OpenPLC-with-LDmicro/C3/Move-Instruction/English - Revision history

Nirmala Venkat: Created page with " {| style="border-spacing:0;" | style="border:1pt solid #000000;padding:0.176cm;"| '''Visual Cue''' | style="border:1pt solid #000000;padding:0.176cm;"|
2021-07-07T10:07:38Z

Created page with " {| style="border-spacing:0;" | style="border:1pt solid #000000;padding:0.176cm;"| <center>'''Visual Cue'''</center> | style="border:1pt solid #000000;padding:0.176cm;"| <cent..."

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{| style="border-spacing:0;"
| style="border:1pt solid #000000;padding:0.176cm;"| <center>'''Visual Cue'''</center>
| style="border:1pt solid #000000;padding:0.176cm;"| <center>'''Narration'''</center>

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 1:
| style="border:1pt solid #000000;padding:0.176cm;"| Welcome to the spoken tutorial on '''Move Instruction.'''

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 2: Learning Objectives

* Move (MOV) instruction

| style="border:1pt solid #000000;padding:0.176cm;"| In this tutorial, we will learn about working of '''Move''' instruction

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 3: System Requirements

* Ubuntu Linux 18.04''' '''OS
* LDmicro

| style="border:1pt solid #000000;padding:0.176cm;"| To record this tutorial I am using:

* '''Ubuntu Linux 18.04''' operating system
* '''LDmicro'''
|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 4: Pre-requisites

* Working of '''One Shot''' and '''Arithmetic''' instructions.
* If not, please refer to the relevant tutorials from [https://spoken-tutorial.org/ Home | spoken-tutorial.org]

| style="border:1pt solid #000000;padding:0.176cm;"|
* To follow this tutorial, you should know the working of

# '''One Shot''' and
# '''Arithmetic''' instructions.

* If not, please refer to the relevant tutorials in this series on this website.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 5: MOV instruction

MOV instruction copies the value of the source variable to the destination variable.
| style="border:1pt solid #000000;padding:0.176cm;"| '''MOV''' instruction copies the value of the source '''variable''' to the destination '''variable'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| Let us see the working of '''Move''' instruction in '''LDmicro'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Open LDmicro
| style="border:1pt solid #000000;padding:0.176cm;"| Open '''LDmicro'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| We will create a '''virtual counter''' in this tutorial.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Click Instructions -> Insert Contact >> Place the cursor to the right of the contact >> Click instructions -> Insert OSR >> Place the cursor to the right of OSR >> Click Instructions -> Arithmetic instructions -> Insert ADD
| style="border:1pt solid #000000;padding:0.176cm;"| Please follow the steps as shown here.

First, insert a '''Contact.'''

To the right of it, insert an '''OSR'''.

Next, insert '''ADD''' instruction to the right of '''OSR.'''

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double-click on the contact >> Type switch in the name box >> Click OK button
| style="border:1pt solid #000000;padding:0.176cm;"| Rename the '''Contact''' as '''‘switch’'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double click on ADD
| style="border:1pt solid #000000;padding:0.176cm;"| Double click on the '''ADD''' instruction.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Type in the destination and ‘is set as := ‘ columns ‘vcounter’
| style="border:1pt solid #000000;padding:0.176cm;"| Set the destination and first '''operand''' to '''‘vcounter’.'''

'''‘vcounter’''' means '''virtual counter'''.
|-
| style="border:1pt solid #000000;padding:0.176cm;"| Type 1 in ‘+:’ in the column >> Click the OK button.
| style="border:1pt solid #000000;padding:0.176cm;"| Second '''operand''' is by default 1.

Don’t change it.

Click the '''OK''' button.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| We will now check the working of this '''logic'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Click ‘Simulate -> Simulation mode’ >> Click ‘Simulate -> Real-time simulation’
| style="border:1pt solid #000000;padding:0.176cm;"| Let us turn '''ON''' the '''simulation mode'''.

For that, click '''Simulate''' and then on '''Simulation mode.'''

Next, start '''real-time simulation''' as shown.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Highlight column state in the I/O list
| style="border:1pt solid #000000;padding:0.176cm;"| Observe the state of '''Xswitch''' and '''vcounter''' in the '''I/O list'''.

Initially the state of '''Xswitch''' and '''vcounter''' are 0.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double-click on Xswitch in the I/O list
| style="border:1pt solid #000000;padding:0.176cm;"| Change the state of '''Xswitch''' to 1.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Highlight the state of vcounter

Double-click on Xswitch in the IO list
| style="border:1pt solid #000000;padding:0.176cm;"| We can observe the state of '''‘vcounter’''' changes from 0 to 1.

Change the state of '''Xswitch''' to 0.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double-click on Xswitch in the I/O list
| style="border:1pt solid #000000;padding:0.176cm;"| Again change the state of '''Xswitch''' to 1.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Highlight the state of vcounter
| style="border:1pt solid #000000;padding:0.176cm;"| We can observe the state of '''‘vcounter’''' changes to 2.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| This means that ‘'''vcounter’''' has the count of number of '''switch''' presses.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| Just like a '''counter''' which tracks the number of '''switch''' presses.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| What if we want to '''reset''' the count?

