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Applied automation > Eksamen > Flashcards

Eksamen Flashcards

1
Q

QUESTION 1

What are the advantage of OPC-UA over traditionally field busses?

Built in security

Self describing object model

It’s an open standard

All of the answers are correct

A

QUESTION 1

What are the advantage of OPC-UA over traditionally field busses?

Built in security

Self describing object model

It’s an open standard

All of the answers are correct !!!!!!!!!!

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2
Q

QUESTION 2

What is the Address space of an OPC-UA Server?

The IP address of the server

The browsable nodes on the server

A list of the clients that are allowed to connect to the server

The allocated memory for each connection

A

QUESTION 2

What is the Address space of an OPC-UA Server?

The IP address of the server

The browsable nodes on the server !!!!!!!!!!!!!!

A list of the clients that are allowed to connect to the server

The allocated memory for each connection

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3
Q

QUESTION 3

What is a NodeID?

A unique id of a client

A unique id of a server

A unique id of an object (variable, program, datatype etc.)

A unique id of a security certificate

A

QUESTION 3

What is a NodeID?

A unique id of a client

A unique id of a server

A unique id of an object (variable, program, datatype etc.) !!!!!!!!!!!

A unique id of a security certificate

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4
Q

QUESTION 4

Is OPC-UA a deterministic realtime protocol?

It depends on the amount of data that has to be transferred

Yes - but only together with TSN

Yes - OPC-UA is an industrial protocol and is of course deterministic

No - OPC-UA is based on TCP-IP which is not deterministic nor realtime

A

QUESTION 4

Is OPC-UA a deterministic realtime protocol?

It depends on the amount of data that has to be transferred

Yes - but only together with TSN !!!!!!!!!!!

Yes - OPC-UA is an industrial protocol and is of course deterministic

No - OPC-UA is based on TCP-IP which is not deterministic nor realtime

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5
Q

QUESTION 5

When calling a method from an OPC-UA client, where is the method executed?

Only on the server

Only on the client

The method is executed on all connected clients

Methods are not yet supported by OPC-UA but will be added in the future

A

QUESTION 5

When calling a method from an OPC-UA client, where is the method executed?

Only on the server !!!!!!!!!

Only on the client

The method is executed on all connected clients

Methods are not yet supported by OPC-UA but will be added in the future

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6
Q

QUESTION 6

One of the following node references does NOT exist in the default namespaces. Which one?

Organizes

HasComponent

HasProperty

HasElement

A

QUESTION 6

One of the following node references does NOT exist in the default namespaces. Which one?

Organizes

HasComponent

HasProperty

HasElement !!!!!!!!!!!!!!!!

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7
Q

QUESTION 7

When configuring an OpcUa_Any device on the B&R PLC, what type of OPC-UA service are we dealing with?

A standard OPC-UA Server

A custom B&R OPC-UA Server

A basic OPC-UA client

The device is a server and a client at the same time

A

QUESTION 7

When configuring an OpcUa_Any device on the B&R PLC, what type of OPC-UA service are we dealing with?

A standard OPC-UA Server

A custom B&R OPC-UA Server

A basic OPC-UA client !!!!!!

The device is a server and a client at the same time

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8
Q

QUESTION 8

What is the difference between a node subscription function and a node read function?

Nothing. It is two words for the same thing

The node read is only returning the value of the node once when it is called. The node subscription is handled by the server and is continuously monitoring the node and sending new values to the client when the value has changed.

Node read is only possible with a Client/Server setup where node subscription is only possible with a Pub/Sub setup.

The two functions has to be defined on the server first. It is up to the user how the two functions are implemented.

A

QUESTION 8

What is the difference between a node subscription function and a node read function?

Nothing. It is two words for the same thing

The node read is only returning the value of the node once when it is called. The node subscription is handled by the server and is continuously monitoring the node and sending new values to the client when the value has changed. !!!!!!!!

Node read is only possible with a Client/Server setup where node subscription is only possible with a Pub/Sub setup.

The two functions has to be defined on the server first. It is up to the user how the two functions are implemented.

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9
Q

QUESTION 9

How many Controlled nodes can you have on a single Powerlink network?

239

32767

127

Unlimited

A

QUESTION 9

How many Controlled nodes can you have on a single Powerlink network?

239 !!!!!!!!!!!!

32767

127

Unlimited

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10
Q

QUESTION 10

What are the benefit of using the Broadcast feature of Powerlink?

It can be used for checksum validation of data on the bus, to ensure high data integrity

“It is used by the master (Managing node) to monitor the ““heart beat”” of all the Slaves (Controlled nodes) to quickly and safe act on connection errors”

it is used to configure the network fast, without having to set up each node individually

“It is used by the nodes on the network to ““cross communicate”” directly to each other. This way data exchange can happen in only one Powerlink cycle.”

A

QUESTION 10

What are the benefit of using the Broadcast feature of Powerlink?

It can be used for checksum validation of data on the bus, to ensure high data integrity

“It is used by the master (Managing node) to monitor the ““heart beat”” of all the Slaves (Controlled nodes) to quickly and safe act on connection errors”

it is used to configure the network fast, without having to set up each node individually

“It is used by the nodes on the network to ““cross communicate”” directly to each other. This way data exchange can happen in only one Powerlink cycle.”!!!!!!!!!!!

