Shadowing Practice: Siemens S7-1200: Signal Modules - Wire, Program, Test - Learn English Speaking with Video

Hey everybody, Sean Tierney here from theautomationschool .com.

And in this episode of the automation show, We're going to take a look at the S7 -1200 Expansion I /O modules which are known as signal modules.

And the good folks over at Siemens sent me in a larger S7 -1200 with several modules.

And we'll just take a look at them quickly here.

The ones I have set up today are a digital input expansion module, a digital output expansion module, and then an analog in and out expansion module.

And you can see right there, the first one's an SM -1221.

The next one is an SM 1234.

Now what I've done is I've wired a bunch of stuff I had lying around the office here to these

and let me just zoom out some and show you what we got here.

So this guy down move some of this other stuff in.

So what I've done is I've started with the IFM temperature sensors

that we used in the last episode because I already had them out and And they output both discrete and analog, right?

So that gives me my inputs to the system.

So I'll have some discrete inputs here.

You can see right in there, I got two discrete inputs coming in, one from each temperature sensor.

Okay.

And then I have my analog in right here.

So here's my two analogs from those two sensors.

Now I've wired one as current and one as voltage.

And that's why you see I'm actually skipping input number one.

zero and number two because as we'll see input zero one have to be the same type

so current or voltage so um Those are my inputs now for my outputs digital outputs.

I just wired in a couple of

leftover LED pilot lights from one of my courses as well as the meters I use on When I'm teaching analog, you know, getting started with analog modules.

So I have, you know, 0 to 10 and 4 to 20 meters right here.

So we'll be using these two right here.

So those are wired.

You can see right here on the analog output.

You can see I have the first one, output number 0, wired as current.

And the second one is wired as voltage.

The wiring here looks identical, right?

But these meters are actually different inside.

setup here again empowering everything with the side top power supply

which is great because it has you know over current protection short circuit protection and all of that so um

Before we turn this all on, let's see if we can't convert our program from our last S7 -1200

project and see if we can convert it to this new controller

and add these I /O modules and configure them correctly so this all works.

So with that set up, before we go over the computer though, I do want to thank all our patrons over at patreon .com /automation.

And now we can go over to the computer.

so here we are this is the program i actually just

renamed it here let me hide vmware i actually renamed it to project

03 underscore v16 the last one we did was 02

and the first thing i want to do i'm going to go to devices

and networks i'm going to double click on the device here

and i need to change this because this is a 1214

and that's not what i have here as a matter of fact let's zoom in on the controller

if you remember last time we did this we had a 1212c

so i'm going to go ahead and change this controller change device Okay, we want a 1214.

Okay, there it is.

Now notice it's choosing version 4 .4 firmware.

this is going to cause us a problem because That's not 4 .4 firmware.

So in any case, we will see what happens when we try to download it, what happens and the errors we get.

So let me go ahead and click on OK.

Okay, saying, hey, I'm going to close your Obi -Wan.

OK, here we are.

Now look, all the extra signal modules I can add to this unit because it's a bigger unit, so it has more expansion capability.

So now the first thing I want to do is let me add the digital input.

This is an eight point input.

And let me make this bigger here.

And let's make this bigger too.

Okay.

So let's go ahead and drop this in here.

Okay, you can see the 1221 right there.

Okay, next we have a digital output.

Thank you.

It's an 8 point.

Drop this guy right over here.

Okay, you can see it's a 1222 and last

but not least I have an analog in out and So let's go look for the Thank you.

Analog in and out.

and I'll drop this one And here, you see?

1234. Okay, so far so good.

Now, the next thing I'm going to want to do is I'm going to want to set up the analog.

So channel zero...

I'm going to have set for current.

OK?

Now channel 1, you'll notice I can't change it.

That's what I was telling you earlier.

I had to wire the voltage to channel 2 so that I could

uh choose it differently because whatever i set this to is what the next channel will be Set to.

And again, you can see plus or minus 10 volts.

There is no zero to 10 volt selection here.

Okay, so with that done, let's look at the outputs.

I want the first one to be current.

Thank you.

