a. Master Control Reset (MCR) instructions: The MCR instruction is used to clear all set outputs within the fenced zone. In other words, it turns off all the non-retentive outputs in the fenced zone. Non-retentive outputs cannot retain their memory when they are de-energized. The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Question

Want to see more full solutions like this?

Answer 1

Question

Chapter 9, Problem 1RQ

Program Plan Intro

a.

Master Control Reset (MCR) instructions:

The MCR instruction is used to clear all set outputs within the fenced zone.

In other words, it turns off all the non-retentive outputs in the fenced zone.

Non-retentive outputs cannot retain their memory when they are de-energized.

The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Expert Solution

Explanation of Solution

Programming procedure:

In order to control a program section, two MCR output instructions are programmed.
The fenced zone which needs to be controlled begins with one MCR instruction and the other MCR instruction at the end.
An MCR rung with conditional inputs is placed at the beginning of the program section to be controlled.
An MCR rung with no conditional inputs is placed at the end of the program section to be controlled.
If the first MCR instruction becomes true, then all the outputs present in between the two MCR instructions will act according to the logic.
If the MCR instruction becomes false, then all the non-retentive outputs will be de-energized and all the retentive outputs will retain their previous state.

Explanation of Solution

b.

False-to-true transition:

When the MCR instruction makes a false-to-true transition, all rung outputs within the program section will be controlled by their respective input conditions.

Initially, when the MCR instruction in the rung is false, all the rungs within the zone are made inactive and de-energizes all non-retentive outputs.

Hence, all retentive devices such as latches will remain in their previous state.

Explanation of Solution

c.

True-to-false transition:

When the MCR instruction makes a true-to-false transition, all non-retentive outputs within the program section will be de-energized.

At the same time, all the retentive outputs within the fenced zone will remain in their previous state.

Initially, when the MCR instruction in the rung is true, all the rungs within the zone are scanned and the outputs are energized and updated based on their logic.

When the MCR instruction undergoes a transition from true-to-false, the scan ignores the input and de-energizes all the non-retentive outputs.

Hence, all the retentive devices like latches, timers will remain in their previous state.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

A notice is recorded on VA page 30 if an instruction is denied. Why does this matter? A TLB controlled by software would operate more quickly than one controlled by hardware in the following scenarios:

What would occur if an instruction were to be disregarded? A software-managed TLB is speedier than a hardware-managed TLB in the following situations:

If an instruction is not accepted and it writes to VA page 30, what will happen? A TLB that is handled by software would perform better than a TLB that is controlled by hardware in the following situations:

Answer 2

Question

Chapter 9, Problem 1RQ

Program Plan Intro

a.

Master Control Reset (MCR) instructions:

The MCR instruction is used to clear all set outputs within the fenced zone.

In other words, it turns off all the non-retentive outputs in the fenced zone.

Non-retentive outputs cannot retain their memory when they are de-energized.

The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Expert Solution

Explanation of Solution

Programming procedure:

In order to control a program section, two MCR output instructions are programmed.
The fenced zone which needs to be controlled begins with one MCR instruction and the other MCR instruction at the end.
An MCR rung with conditional inputs is placed at the beginning of the program section to be controlled.
An MCR rung with no conditional inputs is placed at the end of the program section to be controlled.
If the first MCR instruction becomes true, then all the outputs present in between the two MCR instructions will act according to the logic.
If the MCR instruction becomes false, then all the non-retentive outputs will be de-energized and all the retentive outputs will retain their previous state.

Explanation of Solution

b.

False-to-true transition:

When the MCR instruction makes a false-to-true transition, all rung outputs within the program section will be controlled by their respective input conditions.

Initially, when the MCR instruction in the rung is false, all the rungs within the zone are made inactive and de-energizes all non-retentive outputs.

Hence, all retentive devices such as latches will remain in their previous state.

Explanation of Solution

c.

True-to-false transition:

When the MCR instruction makes a true-to-false transition, all non-retentive outputs within the program section will be de-energized.

