Difference between revisions of "OpenPLC-version1-with-LDmicro/C2/OpenPLC-version-1-Main-board/English"

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(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:1pt solid #000000;padding:0.176cm;"| To record this tutorial I am using:
 
| style="border:1pt solid #000000;padding:0.176cm;"| To record this tutorial I am using:
  
* '''OpenPLC''' version 1 Main board
+
* '''OpenPLC version 1 Main board'''
 
* 24V, 2A '''SMPS'''
 
* 24V, 2A '''SMPS'''
 
* '''USBasp''' programmer
 
* '''USBasp''' programmer
Line 46: Line 46:
 
| style="border:1pt solid #000000;padding:0.176cm;"|  
 
| style="border:1pt solid #000000;padding:0.176cm;"|  
 
* '''OpenPLC''' is an affordable, open source & modular hardware developed at '''IIT Bombay''' by '''FOSSEE''' team.
 
* '''OpenPLC''' is an affordable, open source & modular hardware developed at '''IIT Bombay''' by '''FOSSEE''' team.
* This board is flexible and can be interfaced with any electronic module available in the market.
+
* This '''board''' is flexible and can be interfaced with any '''electronic module''' available in the market.
  
 
|-
 
|-
 
| style="border:1pt solid #000000;padding:0.176cm;"| Development-board.png
 
| style="border:1pt solid #000000;padding:0.176cm;"| Development-board.png
| style="border:1pt solid #000000;padding:0.176cm;"| This is a picture of '''OpenPLC''' '''version 1 Main board.'''
+
| style="border:1pt solid #000000;padding:0.176cm;"| This is a picture of '''OpenPLC version 1 Main board.'''
  
 
|-
 
|-
 
| style="border:1pt solid #000000;padding:0.176cm;"| power-unit.png
 
| style="border:1pt solid #000000;padding:0.176cm;"| power-unit.png
| style="border:1pt solid #000000;padding:0.176cm;"| This highlighted section is the power unit of the board.
+
| style="border:1pt solid #000000;padding:0.176cm;"| This highlighted section is the '''power unit''' of the '''board'''.
  
It is further subdivided into input and output power sections.
+
It is further subdivided into '''input''' and '''output power sections'''.
 
+
|-
+
  
 
|-
 
|-
Line 65: Line 63:
 
input-power-unit.png
 
input-power-unit.png
  
| style="border:1pt solid #000000;padding:0.176cm;"| We will now take a look at the input power section of the board.
+
| style="border:1pt solid #000000;padding:0.176cm;"| We will now take a look at the '''input power section''' of the '''board'''.
  
The board must be powered using 24 volt '''DC''' power supply.
+
The '''board''' must be powered using 24 volt '''DC''' power supply.
  
 
The 24 volt and 12 volt connections are capable of handling upto 2 amperes of current.
 
The 24 volt and 12 volt connections are capable of handling upto 2 amperes of current.
Line 75: Line 73:
  
 
(input-power-unit.png)
 
(input-power-unit.png)
| style="border:1pt solid #000000;padding:0.176cm;"| The on board 24V input power terminals are shown on your screen marked '''GND '''which is ground, and '''24V'''.
+
| style="border:1pt solid #000000;padding:0.176cm;"| The on '''board 24V input power terminals''' are shown on your screen marked '''GND '''which is '''ground''', and '''24V'''.
  
 
|-
 
|-
Line 85: Line 83:
  
 
(SMPS-front.jpg)
 
(SMPS-front.jpg)
| style="border:1pt solid #000000;padding:0.176cm;"| We have to connect line, neutral and ground terminals of 3-pin '''AC''' power cord to '''SMPS'''.
+
| style="border:1pt solid #000000;padding:0.176cm;"| We have to '''connect line, neutral''' and '''ground terminals''' of 3-pin '''AC''' power cord to '''SMPS'''.
  
Make sure that you identify the terminals of 3-pin '''AC''' power cord correctly.
+
Make sure that you identify the '''terminals''' of 3-pin '''AC''' power cord correctly.
  
 
|-
 
|-
Line 93: Line 91:
  
 
(input-power-connections.png)
 
(input-power-connections.png)
| style="border:1pt solid #000000;padding:0.176cm;"| Connect the +V and -V ends of the '''SMPS''' to '''24V''' and '''GND''' of the main board as shown here.
+
| style="border:1pt solid #000000;padding:0.176cm;"| Connect the '''+V''' and '''-V''' ends of the '''SMPS''' to '''24V''' and '''GND''' of the main '''board''' as shown here.
  