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11
Q

QUESTION 11

What is needed when interfacing a Profinet device?

XDD File

GSD File

EDS File

DBC File

A

QUESTION 11

What is needed when interfacing a Profinet device?

XDD File

GSD File !!!!!!!!!!!

EDS File

DBC File

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12
Q

QUESTION 12

What is needed when interfacing a powerlink device

GSD File

XDD File - Kan også være XDC

DBC File

EDS File

A

QUESTION 12

What is needed when interfacing a powerlink device

GSD File

XDD File - Kan også være XDC !!!!!!!!

DBC File

EDS File

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13
Q

QUESTION 13

What are the cascaded controller order in the servo drive used during the assignments?

(1) Position controller (2) Speed controller (3) Current controller
(1) Speed controller (2) Position controller (3) Current controller
(1) Position controller (2) Speed controller (3) Voltage controller
(1) Speed controller (2) Current controller (3) Voltage controller

A

QUESTION 13

What are the cascaded controller order in the servo drive used during the assignments?

(1) Position controller (2) Speed controller (3) Current controller !!!!!
(1) Speed controller (2) Position controller (3) Current controller
(1) Position controller (2) Speed controller (3) Voltage controller
(1) Speed controller (2) Current controller (3) Voltage controller

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14
Q

QUESTION 14

What feedback do you get from the motor encoder?

Actual position

Actual position + Actual speed

Actual speed

Actual position difference from last cycle

A

QUESTION 14

What feedback do you get from the motor encoder?

Actual position !!!!!!!

Actual position + Actual speed

Actual speed

Actual position difference from last cycle

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15
Q

QUESTION 15

What is the purpose of the predictive part in the Position controller?

To compensate for frictions, inertia and load torque

To compensate for the speed filters

To compensate for dead time in the mechanical system

To compensate for the system discretization

A

QUESTION 15

What is the purpose of the predictive part in the Position controller?

To compensate for frictions, inertia and load torque !!!!!!!!!

To compensate for the speed filters

To compensate for dead time in the mechanical system

To compensate for the system discretization

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16
Q

QUESTION 16

What are the benefits of the Feed Forward Controller?

Predicts the acceleration/deceleration and adds to the Speed controller speed error

Predicts the acceleration/deceleration and adds to the Position controller position error

It compensates for system dead time

It compensates for system loads and frictions

A

QUESTION 16

What are the benefits of the Feed Forward Controller?

Predicts the acceleration/deceleration and adds to the Speed controller speed error

Predicts the acceleration/deceleration and adds to the Position controller position error !!!!!!!

It compensates for system dead time

It compensates for system loads and frictions

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17
Q

QUESTION 17

We have traced an additive movement, what is traced from the top down?

Acceleration, position and speed

Position, speed and acceleration

Speed, position and acceleration

Position, acceleration and speed

A

QUESTION 17

We have traced an additive movement, what is traced from the top down?

Acceleration, position and speed

Position, speed and acceleration !!!!!!!

Speed, position and acceleration

Position, acceleration and speed

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18
Q

QUESTION 18

In what order should a manual servo loop tuning be performed?

Tune the speed controller, with position controller switched off to until lag error measurement is acceptable; then tune the position controller.

Tune the speed controller, with position controller switched off until instability is reached; then tune the position controller.

Tune the position controller, with speed controller switched off to until instability is reached, then tune the speed controller.

Tune the position controller, then the speed controller and finally the current controller.

A

QUESTION 18

In what order should a manual servo loop tuning be performed?

Tune the speed controller, with position controller switched off to until lag error measurement is acceptable; then tune the position controller. !!!!!

Tune the speed controller, with position controller switched off until instability is reached; then tune the position controller.

Tune the position controller, with speed controller switched off to until instability is reached, then tune the speed controller.

Tune the position controller, then the speed controller and finally the current controller.

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19
Q

QUESTION 19

The servo loop performance of a mechanical system is best analyzed with the following method?

With a Bode plot

Tracing the lag error on a movement

Tracing the actual position, speed and acceleration on a movement

Using Fast Fourier Transformation to find resonance frequencies

A

QUESTION 19

The servo loop performance of a mechanical system is best analyzed with the following method?

With a Bode plot !!!!!!

Tracing the lag error on a movement

Tracing the actual position, speed and acceleration on a movement

Using Fast Fourier Transformation to find resonance frequencies

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20
Q

QUESTION 20

The anti-resonance frequency is defined by the following

A pronounced minimum in the amplitude of one oscillator at a particular frequency

A pronounced maxmum in the amplitude of one oscillator at a particular frequency

A pronounced minimum phase shift of one oscillator at a particular frequency

Is the center frequency of the resonance frequency

A

QUESTION 20

The anti-resonance frequency is defined by the following

A pronounced minimum in the amplitude of one oscillator at a particular frequency !!!!!!

A pronounced maxmum in the amplitude of one oscillator at a particular frequency

A pronounced minimum phase shift of one oscillator at a particular frequency

Is the center frequency of the resonance frequency

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21
Q

QUESTION 21

Which of the following filters had the best effect on the tuning parameters in the portfolio assignement Servo Loop Performance?

