Deck 8: Data Manipulation Instructions

Question 1

Numerical data I/O interfaces are used to interface multibit and analog devices.

Answer 1

True

Question 2

Data transfer instructions compare the data stored in two or more words.

Answer 2

False

Question 3

The source of a move instruction contains the address where the instruction sends a copy of the data.

Answer 3

False

Question 4

Data transfer instructions can address only a limited number of special locations in the memory.

Question 5

The MOV instruction is used to copy the value in one word to another.

Question 6

Each data manipulation instruction requires two or more words of data memory for operation.

Question 7

Multibit interfaces will not allow a group of bits to be input or output as a unit.

Question 8

Set-point control in its simplest form compares an input value to a set-point value.

Question 9

Data compare instructions involve the transfer of the contents from one word or register to another.

Question 10

The source of a move instruction contains a copy of the data which is to be moved.

Question 11

When the move instruction is true, the value stored at the source address is copied into the destination address.

Question 12

An analog I/O will allow monitoring and control of analog voltages and currents.

Question 13

The format used for data manipulation instructions is the same for all PLC models.

Question 14

The analog input module contains a digital-to-analog converter circuit.

Question 15

The data contained in words will be in the form of binary bits represented as series of 1s and 0s.

Question 16

Multibit interfaces are used to accommodate devices that require BCD input or outputs.

Question 17

The analog output interface module receives numerical data from the processor that is translated into a proportional voltage or current.

Question 18

A consecutive group of data memory words may be referred to as either a table or a file.

Question 19

The move with mask instruction uses a mask to filter out bits that are not to be transferred from the source to the destination.

Question 20

The words of data memory in singular form may be referred to as either words or registers.

Question 21

A value of 150 stored in N7:2 would make this instruction true.

Question 22

The instruction shown signifies a file to file FAL copy operation.

Question 23

The COP instruction operates at a lower speed than the same operation that uses the FAL instruction.

Question 24

A value of 50 stored in N7:2 of would make this instruction true.

Question 25

A value of 9 stored in N7:2 would make this instruction true.

Question 26

A value of 20 stored in N7:2 would make this instruction true.

Question 27

Data manipulation instructions enable the PLC to:

A)move data from one memory area to another.
B)compare data.
C)take on some of the qualities of a computer.
D)all of these.

Question 28

Files allow large amounts of data to be scanned quickly.

Question 29

Depending on the manufacturer, which of the following might be considered the same as a word?

A)Register
B)File
C)Table
D)All of these

Question 30

A value of 88 stored in N7:2 would make this instruction true.

Question 31

PID control is inexpensive but not accurate enough for many applications.

Question 32

Each type of set-point control involves the use of some form of open loop control.

Question 33

The FLL instruction is frequently used to zero all the data in a file.

Question 34

Data transfer and data compare instructions are both output instructions.

Question 35

Input and output modules can be addressed either at the bit level or at the word level.

Question 36

To copy the value in N12:0 into N12:40 using the MOV instruction, you would enter: N12:40 as the source, and N12:0 as the destination.

Question 37

A value of 30 stored in N7:2 would make this instruction true.

Question 38

A value of zero stored in N7:2 would make this instruction true.

Question 39

The move instruction copies a value from one location to another.

Question 40

According to the memory map:

A)No.1 is a word, No.2 is a register, No.3 is a file.
B)No.1 is a register, No.2 is a bit, No.3 is a file.
C)No.1 is a file, No.2 is a bit, No.3 is a table.
D)No.1 is a bit, No.2 is a table, No.3 is a file.

Question 41

For the file copy (COP) instruction rung shown:

A)both source and destinations are file addresses.
B)when input A goes true, the values in file N40 are copied to N20.
C)both file N40 and N20 contain 6 words.
D)all of these

Question 42

Rung No. 2 tells the processor to set the preset time of the timer to:

A)15 when SS1 is open.
B)15 when SS1 is closed.
C)10 when SS1 is open.
D)10 when SS1 is closed.

