
Which function block of the LOGO! corresponds to the special function "LATCHING RELAY":
Which function block of the LOGO! corresponds to the special function "ASYNCHRONOUS PULSE GENERATOR":
Which function block of the LOGO! corresponds to the special function "UP/DOWN COUNTER":
Which function block of the LOGO! corresponds to the special function "YEARLY TIMER":
Which function block of the LOGO! corresponds to the special function "WEEKLY TIMER":
Which function block of the LOGO! corresponds to the special function "ASTRONOMICAL CLOCK":
Supply voltage for LOGO230! may be
230V…115V
230V...120V
240V...115V
240V...115V
How can you program LOGO!
Directly from the module keyboard
From a computer equipped with LOGO! Soft Comfort
Installing a programmed memory module
A, B, C are correct
Using a remote workstation
Maximum load per output of LOGO! at voltage = 24V
0.1A
30mA
0.3A
50mA
10A
What does the LOGO! 24Ro
Module power supply =24V, output in the form of closing relay contacts, without keyboard and display
Module power supply =12V, output in the form of closing relay contacts, with keypad and display
Module power supply =24V, with keypad and display
Module power supply =12V, output in the form of closing relay contacts, without keyboard and display
Power supply of the module =24V, output in the form of closing relay contacts
What logic modules are included in the LOGO! family?
LOGO!Basic, LOGO!Pure, LOGO!Long, LOGO!Bus
LOGO!Basic, LOGO!Pure, LOGO!Power, LOGO!Bus
LOGO!Basic, LOGO!Pure, LOGO!Power, LOGO!Contact
LOGO!Power, LOGO!Pure, LOGO!Bus
LOGO!Contact, LOGO!Pure, LOGO!Long, LOGO!Bus
What does the DM marking mean?
Module for input-output of discrete signals
Analog module
Communication module
Module with NO outputs
Built-in weekly timer
What does the letter C mean in the markings of LOGO! modules?
Module equipped with built-in AS-i - interface
Long version module (12 digital inputs/8 digital outputs)
Module with built-in real time clock
Module with outputs in the form of normally open relay contacts
Module supply voltage
What does the letter L mean in the markings of LOGO! modules?
Module equipped with built-in AS-i - interface
Long version module (12 digital inputs/8 digital outputs)
Module with built-in real time clock
Module with outputs in the form of normally open relay contacts
Module supply voltage
What does the number 11 mean in the markings of LOGO! modules?
Module equipped with built-in AS-i interface
Long version module (12 digital inputs/8 digital outputs)
Module with built-in real time clock
Module with outputs in the form of normally open relay contacts
Module supply voltage
How many digital inputs and digital outputs are there in LOGO!Basic?
12 digital inputs 8 digital outputs
4 digital inputs 6 digital outputs
16 digital inputs 8 digital outputs
8 digital inputs 4 digital outputs
8 digital inputs 12 digital outputs
Which of the following languages is a high-level graphical language?
in C++
assembler
Pascal
SFC
Delphi
Which element is represented by the letter I in the LOGO!Soft_Comfort program?
Exit
Discrete input
Analog input
analog output
AS-i inputs
Which element is denoted by the letter Q in the LOGO!Soft_Comfort program?
Discrete output
Discrete input
Analog input
Analog output
AS-i inputs
Which element is denoted by the letter AI in the LOGO!Soft_Comfort program?
Discrete output
Discrete input
Analog input
Analog output
AS-i inputs
Which element is denoted by the letter AQ in the LOGO!Soft_Comfort program?
Discrete output
Discrete input
Analog input
Analog output
AS-i inputs
Which of the following features are typical for the further operation of the LOGO! in the event of a power failure (shutdown)
internal clock in LOGO! continue to work from backup power supply
switching states and counter values are always stored in special functions
the REM memory area is completely erased
saving the current values of block variables in the RAM memory area
all answers are correct
What is meant by markers when programming a LOGO! in FBD language
virtual outputs that have the same value at their output as at their input
open connector
controller program execution status flags
blocks that allow you to display various data on the display controllers
there are no such program elements on FBD
The LOGO! controller memory required for special functions is divided into 4 areas. What is stored in the PAR memory area
current actual values
stores initial (set) values
used by the controller to implement time functions
the actual values to be saved
information about the progress of the program execution by the controller
The maximum number of elements used when compiling a program in the FBD language, connected in series from input to output, for LOGO! must not exceed:
56
48
7
10
8
The typical value of the current of one discrete input at an input voltage of 24V is about ...