Without filter

Bi-quad filter

Low pass filter

Notch filter

A

QUESTION 21

Which of the following filters had the best effect on the tuning parameters in the portfolio assignement Servo Loop Performance?

Without filter

Bi-quad filter

Low pass filter

Notch filter !!!!!!

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22
Q

QUESTION 22

The mechanical system tuned in the portfolio assignment Servo Loop Performance, can be defined as:

A multi-order dynamical system

A 1st order dynamical system

A 2nd order dynamical system

None of the above

A

QUESTION 22

The mechanical system tuned in the portfolio assignment Servo Loop Performance, can be defined as:

A multi-order dynamical system

A 1st order dynamical system

A 2nd order dynamical system !!!!!

None of the above

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23
Q

QUESTION 23

The bandwidth of a mechanical system is defined by:

The frequency at which the closed loop amplitude response crosses 0 dB

The frequency at which the closed loop amplitude response falls to -3 dB

The frequency at which the closed loop phase crosses -180 deg

The frequency at which the open loop amplitude response falls to -3 dB

A

QUESTION 23

The bandwidth of a mechanical system is defined by:

The frequency at which the closed loop amplitude response crosses 0 dB

The frequency at which the closed loop amplitude response falls to -3 dB !!!!!!

The frequency at which the closed loop phase crosses -180 deg

The frequency at which the open loop amplitude response falls to -3 dB

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24
Q

QUESTION 24

Which of the following has influence on the performance of a mechnical system

Inertia mismatch

Flexibility of the mechanics

Sample time of the servo controller

All of the above

A

QUESTION 24

Which of the following has influence on the performance of a mechnical system

Inertia mismatch

Flexibility of the mechanics

Sample time of the servo controller

All of the above !!!!!!

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25
Q

QUESTION 25

What is the purpose of the brushes in a DC motor

Cool the rotor

Transfer electricity to the rotor

Dampen the acustic noise

Dampend the EMI

A

QUESTION 25

What is the purpose of the brushes in a DC motor

Cool the rotor

Transfer electricity to the rotor !!!!!

Dampen the acustic noise

Dampend the EMI

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26
Q

QUESTION 26

What is typical wearing part of a DC motor

The magnets

The axle

The isolation material

The brushes

A

QUESTION 26

What is typical wearing part of a DC motor

The magnets

The axle

The isolation material

The brushes !!!!!

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27
Q

QUESTION 27

Can a stepper motor run directly from a DC source

No

Yes

Yes, but very slow

Yes, but only at full speed

A

QUESTION 27

Can a stepper motor run directly from a DC source

No !!!!!

Yes

Yes, but very slow

Yes, but only at full speed

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28
Q

QUESTION 28

What is the typical benefit of a stepper motor

High speed

High torque density

Low noise

Very linear speed

A

QUESTION 28

What is the typical benefit of a stepper motor

High speed

High torque density !!!!!!

Low noise

Very linear speed

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29
Q

QUESTION 29

What is the typical voltage range of stepper motors

230-480V

115-230V

5-80V

0-3V

A

QUESTION 29

What is the typical voltage range of stepper motors

230-480V

115-230V

5-80V !!!!!!

0-3V

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30
Q

QUESTION 30

Why is the asynchronous motor so common

High precision

Very compact

Low cost

Very efficient

A

QUESTION 30

Why is the asynchronous motor so common

High precision

Very compact

Low cost !!!!!

Very efficient

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31
Q

QUESTION 31

How is the magnetic field typically generated in synchronous motors

By injecting AC current into the supply

By the rotational force

By permanent magnets

It is not needed

A

QUESTION 31

How is the magnetic field typically generated in synchronous motors

By injecting AC current into the supply

By the rotational force

By permanent magnets !!!!!!

It is not needed

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32
Q

QUESTION 32

What are the main parts of a frequency inverter (converters?)

Rectifier + DC-bus

Rectifier + DC-bus + Inverter

Inverter + DC-bus + Inverter

Solid state relay

A

QUESTION 32

What are the main parts of a frequency inverter (converters?)

Rectifier + DC-bus

Rectifier + DC-bus + Inverter !!!!!!

Inverter + DC-bus + Inverter

Solid state relay

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33
Q

QUESTION 33

What is mandatory in a closed loop servo motor system

Stepper motor

A common DC-bus

A motor with permanent magnets

Some sort of encoder feedback from the motor

A

QUESTION 33

What is mandatory in a closed loop servo motor system

Stepper motor

A common DC-bus

A motor with permanent magnets

Some sort of encoder feedback from the motor !!!!

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34
Q

QUESTION 34

What is the difference between incremental- & absolute encoder

Incremental encoder is the most precise

Absolute encoder is the most precise

Incremental is best for high speed applications

Absolute encoder can remember the position after power interruption

A

QUESTION 34

What is the difference between incremental- & absolute encoder

Incremental encoder is the most precise

Absolute encoder is the most precise

Incremental is best for high speed applications

Absolute encoder can remember the position after power interruption !!!!!!