Question 43

For the following masked move instruction data, the contents of the destination after the MVM went true would be:
1100 1010 0011 0110 contents of the source
1111 0000 1111 1111 contents of the mask
1010 1101 1010 1010 contents of the destination before MVM went true

A)1100 1101 001 10110
B)1010 1010 1010 1010
C)1111 0000 1111 0000
D)0000 1111 0000 1111

Question 44

For the timer program shown, the timer starts timing when:

A)PB1 is open.
B)PB1 is closed.
C)SS1 is open.
D)SS1 is closed.

Question 45

For the counter program shown, the counter increments by one for each false-to-true transition of:

A)rung No.1.
B)rung No.2.
C)rung No.3.
D)rung No.4.

Question 46

The logic rung shown is an example of a:

A)data compare instruction.
B)data move instruction.
C)timer instruction.
D)counter instruction.

Question 47

For the light to come on after an accumulated count of 175:

A)rung No.3 must be true.
B)rungs No.2, No.3, and No.4 must be true.
C)rungs No.1, No.2, and No.6 must be true.
D)rungs No.1, No.2, No.4, and No.6 must be true.

Question 48

Source A of the GREATER THAN OR EQUAL instructions contains the

A)preset time value of the timer.
B)time base value of the timer.
C)reset time value of the timer.
D)accumulated time value of the timer.

Question 49

The logic rung is telling the processor to copy the data stored in word:

A)N7:30 to word N7:20 when input A is true.
B)N7:20 to word N7:30 when input A is true.
C)N7:30 to word N7:20 when input A is false.
D)N7:20 to word N7:30 when input A is false.

Question 50

The logic rung shown:

A)has logic continuity.
B)does not have logic continuity.
C)will cause output PL1 to be energized.
D)both has logic continuity and will cause output PL1 to be energized.

Question 51

The masked move instruction (MVM):

A)is an output instruction.
B)moves data through a mask to get to their destination.
C)hides a portion of a binary word before transferring it to its destination.
D)all of these.

Question 52

If input A is closed and then opened

A)15 will be stored in N7:20 and 0 in N7:30.
B)0 will be stored in N7:20 and 15 in N7:30.
C)15 will be stored in N7:20 and 15 in N7:30.
D)0 will be stored in N7:20 and 0 in N7:30.

Question 53

The illustration illustrates a:

A)word to file move.
B)file to word move.
C)file to file move.
D)file to instruction move.

Question 54

In the timer program shown, solenoid B is energized

A)as soon as the start button is pressed.
B)5 s after the start button is pressed.
C)10 s after the start button is pressed.
D)15 s after the start button is pressed.

Question 55

A preset count of 50 is selected when input ____ is closed.

A)LS 1
B)A
C)B
D)C

Question 56

When SS1 is closed, the time-delay period will be:

A)0 s.
B)5 s.
C)10 s.
D)15 s.

Question 57

Rung No. 3 will be true:

A)10 s after PB1 remains closed.
B)5 s after SS1 remains closed.
C)15 s after both PB1 and SS1 remain closed.
D)anytime SS1 is closed.

Question 58

Which of the following is not considered to be a data compare instruction?

A)LESS THAN
B)EQUAL
C)MOV
D)GREATER THAN

Question 59

A file is a group of:

A)related consecutive words.
B)unrelated consecutive words.
C)related instructions.
D)unrelated instructions.

Question 60

Output PL1, of the logic rung shown, will be true when the value of the number stored in word N7:10 is:

A)less than 80.
B)greater than 80.
C)equal to 80.
D)equal to or greater than 80.

Question 61

The move instruction copies data from a ____ word to a ____ word.

A)source, destination
B)destination, source
C)integer, floating point
D)floating point, integer

Question 62

Output PL1 will be true when the accumulated value of the counter is:

A)equal to 50.
B)equal to 20.
C)between 0 and 19.
D)between 20 and 50.