Let us see how to '''reset''' this count value.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Click on Simulate >> Click on Halt simulation Click on Simulate >> Click on Simulation Mode
| style="border:1pt solid #000000;padding:0.176cm;"| Turn '''OFF''' the '''simulation mode'''.

For that, click '''Simulate''' and then on '''Halt Simulation.'''

Then click '''Simulate''' and '''Simulation Mode.'''

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Click Edit -> Insert Rung after
| style="border:1pt solid #000000;padding:0.176cm;"| Insert a '''rung''' below as shown.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Place the cursor in the new rung >> Click Instructions -> Insert Contact >> place the cursor to the right of the contact >> Click Instructions -> Insert MOV
| style="border:1pt solid #000000;padding:0.176cm;"| Next we have to insert a '''Contact''' and '''MOV''' instruction in the new '''rung'''.

For that, place the cursor in the new '''rung'''.

Click on '''Instructions''' and then '''Insert Contact.'''

Place the cursor to the right of the '''Contact'''.

Click on '''Instructions''' and then''' Insert MOV'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double-click on the contact >> Type reset in the name box >> Click OK button
| style="border:1pt solid #000000;padding:0.176cm;"| Rename the '''Contact''' as '''‘reset’.'''

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double-click on the MOV instruction >> Type vcounter in the destination column >> Type 0 in the source column >> Click the OK button
| style="border:1pt solid #000000;padding:0.176cm;"| Double click on the '''MOV''' instruction.

Set the '''Destination variable''' as '''‘vcounter’''' and '''Source variable''' as 0.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| Again start '''real-time simulation''' as shown.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double click on Xswitch in the I/O list for 6 times.
| style="border:1pt solid #000000;padding:0.176cm;"| Increase the count value, that is, the value of '''‘vcounter’''' to 2.

It can be done by changing the state of '''Xswitch''' from 0 to 1 for 2 times.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Double-click on Xreset in the I/O list
| style="border:1pt solid #000000;padding:0.176cm;"| Now change the state of '''‘Xreset’''' to 1.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Highlight the state of vcounter
| style="border:1pt solid #000000;padding:0.176cm;"| We can observe the value of '''‘vcounter’''' changes to 0.

Just like '''resetting''' a '''counter'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| Thus, '''Move''' instruction copies the value of source to destination '''variable'''.

Remember that source can be a '''variable''' too.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Click on Simulate >> Click on Halt simulation Click on Simulate >> Click on Simulation Mode
| style="border:1pt solid #000000;padding:0.176cm;"| Turn '''OFF''' the '''simulation mode''' as shown.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Click on File >> Click on Save >> Go to Desktop/LDmicro folder >> Rename it as ‘move.ld’ >> Click on Save
| style="border:1pt solid #000000;padding:0.176cm;"| Save the '''ladder diagram''' as '''move.ld'''.

|-
| style="border:1pt solid #000000;padding:0.176cm;"|
| style="border:1pt solid #000000;padding:0.176cm;"| This brings us to the end of this tutorial.

Let us summarize

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 6: Summary

In this tutorial, we learnt about working of

* Move (MOV) instruction

| style="border:1pt solid #000000;padding:0.176cm;"| In this tutorial, we learnt about working of '''Move''' instruction
|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 7: Evaluation

# Destination can be either a variable or a constant.

* True
* False

# Source can be either a variable or a constant.

* True
* False

| style="border:1pt solid #000000;padding:0.176cm;"| Here are some self assessment questions for you.

1 .Destination can be either a '''variable''' or a '''constant'''

True or False

2. Source can be either a '''variable''' or a '''constant'''.

True or False

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 8: Answers

1 - False

2 - True
| style="border:1pt solid #000000;padding:0.176cm;"| Now let us look at the answers.

The answer to the first question is False.

The answer to the second question is True.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 9:

About Spoken Tutorial project
| style="border:1pt solid #000000;padding:0.176cm;"| The video at the following link summarises the Spoken Tutorial project.

Please download and watch it.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 10:

Spoken Tutorial workshops
| style="border:1pt solid #000000;padding:0.176cm;"| The''' Spoken Tutorial Project''' team:

* conducts workshops using spoken tutorials and
* gives certificates on passing online tests.

For more details, please write to us

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 11:

Forum for specific questions:
| style="border:1pt solid #000000;padding:0.176cm;"| * Please post your timed queries in this forum.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 12:

Forum for specific questions:
| style="border:1pt solid #000000;padding:0.176cm;"| Do you have any general / technical questions on OpenPLC?

Please visit the FOSSEE forum and post your question.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 13:

Acknowledgement
| style="border:1pt solid #000000;padding:0.176cm;"| Spoken Tutorial Project is funded by MHRD, Government of India.

|-
| style="border:1pt solid #000000;padding:0.176cm;"| Slide 14:

Thank you slide
| style="border:1pt solid #000000;padding:0.176cm;"| This tutorial has been contributed by FOSSEE and Spoken Tutorial Project, IIT Bombay.

And this is Harsha Priyanka from FOSSEE team, signing off.

Thanks for watching.

|}