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35
Q

QUESTION 35

Which signal type does a resolver deliver

High voltage (>24V)

Analog

TTL pulse train

RS485 protocol

A

QUESTION 35

Which signal type does a resolver deliver

High voltage (>24V)

Analog !!!!!!

TTL pulse train

RS485 protocol

36
Q

QUESTION 36

What is the definition of inertia mismatch in motor design

The quality of the mechanical coupling

The gear ratio between the load & motor

The load inertia compared to the motors rotor inertia

The weight of the motors rotor divided by the motors torque

A

QUESTION 36

What is the definition of inertia mismatch in motor design

The quality of the mechanical coupling

The gear ratio between the load & motor

The load inertia compared to the motors rotor inertia !!!!!

The weight of the motors rotor divided by the motors torque

37
Q

QUESTION 37

In which PLCopen state is the MoveAbsolute executed?

Standstill

Continuous Motion

Discrete Motion

Running Motion

A

QUESTION 37

In which PLCopen state is the MoveAbsolute executed?

Standstill

Continuous Motion

Discrete Motion !!!!!!

Running Motion

38
Q

QUESTION 38

How is the master axis affected to the function ‘gear in’ from a slave axis?

Master follows the slave

Master waits for the master and slave speed to match

Master axis must always be faster than the slave

Master axis is not affected at all

A

QUESTION 38

How is the master axis affected to the function ‘gear in’ from a slave axis?

Master follows the slave

Master waits for the master and slave speed to match

Master axis must always be faster than the slave

Master axis is not affected at all !!!!!

39
Q

If we have a mechanical non-periodic system, where 5 motor revolutions equals to 1 revolution on the output shaft of a gearbox, and 1 revolution of the output shaft of the gearbox gives a mechanical movement of 15mm, and we want to achieve an application resolution of 0,01mm, then how should the motor_rev, units, periode and factor values be set in PLCopen?

rev_motor = 5, units = 1500, period = 0, factor = 100

rev_motor = 5, units = 150, period = 0, factor = 100

rev_motor = 50, units = 1500, period = 0, factor = 1000

rev_motor = 5, units = 1500, period = 0, factor = 1000

A

If we have a mechanical non-periodic system, where 5 motor revolutions equals to 1 revolution on the output shaft of a gearbox, and 1 revolution of the output shaft of the gearbox gives a mechanical movement of 15mm, and we want to achieve an application resolution of 0,01mm, then how should the motor_rev, units, periode and factor values be set in PLCopen?

rev_motor = 5, units = 1500, period = 0, factor = 100

Answer: 331, 332 Datasheet - As said we have 5 motion revolutions for one revolution of the gearbox. This in turn moves the output movement 15mm. This is described as 15 units. We want a precision of 0,01mm. We then need to multiply the unit value by 100 (This is the factor), giving us a unit = 1500. The period is only used for periodic axis (e.g. a conveyor belt). At this value the position is reset and counts from 0 again. As this is not required here. The period is zero.

rev_motor = 5, units = 150, period = 0, factor = 100

rev_motor = 50, units = 1500, period = 0, factor = 1000

rev_motor = 5, units = 1500, period = 0, factor = 1000

40
Q

QUESTION 40

When does an axis enter state Standstill after a MC_Stop() command?

When the MC_Stop.Done = TRUE

When the axis speed is 0

When the MC_Stop.Done = TRUE and MC_Stop.Execute is set to false

When the MC_Stop.Done = TRUE and MC_Power.Done = TRUE

A

QUESTION 40

When does an axis enter state Standstill after a MC_Stop() command?

When the MC_Stop.Done = TRUE

When the axis speed is 0

When the MC_Stop.Done = TRUE and MC_Stop.Execute is set to false

When the MC_Stop.Done = TRUE and MC_Power.Done = TRUE !!!!!!

41
Q

QUESTION 41

PLCopen motion control function blocks either have an enable or execute input. What is the difference?

Enable looks at the input level, where execute looks for a rising edge.

Execute looks at the input level, where enable looks for a rising edge.

Enable needs to be tied to a variable and execute must be tied to a physical button.

There is no difference.

A

QUESTION 41

PLCopen motion control function blocks either have an enable or execute input. What is the difference?

Enable looks at the input level, where execute looks for a rising edge. !!!!!

Execute looks at the input level, where enable looks for a rising edge.

Enable needs to be tied to a variable and execute must be tied to a physical button.

There is no difference.

42
Q

QUESTION 42

From which PLCopen state, can an axis enter the Errorstop state?

Only from the Aborting state

From all states that perform a movement of the axis

From any state - if the axis is powered on and homed

From any state - If an error has occurred on the axis

A

QUESTION 42

From which PLCopen state, can an axis enter the Errorstop state?

Only from the Aborting state

From all states that perform a movement of the axis

From any state - if the axis is powered on and homed

From any state - If an error has occurred on the axis !!!!

43
Q

QUESTION 43

Which of the following are inputs, that PLCopen all function blocks have?

Axis reference and Enable/Execute

Axis reference and acceleration/deceleration

Master and slave axis references

Enable and execute

A

QUESTION 43

Which of the following are inputs, that PLCopen all function blocks have?

Axis reference and Enable/Execute !!!!!