 
|-
 
|-
Line 121: Line 119:
 
|-
 
|-
 
| style="border:1pt solid #000000;padding:0.176cm;"| D2-glow.jpg
 
| style="border:1pt solid #000000;padding:0.176cm;"| D2-glow.jpg
| style="border:1pt solid #000000;padding:0.176cm;"| Make sure that the '''D2 LED''' is glowing on your board which indicates that the board is powered up.
+
| style="border:1pt solid #000000;padding:0.176cm;"| Make sure that the '''D2 LED''' is glowing on your '''board''' which indicates that the '''board''' is powered up.
  
 
|-
 
|-
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<nowiki><output-power-pins.png with labels></nowiki>
 
<nowiki><output-power-pins.png with labels></nowiki>
  
| style="border:1pt solid #000000;padding:0.176cm;"| We will now take a look at the output power section.
+
| style="border:1pt solid #000000;padding:0.176cm;"| We will now take a look at the '''output power''' section.
  
'''24, 12, 5 V and Ground '''outputs are provided for connections with external modules.
+
'''24, 12, 5 V''' and '''Ground outputs''' are provided for connections with '''external modules.'''
  
The connections are provided through 4 different types of connectors, they are:
+
The connections are provided through 4 different types of '''connectors'''. They are:
  
 
* '''Relimate'''
 
* '''Relimate'''
Line 143: Line 141:
 
(output-power-pins.png)
 
(output-power-pins.png)
  
| style="border:1pt solid #000000;padding:0.176cm;"| There are 4 '''relimate''' connectors on the board as marked in the picture.
+
| style="border:1pt solid #000000;padding:0.176cm;"| There are 4 '''relimate connectors''' on the '''board''' as marked in the picture.
  
Most of the modules developed by''' FOSSEE '''will be compatible with these connectors.
+
Most of the '''modules''' developed by''' FOSSEE '''will be compatible with these '''connectors'''.
  
 
|-
 
|-
Line 157: Line 155:
  
 
output-power-pins.png
 
output-power-pins.png
| style="border:1pt solid #000000;padding:0.176cm;"| Some external modules in the market are available with either male or female berg connections.
+
| style="border:1pt solid #000000;padding:0.176cm;"| Some '''external modules''' in the market are available with either '''male''' or '''female berg''' connections.
  
In order to accommodate both types of modules, we have male as well as female connectors.
+
In order to accommodate both types of '''modules''', we have '''male''' as well as '''female''' connectors.
  
 
|-
 
|-
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(Development-board.png)
 
(Development-board.png)
| style="border:1pt solid #000000;padding:0.176cm;"| At the heart of the main board is '''ATMega16''' microcontroller.
+
| style="border:1pt solid #000000;padding:0.176cm;"| At the heart of the main '''board''' is '''ATMega16 microcontroller.'''
  
 
|-
 
|-
 
| style="border:1pt solid #000000;padding:0.176cm;"|  
 
| style="border:1pt solid #000000;padding:0.176cm;"|  
| style="border:1pt solid #000000;padding:0.176cm;"| The microcontroller has 4 ports namely '''PORTA''', '''PORTB''', '''PORTC''' and '''PORTD'''.  
+
| style="border:1pt solid #000000;padding:0.176cm;"| The '''microcontroller''' has 4 ports namely '''PORTA, PORTB, PORTC''' and '''PORTD'''.  
  
These ports may be configured to use as a digital input or digital output as desired.
+
These '''ports''' may be configured to use as a '''digital input''' or '''digital output''' as desired.
  
 
|-
 
|-
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| style="border:1pt solid #000000;padding:0.176cm;"| '''Port A''' can be accessed from pin 0 to 7 through this section as labelled.
 
| style="border:1pt solid #000000;padding:0.176cm;"| '''Port A''' can be accessed from pin 0 to 7 through this section as labelled.
  
'''Port A''' can also be configured as analog inputs.
+
'''Port A''' can also be configured as '''analog inputs'''.
  
 
|-
 
|-
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| style="border:1pt solid #000000;padding:0.176cm;"| The 4 pins marked doesn’t belong to '''Port A'''.  
 
| style="border:1pt solid #000000;padding:0.176cm;"| The 4 pins marked doesn’t belong to '''Port A'''.  
  