5mA
2mA
10mA
8mA
0mA
State the main advantages of the PLC polling system.
ease of implementation, ease of programming
high system sensitivity
high speed of the system
no merit
small error
The typical voltage value of one digital input at an input current of 10mA is about…
20V
24V
10V
5V
1V
Scope of PC-based PLC
With several inputs and outputs of the object, it is necessary to perform a large amount of calculations in a sufficiently small-time interval
Automation tools operate in an environment not too different from that of conventional PCs
It is advisable to program the functions implemented by the controller not in one of the standard technological languages, but in an ordinary high-level language
Powerful support for the operator's work implemented in conventional controllers (diagnostics, troubleshooting without stopping the controller, software modification during the operation of the automation system)
All answers are correct
The main differences between a small-scale DCS and network controllers
In a slightly larger variety of controller modifications
In greater power of central processors
In a more developed and flexible network structure
In that they are designed to work in various environmental conditions
All answers
According to the technical capabilities that determine the level of tasks to be solved, PLCs are divided into classes:
Nano
Micro
Small
Medium and large
All answers
All discrete inputs (general version) of the controllers are designed to receive standard signals with a level of ??V DC.
24V
12V
48V
6V
The combination of all LOGO! modules into a single device is carried out through:
Introduction of a new module
external bus
Single common module
Inner bus
Embedded microprocessor
DM8 expansion modules can only be connected to modules with the same level:
Supply voltage and type of current
Voltage and marking
Resistance and current
Power, body color and resistance
Power and direct current
Programming logic modules LOGO! Can be performed:
Directly from the keyboard of the LOGO! basic
In the ISaGraf environment
In Scada system
In the C++ environment
In the Pascal programming environment
What languages are LOGO! controllers programmed in:
C++, Visual Basic
Assembler
FBD, LAD
SFC, LD
FD, LD
What does the SF library contain?
A set of special-purpose functions
Trigonometric functions
Timers and counters
A set of functions containing the basic logical operations
Logarithmic functions
To avoid installation errors, all DM8 modules are equipped with
Coding grooves and pins
Special terminals
Inputs and outputs of various colors
Translation slider
Indicator
Which two libraries group all the functions built into the operating system of LOGO! logic modules:
GF and SF
NF and MF
NF and FF
GF and NF
SF and NF
What does the GF library contain?
A set of special-purpose functions
Trigonometric functions
Timers and counters
A set of functions containing the basic logical operations
Logarithmic functions
The total number of connected analog modules is limited to
Required value of analog inputs
Required value of analog outputs
The maximum configuration of the logic module
The total number of pluggable analog modules is not limited at all
Required value of digital inputs and outputs
The LOGO!AM2 module is designed for
generation of voltage signals 0…10V or current strength 0…20mA
increasing the number of discrete inputs
temperature measurements with Pt100 sensors
increasing the number of analog inputs
increasing the number of special-purpose functions
Communication module LOGO! CM supports
4 discrete inputs and 4 discrete outputs
4 analog inputs and 4 analog outputs
4 virtual discrete inputs and 4 virtual discrete outputs
It has neither analog nor discrete inputs and outputs
2 analog inputs
How many outputs can be served by the maximum configuration of the logic module LOGO24!:
16
14
4
24
8
Select an analog input module in the LOGO! family
DM8
AM2
LON
CM8
RS2
Which parameters belong to the special function "off delay"
Trg, R, Q
Trg, T, R, Q
T, R, Q
Trg, T, R
T, Q
What does real-time data transmission mean?
There should be no data transfer delay and no information loss
There should be no delay in data transfer, but some loss of information is possible
There should be no loss of information, but there may be a delay
There should be no loss of information
There should be no time delay in the transmission of information
A graphical language used to describe an algorithm as a set of connected pairs: a step and a transition.