Axis reference and acceleration/deceleration

Master and slave axis references

Enable and execute

44
Q

QUESTION 44

What happens if a PLCopen function block is called with execute input set TRUE for 1 scan, and then the execute input is set FALSE?

The execution of the function block is aborted

The function block gets stuck in a loop, and never finished the execution.

The function block reports back an error ID.

The function block is executing correctly - Output signals are only present for 1 scan after completion.

A

QUESTION 44

What happens if a PLCopen function block is called with execute input set TRUE for 1 scan, and then the execute input is set FALSE?

The execution of the function block is aborted

The function block gets stuck in a loop, and never finished the execution.

The function block reports back an error ID.

The function block is executing correctly - Output signals are only present for 1 scan after completion. !!!!!

45
Q

QUESTION 45

What does it mean, If an axis is configured as a periodic axis?

The PLCopen axis position will roll over, when the maximum value of the position datatype is reached (DINT 2^32).

The PLCopen axis position will roll over and restart from the home position, every time the periodic position is reached - The axis scaling itself is overwritten by the axis period.

Singleturn encoder motors are always periodic, multiturn encoders are non-periodic.

The PLCopen axis position will roll over and restart from 0, every time the periodic position is reached - The axis scaling itself is not affected.

A

QUESTION 45

What does it mean, If an axis is configured as a periodic axis?

The PLCopen axis position will roll over, when the maximum value of the position datatype is reached (DINT 2^32).

The PLCopen axis position will roll over and restart from the home position, every time the periodic position is reached - The axis scaling itself is overwritten by the axis period.

Singleturn encoder motors are always periodic, multiturn encoders are non-periodic.

The PLCopen axis position will roll over and restart from 0, every time the periodic position is reached - The axis scaling itself is not affected. !!!!!

46
Q

QUESTION 46

What is the Position input on the MC_Home function block?

It is what the position value will be set to, after a homing has been completed.

This is the home position, and should always be set to 0.

It is the home position, that is used exclusively when homing mode Direct is used.

It is the physical value of the axis encoder in the home position.

A

QUESTION 46

What is the Position input on the MC_Home function block?

It is what the position value will be set to, after a homing has been completed.

This is the home position, and should always be set to 0.

It is the home position, that is used exclusively when homing mode Direct is used.

It is the physical value of the axis encoder in the home position. !!!!!!

47
Q

QUESTION 47

What is the difference between Discrete and Continous movement types in PLCopen motion?

Discrete movements happen in Synchronized Motion state, but only for the slave axis. Continous movements happen in Continous Motion state, and are movements that have no defined end, and will continue until stopped or interrupted by another movement.

Discrete movements happen in Discrete Motion state, and are movements that have a defined end. Continous movements happen in Continous Motion state, and are movements that have no defined end, and will continue until stopped or interrupted by another movement.

Discrete movements happen in Discrete Motion state, and are movements that have a defined end. Continous movements happen in Synchronized Motion state, but only for the slave axis.

Servo motors always operate in discrete movement, while frequency inverters always operation in continous movement.

A

QUESTION 47

What is the difference between Discrete and Continous movement types in PLCopen motion?

Discrete movements happen in Synchronized Motion state, but only for the slave axis. Continous movements happen in Continous Motion state, and are movements that have no defined end, and will continue until stopped or interrupted by another movement.

Discrete movements happen in Discrete Motion state, and are movements that have a defined end. Continous movements happen in Continous Motion state, and are movements that have no defined end, and will continue until stopped or interrupted by another movement. !!!!!

Discrete movements happen in Discrete Motion state, and are movements that have a defined end. Continous movements happen in Synchronized Motion state, but only for the slave axis.

Servo motors always operate in discrete movement, while frequency inverters always operation in continous movement.

48
Q

QUESTION 48

What is the definition of lag error on an axis?

Axis is in an error state, and cannot be started

The difference between the set position, and the actual position

The axis is running uneven, a laggy motion.

A set position has been requested, which is outside the period of a periodic axis

A

QUESTION 48

What is the definition of lag error on an axis?

Axis is in an error state, and cannot be started

The difference between the set position, and the actual position !!!!!

The axis is running uneven, a laggy motion.

A set position has been requested, which is outside the period of a periodic axis

49
Q

QUESTION 49

What runtime capabilites has Automation Runtime

Real-time performance

Non deterministic execution

Multi-threading system

Real-time, non deterministic and multi-threading

A

QUESTION 49

What runtime capabilites has Automation Runtime

Real-time performance !!!!!

Non deterministic execution

Multi-threading system

Real-time, non deterministic and multi-threading

50
Q

QUESTION 50

What is the most important difference between Automation Runtime and Windows

Input/output modules can be connected

OPC-UA server

Deterministic task scheduling

Windows cannot run on an industrial PC

A

QUESTION 50

What is the most important difference between Automation Runtime and Windows

Input/output modules can be connected

OPC-UA server

Deterministic task scheduling !!!!!

Windows cannot run on an industrial PC

51
Q

QUESTION 51

What kind of service it not a standard part of the Automation Runtime?

MySQL database

Web server

FTP server

OPC-UA server

A

QUESTION 51

What kind of service it not a standard part of the Automation Runtime?