Question 63

For the program shown, the thumbwheel switch is connected to a ____ input module.

A)BCD
B)discrete
C)PID
D)LED

Question 64

The PL output is energized when:

A)S1 is closed and the value of the TWS is 1208
B)S1 is open and the value of the TWS is 1208
C)S1 is closed and the value of the TWS is less than 1208
D)S1 is closed and the value of the TWS is greater than 1208

Question 65

For the temperature control program shown, rung No. 1 contains the logic that:

A)detects when the temperature drops below the low set point.
B)allows the thermocouple temperature to be monitored by the LED display board.
C)detects when the temperature rises above the high set point.
D)switches the heater on and off.

Question 66

For the counter program shown, source A is addressed to the:

A)pushbutton input.
B)light output.
C)done bit of the counter.
D)accumulated value of the counter.

Question 67

Rung No. 4 contains the logic that:

A)detects when the temperature drops below the low set point.
B)allows the thermocouple temperature to be monitored by the LED display board.
C)detects when the temperature rises above the high set point.
D)switches the heaters on and off.

Question 68

Bit T4:1/DN is called the:

A)reset bit.
B)done bit.
C)timing bit.
D)data compare bit.

Question 69

PID controllers produce outputs that depend on:

A)magnitude of the error signal
B)duration of the error signal
C)rate of change of the error signal
D)all of these

Question 70

Rung No. 3 contains the logic that:

A)detects when the temperature drops below the low set point.
B)allows the thermocouple temperature to be monitored by the LED display board.
C)detects when the temperature rises above the high set point.
D)switches the heaters on and off.

Question 71

The ____ mode of the FAL instruction allows one element of data to be operated on for every false-to-true transition of the instruction.

A)all
B)numeric
C)incremental
D)sequential

Question 72

Assume that the input pushbutton is pulsed 60 times after the counter had first been reset. After this operational sequence:

A)the light would be on and the accumulated count would be 10.
B)the light would be off and the accumulated count would be 10.
C)the light would be on and the accumulated count would be 60.
D)the light would be off and the accumulated count would be 60.

Question 73

In the timer program shown, when switch S1 is closed:

A)the light turns on after 20 s and remains on.
B)the light turns on after 5 s and remains on.
C)the light turns on after 15 s and remains on.
D)the light turns on after 5 s, stays on for 10 s, and then turns off.

Question 74

The MOV instruction is used to move data:

A)from the LED display to the thumbwheel switch.
B)from the thumbwheel switch to the LED display.
C)from the LED display to the PL.
D)from the LED display to the PL

Question 75

Ten seconds immediately after switch S1 is closed, rung(s) ____ will be true.

A)No.1 only
B)No.1 and No.2
C)No.1 and No.3
D)No.1, No.2, and No.3

Question 76

The LESS THAN instruction is

A)always true.
B)true as long as the value contained in source A is less than 20.
C)true as long as the value contained in source A is more than 20.
D)true as long as the value contained in source A is equal to 20.

Question 77

In a closed-loop control system, the PLC control program acts to:

A)form a closed circuit between input and output modules.
B)monitor the output signal and adjust the input signal accordingly.
C)keep the input and output in balance.
D)correct any difference between the measured value and the desired value.

Question 78

Rung No. 2 contains the logic that:

A)detects when the temperature drops below the low set point.
B)allows the thermocouple temperature to be monitored by the LED display board.
C)detects when the temperature rises above the high set point.
D)switches the heater on and off.

Question 79

The BCD value for the thumbwheel switch setting would be:

A)1010 0110 1110 1101.
B)1110 0001 1010 1010.
C)0011 0010 1000 0100.
D)0010 1010 0110 1011.

Question 80

With the masked move instruction, where there is a ____ in the mask, data will pass.

A)1
B)0
C)negative sign
D)positive sign