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welcome to automation community. Today
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in this video we are going to discuss
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about an example in which we will be
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controlling valves using switches. So
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Example five. If toggle switch one is on
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then valve one and wall two will be
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open. Open means output on. Close means
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output off. If toggle switch is on, then
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valve two and valve three will be open.
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If toggle switch three is on, then val 3
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and valve four will be open. If toggle
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switch four is on, then valve one and
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valve four will be open.
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So we have four toggle switches and four
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valves. So val one will be open when
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switch one or switch four is on.
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Similarly wall two is open when switch
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one or switch two is on. Similarly wall
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three gets open when either switch two
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is on or switch four is on. And while
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four gets open either when switch three
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gets on or switch four gets on. So for
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this example we will use normally open
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contacts with that we will be
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implementing all logic gate. So let's
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move to codicuses where we will draw the
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ladder diagram for this example.
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So we will open cortices here.
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Let's create a new project
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template. Select the template as
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standard project and click on okay.
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And then click on okay.
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So let's go to this PLC programming.
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Double click on it and here we will draw
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we will insert a normally open contact
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and then we will insert a uh one more
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normally open contact but will connect
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and then we will insert a coin. So in
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this way we have implemented or logic
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gate. So this will be switch
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Okay. and then this will be switch four.
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So when if switch one or switch four is
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on then wall one will be open. So this
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Similarly we will insert one more rung
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one more network glow and here uh this
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will be for wall two. So wall two will
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be on if switch one or switch two is on.
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So we'll insert a contact and then we'll
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insert one more contact but in parallel.
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So here is option insert contact in
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parallel and then we will insert a coil.
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So this normally open contact will be
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and this will be switch
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So when switch one or switch two is on
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then wall two will get open.
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Okay. And then we need to uh draw the
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ladder diagram for val 3. So we'll
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insert one more network below it. And
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here for valve three to open either
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switch two or toggle switch three should
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be on. So we'll insert a normally open
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contact and then we will insert one more
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contact but parallel here. And then we
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will insert a coil. So this will be
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two and this normally open contact will
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be switch three. Okay. And this coil
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will be val three. So val 3 gets on when
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switch two is on or switch three is on.
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So this will be val 3.
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And similarly we will insert one more
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network. We'll insert network below it.
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And here this will be for valve 4. So
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val 4 will get open when switch three is
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on or switch four is on. So we'll insert
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a contact here and then we will insert.
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We should click here and add one more
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contact parall to it and then a coil. So
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this uh valve four will get on when
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switch three switch three or switch four
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gets on and then valve four gets open.
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So when switch one is on val one gets on
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and val 2 gets off. And then when switch
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two is on then val two and while three
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gets on and when switch three is on then
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val three and while four gets on and
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when switch four is on while four and
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while one gets on. So when switch one is
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on the signal will flow through this and
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while one gets on the signal will also
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flow through this while two gets on and
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when switch two is on
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for wall one we have not used switch
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two. So here you can see switch two is
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here for W two. So when switch one is on
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the current the signal will pass through
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this while two gets on and also we have
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used switch two here. So when it when we
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turn it on the signal will pass through
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this as a result this valve 3 gets on.
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Similarly when we turn on switch three
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you can see here when we turn it on the
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signal will pass through this val 3 gets
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on and also here the signal will pass
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and turn on this valve four. That means
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valve four gets open. And similarly when
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switch four gets on the signal pass
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through this as a result this valve 4
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gets open and with that valve one also
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gets open. So we'll generate code here.
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Let's go to online and start simulation
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and then we will log.
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After that we will start. So as you can
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see here no valve is open. So when I
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let's debug it first write values and
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you can see valve one and while two gets
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on. So when switch one is on val one
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gets on with that wall two get will also
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get on. So we'll turn it off and we will
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turn on switch two. So let's debug it
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and write values. As you can see while
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one gets off but W two and W three gets
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on. So switch two is turned on while two
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gets on. Sorry W two gets open actually.
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Okay. So the output pin will get on the
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valve will open. So with that switch two
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will uh will open val 3. Similarly we'll
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and turn on switch three.
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So let's debug it write values and you
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can see switch three when switch three
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gets on while three opens and also with
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that val 4 gets opened and similarly
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we'll turn it off. We will turn off
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switch three and turn on switch four.
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It will open val 4 and val one. It was
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all about this example. Thank you for