MySQL database !!!!!

Web server

FTP server

OPC-UA server

52
Q

QUESTION 52

What kind of PLC memory is used to store the values of PLC variables after a power failure?

SRAM and FRAM

SRAM

DRAM

FRAM

A

QUESTION 52

What kind of PLC memory is used to store the values of PLC variables after a power failure?

SRAM and FRAM

SRAM

DRAM !!!!!

FRAM

53
Q

QUESTION 53

What kind of PLC memory could be compared to RAM on a personal computer?

SRAM

DRAM

FRAM

ROM

A

QUESTION 53

What kind of PLC memory could be compared to RAM on a personal computer?

SRAM

DRAM !!!!!

FRAM

ROM

54
Q

QUESTION 54

What kind of PLC memory is important if you mark a PLC variable as retained?

SRAM or FRAM

Flash memory

DRAM

Cache memory

A

QUESTION 54

What kind of PLC memory is important if you mark a PLC variable as retained?

SRAM or FRAM !!!!!

Flash memory

DRAM

Cache memory

55
Q

QUESTION 55

What kind of PLC memory is relying on a battery in the PLC?

DRAM

Flash memory

FRAM

SRAM

A

QUESTION 55

What kind of PLC memory is relying on a battery in the PLC?

DRAM

Flash memory

FRAM

SRAM !!!!!

56
Q

QUESTION 56

Where is the PLC program saved when the PLC is not powered on?

Flash memory

FRAM

SRAM

DRAM

A

QUESTION 56

Where is the PLC program saved when the PLC is not powered on?

Flash memory !!!!!

FRAM

SRAM

DRAM

57
Q

QUESTION 57

What is a watch-dog on a PLC?

It is a restart button on the PLC

It is a service that monitors that the scheduler timing rules can be fulfilled

It is an interrupt service that the programmer can use.

It is an I/O scheduler service.

A

QUESTION 57

What is a watch-dog on a PLC?

It is a restart button on the PLC

It is a service that monitors that the scheduler timing rules can be fulfilled !!!!!

It is an interrupt service that the programmer can use.

It is an I/O scheduler service.

58
Q

QUESTION 58

What happens if you try to create an endless while loop in your PLC program?

It uses all ressources on the PLC and leaves no time for other processes.

It triggers a watch-dog after some time and the PLC goes to service mode

It is allowed to run endlessly, but only when the task is scheduled to run by the scheduler.

The compiler will give you an error as it is not allowed.

A

QUESTION 58

What happens if you try to create an endless while loop in your PLC program?

It uses all ressources on the PLC and leaves no time for other processes.

It triggers a watch-dog after some time and the PLC goes to service mode !!!!!

It is allowed to run endlessly, but only when the task is scheduled to run by the scheduler.

The compiler will give you an error as it is not allowed.

59
Q

QUESTION 59

What could be the best solution if you have a program that require real-time performance every 400 µs, but once in a while you have to do some heavy mathematical algorithms which takes more than 400 µs for the PLC to complete?

Set task-class cycle time of 400us and a tolerance time at 0us

Set task-class cycle time to 400 us and higher task class tolerance

Get a better performing PLC.

Split the program into two task classes

A

QUESTION 59

What could be the best solution if you have a program that require real-time performance every 400 µs, but once in a while you have to do some heavy mathematical algorithms which takes more than 400 µs for the PLC to complete?

Set task-class cycle time of 400us and a tolerance time at 0us

Set task-class cycle time to 400 us and higher task class tolerance

Get a better performing PLC.

Split the program into two task classes !!!!!

60
Q

QUESTION 60

What is idle-time?

Time where the PLC is doing nothing

Time where scheduled tasks can be executed

Time where the PLC is executing tasks that does not need to be scheduled

Time where I/O scheduling is done

A

QUESTION 60

What is idle-time?

Time where the PLC is doing nothing !!!!!

Time where scheduled tasks can be executed

Time where the PLC is executing tasks that does not need to be scheduled

Time where I/O scheduling is done

61
Q

QUESTION 61

What would be a reason for choosing one of the graphical programming languages?

Easy to troubleshoot by e.g. a service engineer or a technician.

Gives a good overview of very large programs.

Can easily be converted to high level languages if needed.

Graphical languages are old school and will never be chosen for a new project.

A

QUESTION 61

What would be a reason for choosing one of the graphical programming languages?

Easy to troubleshoot by e.g. a service engineer or a technician. !!!!

Gives a good overview of very large programs.

Can easily be converted to high level languages if needed.

Graphical languages are old school and will never be chosen for a new project.

62
Q

QUESTION 62

Instruction List memory usage - Which statement is true?

Instruction List uses a lot of memory, because it is a high level language.

Instruction List uses a lot of memory, because you have to program many lines, even for simple tasks.

Instruction List uses little memory, because it is a low level language.

Instruction List only uses little memory if you avoid using labels.

A

QUESTION 62

Instruction List memory usage - Which statement is true?

Instruction List uses a lot of memory, because it is a high level language.

Instruction List uses a lot of memory, because you have to program many lines, even for simple tasks.

Instruction List uses little memory, because it is a low level language. !!!!!!