They are output power pins as described before.
+
They are '''output power pins''' as described before.
  
 
|-
 
|-
Line 203: Line 201:
  
 
(portD.png)
 
(portD.png)
| style="border:1pt solid #000000;padding:0.176cm;"| We can connect external inputs or outputs to the board in either of the 3 ways:
+
| style="border:1pt solid #000000;padding:0.176cm;"| We can connect external '''inputs''' or '''outputs''' to the '''board''' in either of the 3 ways:
  
* Female berg connectors or
+
* '''Female berg''' connectors or
* Male berg connectors  
+
* '''Male berg''' connectors  
* Screw terminals.
+
* '''Screw terminals'''.
  
 
|-
 
|-
 
| style="border:1pt solid #000000;padding:0.176cm;"| reset.png
 
| style="border:1pt solid #000000;padding:0.176cm;"| reset.png
| style="border:1pt solid #000000;padding:0.176cm;"| We can reset the program in the microcontroller using the '''RESET''' button.
+
| style="border:1pt solid #000000;padding:0.176cm;"| We can reset the program in the '''microcontroller''' using the '''RESET''' button.
  
Pressing the '''RESET''' button will only reset the state of program variables.
+
Pressing the '''RESET''' button will only reset the state of '''program variables'''.
  
It will not erase the program from the microcontroller.
+
It will not erase the program from the '''microcontroller'''.
  
 
|-
 
|-
 
| style="border:1pt solid #000000;padding:0.176cm;"| ISP-header.png
 
| style="border:1pt solid #000000;padding:0.176cm;"| ISP-header.png
| style="border:1pt solid #000000;padding:0.176cm;"| This is a standard '''ISP header''' to program the microcontroller.
+
| style="border:1pt solid #000000;padding:0.176cm;"| This is a standard '''ISP header''' to program the '''microcontroller'''.
  
We can connect an external programmer to this header and program the controller.
+
We can connect an external '''programmer''' to this header and program the '''controller'''.
  
 
|-
 
|-
Line 237: Line 235:
  
 
Highlight status LEDs  
 
Highlight status LEDs  
| style="border:1pt solid #000000;padding:0.176cm;"| The '''UART''' pins along with 5V and GND are provided to attach an external UART module.
+
| style="border:1pt solid #000000;padding:0.176cm;"| The '''UART''' pins along with '''5V''' and '''GND''' are provided to attach an external '''UART module'''.
  
 
The pin arrangements are shown in the picture.
 
The pin arrangements are shown in the picture.
  
There are two status leds near the header to notify communication status.
+
There are two '''status LEDs''' near the header to notify '''communication status'''.
  
 
|-
 
|-
Line 248: Line 246:
 
Points to remember:
 
Points to remember:
  
* Most of the modules developed by FOSSEE run on 12 volts
+
* Most of the '''modules''' developed by '''FOSSEE''' run on 12 volts
 
* 24 volt connection is also provided  
 
* 24 volt connection is also provided  
  
Line 254: Line 252:
 
| style="border:1pt solid #000000;padding:0.176cm;"| Points to remember:
 
| style="border:1pt solid #000000;padding:0.176cm;"| Points to remember:
  
* Almost all the modules developed by FOSSEE are designed to work with 12 volts.
+
* Almost all the '''modules''' developed by '''FOSSEE''' are designed to work with 12 volts.
* But since most '''PLC''' modules operate on 24 volts, we are providing an option to access 24V on board.
+
* But since most '''PLC modules''' operate on 24 volts, we are providing an option to access '''24V''' on '''board'''.
  
 
|-
 
|-
Line 301: Line 299:
  
 
Forum questions:
 
Forum 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;"| Please post your timed queries in this forum.  
  
 
|-
 
|-

Latest revision as of 15:33, 6 April 2020

Visual Cue
Narration
Slide 1: Welcome to the spoken tutorial on OpenPLC version 1 Main board.
Slide 2:

Learning Objectives

  • Various Components on OpenPLC version 1 Main board
In this tutorial, we will learn about
  • Various components of OpenPLC version 1 Main board
Slide 3:

System Requirements

  • OpenPLC version 1 Main board
  • 24V, 2A SMPS
  • USBasp programmer
  • Ubuntu Linux 18.04 operating system
To record this tutorial I am using:
  • OpenPLC version 1 Main board
  • 24V, 2A SMPS
  • USBasp programmer
  • Ubuntu Linux 18.04 operating system
Slide 4:

OpenPLC hardware

  • Affordable, open source and modular hardware
  • Flexible and can be interfaced with any electronic module
  • OpenPLC is an affordable, open source & modular hardware developed at IIT Bombay by FOSSEE team.
  • This board is flexible and can be interfaced with any electronic module available in the market.
Development-board.png This is a picture of OpenPLC version 1 Main board.
power-unit.png This highlighted section is the power unit of the board.

It is further subdivided into input and output power sections.

Input Power Section:

input-power-unit.png

We will now take a look at the input power section of the board.

The board must be powered using 24 volt DC power supply.

The 24 volt and 12 volt connections are capable of handling upto 2 amperes of current.