At the same time, all the retentive outputs within the fenced zone will remain in their previous state.

Initially, when the MCR instruction in the rung is true, all the rungs within the zone are scanned and the outputs are energized and updated based on their logic.

When the MCR instruction undergoes a transition from true-to-false, the scan ignores the input and de-energizes all the non-retentive outputs.

Hence, all the retentive devices like latches, timers will remain in their previous state.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Question

Chapter 9, Problem 1RQ

Program Plan Intro

a.

Master Control Reset (MCR) instructions:

The MCR instruction is used to clear all set outputs within the fenced zone.

In other words, it turns off all the non-retentive outputs in the fenced zone.

Non-retentive outputs cannot retain their memory when they are de-energized.

The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Expert Solution

Explanation of Solution

Programming procedure:

In order to control a program section, two MCR output instructions are programmed.
The fenced zone which needs to be controlled begins with one MCR instruction and the other MCR instruction at the end.
An MCR rung with conditional inputs is placed at the beginning of the program section to be controlled.
An MCR rung with no conditional inputs is placed at the end of the program section to be controlled.
If the first MCR instruction becomes true, then all the outputs present in between the two MCR instructions will act according to the logic.
If the MCR instruction becomes false, then all the non-retentive outputs will be de-energized and all the retentive outputs will retain their previous state.

Explanation of Solution

b.

False-to-true transition:

When the MCR instruction makes a false-to-true transition, all rung outputs within the program section will be controlled by their respective input conditions.

Initially, when the MCR instruction in the rung is false, all the rungs within the zone are made inactive and de-energizes all non-retentive outputs.

Hence, all retentive devices such as latches will remain in their previous state.

Explanation of Solution

c.

True-to-false transition:

When the MCR instruction makes a true-to-false transition, all non-retentive outputs within the program section will be de-energized.

At the same time, all the retentive outputs within the fenced zone will remain in their previous state.

Initially, when the MCR instruction in the rung is true, all the rungs within the zone are scanned and the outputs are energized and updated based on their logic.

When the MCR instruction undergoes a transition from true-to-false, the scan ignores the input and de-energizes all the non-retentive outputs.

Hence, all the retentive devices like latches, timers will remain in their previous state.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Question

Chapter 9, Problem 1RQ

Program Plan Intro

a.

Master Control Reset (MCR) instructions:

The MCR instruction is used to clear all set outputs within the fenced zone.

In other words, it turns off all the non-retentive outputs in the fenced zone.

Non-retentive outputs cannot retain their memory when they are de-energized.

The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Expert Solution

Explanation of Solution

Programming procedure:

In order to control a program section, two MCR output instructions are programmed.
The fenced zone which needs to be controlled begins with one MCR instruction and the other MCR instruction at the end.
An MCR rung with conditional inputs is placed at the beginning of the program section to be controlled.
An MCR rung with no conditional inputs is placed at the end of the program section to be controlled.
If the first MCR instruction becomes true, then all the outputs present in between the two MCR instructions will act according to the logic.
If the MCR instruction becomes false, then all the non-retentive outputs will be de-energized and all the retentive outputs will retain their previous state.

Explanation of Solution

b.

False-to-true transition:

When the MCR instruction makes a false-to-true transition, all rung outputs within the program section will be controlled by their respective input conditions.

Initially, when the MCR instruction in the rung is false, all the rungs within the zone are made inactive and de-energizes all non-retentive outputs.

Hence, all retentive devices such as latches will remain in their previous state.

Explanation of Solution

c.

True-to-false transition:

When the MCR instruction makes a true-to-false transition, all non-retentive outputs within the program section will be de-energized.

At the same time, all the retentive outputs within the fenced zone will remain in their previous state.

Initially, when the MCR instruction in the rung is true, all the rungs within the zone are scanned and the outputs are energized and updated based on their logic.