SFC (Sequential Function Chart)
LD (Ladder Diagram)
FBD (Functional Block Diagram)
ST (Structured Text)
IL (Instruction List)
Logical expressions in this language are described in the form of relays and contacts.
SFC (Sequential Function Chart)
LD (Ladder Diagram)
FBD (Functional Block Diagram)
ST (Structured Text)
IL (Instruction List)
What are the interconnected segments of industrial networks.
Optical fiber cables
Routers
Infrared ports
Telephone lines
Satellite connection
In what form does the signal transmitted from the sensors / PLC enter the monitoring (supervision) control system of the DCS
In digital sequence
In analog sequence
As an encrypted message
Plain text
It can't be transferred
How many digital and analog inputs can the maximum configuration of LOGO!
24 discrete and 8 analog inputs
8 discrete and 24 analog
16 discrete and 8 analog
24 discrete and 16 analog
8 discrete and 16 analog
Select a communication module from the following:
LOGO CM
LOGO RS
LOGO VS
LOGO FBD
LOGO LD
How LOGO logic modules are connected to the network.
Through communication modules
Super high speed bus
Telephone lines
Modem
Satellite communications
Choose the most complete and correct definition of a PLC:
PLC is an information channel that combines all the functional blocks of the MPS and provides data exchange in the form of binary numbers
PLC - a device that directly carries out the data processing process and program control of this process
PLC is a combinational logic circuit with the help of which the information processing process is carried out
PLC is a device designed to collect, convert, process, store information and generate signals for indication and control
A PLC is an analog device with built-in microcircuits containing specific information
What are the special analog inputs for:
thermistors and voltmeter
connection of resistance thermometers and thermocouples
transistor and diode
ammeter and diode
ammeter and voltmeter
Which of the following elements are accepted by the LOGO! how are the sensors?
push buttons
switches
photoelectric barriers
control switches
all answers are correct
Memory modules...
Designed for long-term storage of programs and data
Transferring programs from one logical module to another
To save data during power outages of logic modules
Correct answers A and B
All answers are correct
Turn ON a machine when the I1 is pressed and the machine door is closed
weekly timer
latching relay
up/down counter
on delay
Count the number of produced Cola cans
hours relay
latching relay
up/down counter
on delay
Switch OFF a machine after a certain time
Off delay
Latching relay
Up/down counter
On delay
Gate should open automatically at sunrise and close again after sunset
weekly timer
years timer
up/down counter
astronomical clock
The engine turns on and off at the specified time intervals: 10 sec. works, 5 sec. pause.
on off delay
latching relay
up down counter
Turn ON and Turn OFF a motor using the same function block
or
and
not
on delay
In case of an emergency, the display will show "ATTENTION"
on off
latching relay
up down
text messages
Turn ON a lamp using either I1 or I2 or both
not
and
or
on delay
Cable conductor cross-sections for LOGO logic controllers
From 1.5 mm2 to 2.5 mm2
From 2.5 mm2 to 3.5 mm2
From 3.5 mm2 to 4.5 mm2
From 4.5 mm2 to 5.5 mm2
Scada is an abbreviation for:
Supervisory Control and Document Acquisition
Supervisory Control and Data Acquisition
Supervisory Column and Data Assessment
Supervisory Column and Data Assessment
DCS is a __________________
Distributed Control System
Data Control System
Data Column System
Distributed Column System
Which of the following is the heart of a SCADA system?
PLC
HMI
Alarm task
I/O
The SCADA systems used to _______
Monitor
Control
Both a and b
None of the above
The standard form of HMI is
Human Master Interface
Human Machine Interface
Human Main Interface
None of the above
Where SCADA can be used?
Manufacturing
Mass transit
Traffic signals
All of the above
What does this symbol represents?
A normal output
Normally open push button
Normally closed push button
Inverted output
What is this symbol called?
Normally Close contact
Output coil
Normally Open contact
Timer
What is this symbol called?
Normally Close contact
Output Coil
Normally Open contact
Timer
Disadvantage of PLC is _________
Security
Fixed program application
Documentation
Pilot running
