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Hello.
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In this video.
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We are going to learn hardware structure of Delta DVP SS2 Plc.
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I will open DroidCam and with the phone I will show the structure of DVP-SS2 Plc in here.
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You can see Run and stop switch but first of all I will make it bigger than for you.
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Okay.
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In here you can see the model name.
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If we go a little bit closer DVP14SS211R so R means relay and if here if we see for
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example T transistor then that means this is transistor output in here.
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You can see S/S and X0,X1,X2.. etc.
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So these are input terminals and S/S means.
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Source or sink.
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So this is common connection point in here.
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You can see C0, Y0,Y1,Y2... etc. so c0 and c1 is common.
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So if we put here 24VDC  we will get from Y0,Y1,Y2,Y3... from these
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outputs we will get 24V if you put here C0 -C1 negative or minus so we will get
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from here NPN output or 0V and DVP14SS2
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for this plc you can see it in here black area so here 8 pin male input.
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This is for rs232 communication so we will connect to this port and we will do
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a download and upload our plc projects from here and lower side you will see this one in here.
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A little bit closer in here you can read it RS485 communication port
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So as you know the RS485 communication is just to wire cabling.
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So plus and minus.
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So we will communicate with the external device like a VFD or other plc etc.
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via RS485 port from here 
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You can see power supply GND and 0Volt and 24 volt so the blue cable is grown.
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The black cable is zero or minus.
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And the red one is 24 Volt.
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So in here.
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You can just put your power supply for plc and you cannot.
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If you pull pull it back
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you can see it.
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This is special connection/input so you cannot put it wrong to plc just press it and forward.
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That's okay.
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And what we forgot.
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For this plcs we already set to run and stop switch like this.
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So as hardware you can put your plc run position or stop position like this.
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So you have power and run and error lights.
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So if you powered on your Plc the power LEDs will be green and your plc is run situation so run it will
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be green and if there is an error inside of the plc the error led will be red.
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So for this video I'm finished here.
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Just  you can see the input terminals and the common points in here.
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This is the hardware of SS2 Delta Plc and we will continue to our lessons with this plc and
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the in future lessons for the ST Languages and  for another languages.
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We will select AS and also for example SV/ SV2 series time by time.