Instruction List only uses little memory if you avoid using labels.

63
Q

QUESTION 63

According to the Ladder Diagram standard, what must be obeyed?

You may not use power flows.

You may not call functions or function blocks.

You may not use contacts.

You may not set a coil more than once in a program.

A

QUESTION 63

According to the Ladder Diagram standard, what must be obeyed?

You may not use power flows.

You may not call functions or function blocks.

You may not use contacts.

You may not set a coil more than once in a program. !!!!!

64
Q

QUESTION 64

Ladder Diagrams have a close resemblance with:

High level programming languages.

Electrical diagrams.

Mathematical equations.

Flow diagrams.

A

QUESTION 64

Ladder Diagrams have a close resemblance with:

High level programming languages.

Electrical diagrams. !!!!!!

Mathematical equations.

Flow diagrams.

65
Q

QUESTION 65

Is it possible to use loops in Structured Text?

Yes, you can use loops like WHILE, FOR and REPEAT.

No, loops cannot be used, because it is a low level language.

Yes, but you can only use the FOR loop.

Yes, but you can only use WHILE and FOR loops.

A

QUESTION 65

Is it possible to use loops in Structured Text?

Yes, you can use loops like WHILE, FOR and REPEAT. !!!!!

No, loops cannot be used, because it is a low level language.

Yes, but you can only use the FOR loop.

Yes, but you can only use WHILE and FOR loops.

66
Q

QUESTION 66

What is the maximum value of an UINT variable?

127

32767

65536

65535

A

QUESTION 66

What is the maximum value of an UINT variable?

127

32767

65536

65535 !!!!

67
Q

QUESTION 67

What is the value of testVar if step = 6 (see example code in picture)?

“testVar = 15;”

“testVar = 20;”

“testVar = 25;”

The example code cannot be executed, because of programming errors.

A

QUESTION 67

What is the value of testVar if step = 6 (see example code in picture)?

“testVar = 15;”

“testVar = 20;”

“testVar = 25;”

The example code cannot be executed, because of programming errors.

68
Q

QUESTION 68

What is the purpose of on a safe digital input module?

To be able to detect short-circuit to supply

To be able to detect short-circuit to ground

To be able to detect short-circuit to other channels

All of the above are correct

A

QUESTION 68

What is the purpose of on a safe digital input module?

To be able to detect short-circuit to supply

To be able to detect short-circuit to ground

To be able to detect short-circuit to other channels

All of the above are correct !!!!!

69
Q

QUESTION 69

What does “via safelogic” mean for a safety output?

Only the non safe application controls the ouput states

Only the safe logic application can control the output state

Both non safe and safe applications control the output state

Output state is permanently on

A

QUESTION 69

What does “via safelogic” mean for a safety output?

Only the non safe application controls the ouput states

Only the safe logic application can control the output state !!!!!

Both non safe and safe applications control the output state

Output state is permanently on

70
Q

QUESTION 70

Where is the safety code executed?

Only in the PLC/CPU

Both in the PLC/CPU and the SafeLogic

Only in the SafeLogic

None of the above

A

QUESTION 70

Where is the safety code executed?

Only in the PLC/CPU

Both in the PLC/CPU and the SafeLogic

Only in the SafeLogic !! - Safety koden bliver kompilet af to forskellige

compiler, og kørt på 2 forskellige cpu’er, så det kan

tjekkes om koden bliverkompileret ens og kørt

rigtig.

None of the above

71
Q

QUESTION 71

What is the purpose of the self-tests of a safe digital output module?

To be able to detect short-circuit to supply or ground

To be able to detect faults on the hardware itself

To test the emergency stop hardware buttons status (pressed / not pressed)

Only safe digital input modules are equipped with this type of test

A

QUESTION 71

What is the purpose of the self-tests of a safe digital output module?

To be able to detect short-circuit to supply or ground !!- Den skal være I stand til at slukke

for systemet selv I korte pulser.

Hvis den ikke kan det, så er det

fordi der er short-curcuit et sted.

To be able to detect faults on the hardware itself

To test the emergency stop hardware buttons status (pressed / not pressed)

Only safe digital input modules are equipped with this type of test

72
Q

QUESTION 72

Which of the following is not part of the safety response time?

The time for the operator to react on an emergency situation

Signal processing time in the sensor

Application processing in the safety PLC

Time for the actuator to stop

A

QUESTION 72

Which of the following is not part of the safety response time?

The time for the operator to react on an emergency situation !!!!!

Signal processing time in the sensor

Application processing in the safety PLC

Time for the actuator to stop

73
Q

QUESTION 73

What is openSafety?

A co-operation between vendors of safety hardware

A safe transfer protocol

A library with safety functions and functionblocks

A programming tool for the safety application

A

QUESTION 73

What is openSafety?

A co-operation between vendors of safety hardware

A safe transfer protocol !! - kører på eksisterende field bus, normal vis power

link, men ikke begrænset til det.

A library with safety functions and functionblocks

A programming tool for the safety application

74
Q

QUESTION 74

What’s the benefit of integrated safety?