Highlight input power screw terminals

(input-power-unit.png)

The on board 24V input power terminals are shown on your screen marked GND which is ground, and 24V.
SMPS.jpg We are using a 24V, 2A SMPS for power supply.
Highlight L, N, GND

(SMPS-front.jpg)

We have to connect line, neutral and ground terminals of 3-pin AC power cord to SMPS.

Make sure that you identify the terminals of 3-pin AC power cord correctly.

Highlight -V, +V

(input-power-connections.png)

Connect the +V and -V ends of the SMPS to 24V and GND of the main board as shown here.
wrong-connection.jpg While making connections, make sure that exposed metal from the wire is not protruding out.
wrong-connection.jpg This is a wrong way to connect a wire.
wrong-connection.jpg We should not connect the wires in this fashion as this may cause electrical shorts later on.
correct-connection.jpg This is a right way to connect a wire.

Tighten the screws properly.

Tug the wire moderately to ensure that they are secured in place.

After making all the connections properly, turn on the power supply.
D2-glow.jpg Make sure that the D2 LED is glowing on your board which indicates that the board is powered up.
Output power section:

<output-power-pins.png with labels>

We will now take a look at the output power section.

24, 12, 5 V and Ground outputs are provided for connections with external modules.

The connections are provided through 4 different types of connectors. They are:

  • Relimate
  • Male berg strip
  • Female berg strip
  • Screw terminal
Highlight relimate connectors

(output-power-pins.png)

There are 4 relimate connectors on the board as marked in the picture.

Most of the modules developed by FOSSEE will be compatible with these connectors.

Highlight relimate connectors

(output-power-pins.png)

These will be easier to access with multi strand cables, if you do not have single strand cables.
Highlight female and male connectors

output-power-pins.png

Some external modules in the market are available with either male or female berg connections.

In order to accommodate both types of modules, we have male as well as female connectors.

Highlight microcontroller

(Development-board.png)

At the heart of the main board is ATMega16 microcontroller.
The microcontroller has 4 ports namely PORTA, PORTB, PORTC and PORTD.

These ports may be configured to use as a digital input or digital output as desired.

portA.png Port A can be accessed from pin 0 to 7 through this section as labelled.

Port A can also be configured as analog inputs.

Highlight 4 pins beside port A

(portA.png)

The 4 pins marked doesn’t belong to Port A.

They are output power pins as described before.

portB.png Port B can be accessed from pin 0 to 7 through this section as labelled.
portC.png Similarly, PORT C
portD.png And PORT D
Highlight female, male berg connectors and screw terminals(separately)

(portD.png)

We can connect external inputs or outputs to the board in either of the 3 ways:
  • Female berg connectors or
  • Male berg connectors
  • Screw terminals.
reset.png We can reset the program in the microcontroller using the RESET button.

Pressing the RESET button will only reset the state of program variables.

It will not erase the program from the microcontroller.

ISP-header.png This is a standard ISP header to program the microcontroller.

We can connect an external programmer to this header and program the controller.

ISP-connection1.jpg

ISP-connection2.jpg

To connect the header, simply match the notch on the ISP cable with the groove in the header as shown.

The programmer shown in this tutorial is an USBasp programmer.

UART.png

(Highlight UART pins with red box)

Highlight status LEDs

The UART pins along with 5V and GND are provided to attach an external UART module.

The pin arrangements are shown in the picture.

There are two status LEDs near the header to notify communication status.

Slide 5:

Points to remember:

  • Most of the modules developed by FOSSEE run on 12 volts
  • 24 volt connection is also provided


Points to remember:
  • Almost all the modules developed by FOSSEE are designed to work with 12 volts.
  • But since most PLC modules operate on 24 volts, we are providing an option to access 24V on board.
This brings us to the end of this tutorial.

Let us summarize.

Slide 6:

Summary

In this tutorial, we learnt about

  • Various components on OpenPLC version 1 Main board
Summary:

In this tutorial, we learnt about

  • Various components of OpenPLC version 1 Main board
Slide 7:

About Spoken Tutorial project

The video at the following link summarises the Spoken Tutorial project.

Please download and watch it

Slide 8:

Spoken Tutorial workshops

The Spoken Tutorial Project team:
  • conducts workshops using spoken tutorials and
  • gives certificates on passing online tests.

For more details, please write to us

Slide 9:

Forum questions:

Please post your timed queries in this forum.
Slide 10:

Forum for specific questions:

Do you have any general / technical questions on OpenPLC?

Please visit the FOSSEE forum and post your question.

Slide 11:

Acknowledgement

Spoken Tutorial Project is funded by MHRD, Government of India.
Slide 12:

Thank you slide

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.

Contributors and Content Editors

Nancyvarkey, Priyanka.guntaka123