When the MCR instruction undergoes a transition from true-to-false, the scan ignores the input and de-energizes all the non-retentive outputs.

Hence, all the retentive devices like latches, timers will remain in their previous state.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Chapter 9, Problem 1RQ

Program Plan Intro

a.

Master Control Reset (MCR) instructions:

The MCR instruction is used to clear all set outputs within the fenced zone.

In other words, it turns off all the non-retentive outputs in the fenced zone.

Non-retentive outputs cannot retain their memory when they are de-energized.

The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Expert Solution

Explanation of Solution

Programming procedure:

In order to control a program section, two MCR output instructions are programmed.
The fenced zone which needs to be controlled begins with one MCR instruction and the other MCR instruction at the end.
An MCR rung with conditional inputs is placed at the beginning of the program section to be controlled.
An MCR rung with no conditional inputs is placed at the end of the program section to be controlled.
If the first MCR instruction becomes true, then all the outputs present in between the two MCR instructions will act according to the logic.
If the MCR instruction becomes false, then all the non-retentive outputs will be de-energized and all the retentive outputs will retain their previous state.

Explanation of Solution

b.

False-to-true transition:

When the MCR instruction makes a false-to-true transition, all rung outputs within the program section will be controlled by their respective input conditions.

Initially, when the MCR instruction in the rung is false, all the rungs within the zone are made inactive and de-energizes all non-retentive outputs.

Hence, all retentive devices such as latches will remain in their previous state.

Explanation of Solution

c.

True-to-false transition:

When the MCR instruction makes a true-to-false transition, all non-retentive outputs within the program section will be de-energized.

At the same time, all the retentive outputs within the fenced zone will remain in their previous state.

Initially, when the MCR instruction in the rung is true, all the rungs within the zone are scanned and the outputs are energized and updated based on their logic.

When the MCR instruction undergoes a transition from true-to-false, the scan ignores the input and de-energizes all the non-retentive outputs.

Hence, all the retentive devices like latches, timers will remain in their previous state.

Answer 6

Chapter 9, Problem 1RQ

Program Plan Intro

a.

Master Control Reset (MCR) instructions:

The MCR instruction is used to clear all set outputs within the fenced zone.

In other words, it turns off all the non-retentive outputs in the fenced zone.

Non-retentive outputs cannot retain their memory when they are de-energized.

The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Expert Solution

Explanation of Solution

Programming procedure:

In order to control a program section, two MCR output instructions are programmed.
The fenced zone which needs to be controlled begins with one MCR instruction and the other MCR instruction at the end.
An MCR rung with conditional inputs is placed at the beginning of the program section to be controlled.
An MCR rung with no conditional inputs is placed at the end of the program section to be controlled.
If the first MCR instruction becomes true, then all the outputs present in between the two MCR instructions will act according to the logic.
If the MCR instruction becomes false, then all the non-retentive outputs will be de-energized and all the retentive outputs will retain their previous state.

Answer 7

Chapter 9, Problem 1RQ

Program Plan Intro

a.

Master Control Reset (MCR) instructions:

The MCR instruction is used to clear all set outputs within the fenced zone.

In other words, it turns off all the non-retentive outputs in the fenced zone.

Non-retentive outputs cannot retain their memory when they are de-energized.

The MCR instruction within the zone are still scanned, but the scan time is reduced due to the false state of non-retentive outputs.

Answer 8

Expert Solution

Explanation of Solution

Programming procedure:

In order to control a program section, two MCR output instructions are programmed.
The fenced zone which needs to be controlled begins with one MCR instruction and the other MCR instruction at the end.
An MCR rung with conditional inputs is placed at the beginning of the program section to be controlled.
An MCR rung with no conditional inputs is placed at the end of the program section to be controlled.
If the first MCR instruction becomes true, then all the outputs present in between the two MCR instructions will act according to the logic.
If the MCR instruction becomes false, then all the non-retentive outputs will be de-energized and all the retentive outputs will retain their previous state.