Increases the number of hardware modules that can be integrated in a system

Increased reaction time of safety functions

Gives a more flexible safety system with more opportunities than a traditional system

Reduced over-all cost of the safety related part of a machine

A

QUESTION 74

What’s the benefit of integrated safety?

Increases the number of hardware modules that can be integrated in a system

Increased reaction time of safety functions

Gives a more flexible safety system with more opportunities than a traditional system !!!!

Reduced over-all cost of the safety related part of a machine

75
Q

QUESTION 75

What is the “discrepancy time” when talking safety?

The processing time of the signal in the SafePLC

The fieldbus network cycletime

The SafeIO module execution time, i.e. the time it takes to set the output signal

The maximum timedelay between individual signals in a 2-channel safety input

A

QUESTION 75

What is the “discrepancy time” when talking safety?

The processing time of the signal in the SafePLC

The fieldbus network cycletime

The SafeIO module execution time, i.e. the time it takes to set the output signal

The maximum timedelay between individual signals in a 2-channel safety input - video 2. 18:07

76
Q

QUESTION 76

Which command should be used if a machine should transist to PackML state Resetting?

Start

Restart

Reset

Execute

A

QUESTION 76

Which command should be used if a machine should transist to PackML state Resetting?

Start

Restart

Reset !!!!

Execute

77
Q

QUESTION 77

Which state comes after Resetting in the PackML state model?

Idle

Execute

Stopped

Ready

A

QUESTION 77

Which state comes after Resetting in the PackML state model?

Idle !!!!

Execute

Stopped

Ready

78
Q

QUESTION 78

In a machine line, the machine after my machine is blocked, so my machine is not able to deliver its products to the machine next in line.

What PackML state should my machine enter?

Holding / Held

Suspending / Suspended

Blocking / Blocked

Completing / Complete

A

Holding / Held - Når der er noget internt der blockerer (mangler kapsler)

Suspending / Suspended !!!- når der er noget eksternt der blokerer

Blocking / Blocked - eksisterer ikke

Completing / Complete - er kun til maskiner der kører periodiske tjek. Når maskinens

periode er færdig.

79
Q

QUESTION 79

An operator presses the emergency stop button. Which state should my machine go into?

Stopping / Stopped

Terminating / Terminated

Halting / Haulted

Aborting / Aborted

A

QUESTION 79

An operator presses the emergency stop button. Which state should my machine go into?

Stopping / Stopped

Terminating / Terminated

Halting / Haulted

Aborting / Aborted !!!!!

80
Q

QUESTION 80

What does the abbreviation SC mean in PackML?

State Clearing

State Complete

State Continuously

Status Counting

A

QUESTION 80

What does the abbreviation SC mean in PackML?

State Clearing

State Complete !!!!!

State Continuously

Status Counting

81
Q

QUESTION 81

Which state type is state CLEARING?

Acting

Waiting

Dual

Running

A

QUESTION 81

Which state type is state CLEARING?

Acting !!!!!

Waiting

Dual

Running

82
Q

QUESTION 82

Which of the following is not a mode defined in the PackML standard?

Production

Maintenance

Manual

Automatic

A

QUESTION 82

Which of the following is not a mode defined in the PackML standard?

Production

Maintenance

Manual

Automatic !!!!!

83
Q

QUESTION 83

Which PackTags structures are defined in PackML?

Command, Status, Admin

Status, Parameter, Configuration

Command, Alarm, State

Input, Output, In/Out

A

QUESTION 83

Which PackTags structures are defined in PackML?

Command, Status, Admin !!!!!

Status, Parameter, Configuration

Command, Alarm, State

Input, Output, In/Out

84
Q

QUESTION 84

The batch produced on the machine has been finalized. Which state would be the correct state to go to afterwards?

Finalising / Finalized

Stopping / Stopped

Completing / Complete

Finishing / Finished

A

QUESTION 84

The batch produced on the machine has been finalized. Which state would be the correct state to go to afterwards?

Finalising / Finalized

Stopping / Stopped

Completing / Complete -!!! MEN KUN HVIS MASKINEN KØRER BATCH KONTROL?

Finishing / Finished

85
Q

QUESTION 85

What is the lowest module in the ISA88.00.01 Physical Model?

Equipment module

Control module

Sensor

Input / Output

A

QUESTION 85

What is the lowest module in the ISA88.00.01 Physical Model?

Equipment module - anden nederst. Mekatroniske moduler. (PackML video 55:00)

Control module - Nederst. Mere simple funktioner på maskinen. !!!!

Sensor - er ikke med I modellen

Input / Output - er ikke med I modellen

86
Q

QUESTION 86

What is the unit of the MachSpeed PackTag?

Meters / Second

Primary Packages / Minute

Meter / Hour

OEE - Overal equipment effectiveness = Availability * performance *

quality

A

QUESTION 86

What is the unit of the MachSpeed PackTag?

Meters / Second

Primary Packages / Minute !!!!!!

Meter / Hour

OEE - Overal equipment effectiveness = Availability * performance *

quality

87
Q

QUESTION 87

In which state is the machine producing its products?

Execute

Produce

Running

Fabricate

A

QUESTION 87

In which state is the machine producing its products?

Execute !!!!

Produce

Running

Fabricate

Applied automation (1 decks)

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