And the second one to be voltage.

Okay, so now that I've set up my analog, it's not really anything set up to do with the digital.

Well, except I could create some tags.

Let's go ahead and create some IO tags here.

So we're going to be using the first two inputs.

So I'm going to call this DI.

underscore and this is slot two so I'm going to call it 20 Whoops.

Twenty?

Now this is my own nomenclature.

These are my own tags.

I'll call the next one 21.

You can name your tags whatever you want.

Typically your company will have a standard that you're going to go by or, you know, um, a format that you're going to use you know so in any case let's do the outputs now so i'll do

do underscore this is slot three so i'm just going to go to three zero and This is what works for me.

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D -O, whoops, D -O, 31.

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Okay, now let's go to the analog.

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Okay. So, IoTags, analog ends.

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I'm going to call this AI _I _I _I _I _I

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_I _I _I _I _I _I _I _I _I _I _I

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_I _I _I _I _I _I _I _I _I _I _I _I _I _I _I _I _I _ Let's see here.

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It's slot four, so I'll call it four.

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Whoops.

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4 -0.

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And I'll call this one, I'm not using it, but I'm just going to go and order here for one.

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Thank you.

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and then this is the other one I'll be using AI _42 That should be good enough for a quick little program.

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Alright, well speaking of program, let's open up Obi -Wan.

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our main program here.

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And let me make this smaller.

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And you know what I want to do is, when one of my inputs comes on, I want to turn the corresponding output on.

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So in other words, if sensor one is out of range, I want to turn on light one.

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And if sensor zero is out of range, I want to turn on light zero.

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Okay, so I just happen to have red and green, but we'll just, we'll just use those as indicators that the corresponding sensor is on.

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So let me come in here.

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and we'll drop this right here and now let's go grab one of these uh outputs here and put it right there.

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So And I will do the same thing again.

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Contact and coil.

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Excellent.

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So this input will be our digital N20, and we'll go to digital out 30.

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And this one will be digital in...

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21 I'll go with digital output.

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31 and again as you know i'm new to semen so

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if there's any experts out there who have some tips and tricks Please share them with us.

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We would love to know about them.

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The next thing I want to do is I want to take the analog, right?

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I want to take those analog values coming in

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and throw them to the output so I can see them on the meters. So let's go ahead.

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And I think in this case, I'm going to use a move.

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Yeah.

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Okay.

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This is what I would do in other controllers, so I'm just going to do it here.

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I don't know if this is the best way to do it, but it definitely seems to work.

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So I'll take an analog input 0.

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Now wait a minute, that's not what I want.

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I want, you know, that's from the old program.

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I want analog input 40, and I'm going to put that out to analog output.

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Where's my analog output?

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Hmm.

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Did I forget to do that?

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Let's go back there.

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Thank you.

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All right.

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Okay.

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Thank you.

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Thank you.

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Uh -oh.

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Thank you.

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Let's see.

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yeah i did look at that so a o we'll do 40.

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Thank you. and 8041.

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Okay, so let's go back to our code and We're going to say Thank you.

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ai40 goes to AO 40.

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Okay, and we'll put another move over here. And we'll take...

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A I 42.

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Remember, we're skipping 41 because it has to be the same as 40, and I wanted to try both current and voltage.

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And we're going to take this out to A O 41.

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Okay, so everything's looking good, right?

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Well, I don't think we're going to be able to download it because I think there's a problem with the firmware.

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It doesn't match.

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This, I think, is newer firmware.

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what I did, the 4 .4, and that doesn't have that firmware in there.

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So, well, let's try it.

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We'll see what happens.

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So I'm going to select the processor.

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I'm going to click on Download.

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Of course, I will have to turn...

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power on.

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So let me do that and I'll be right back.

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Okay, everything's plugged in and powering up.

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So in a moment we should be good to go.

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Excellent.

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All right.

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So now let's start a search.

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Thank you.

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Okay, there it is.

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It found it.

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my 1214 C now originally it had once 192 1680 .10

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as the address in the pre -show I actually download

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and test it make sure everything worked

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so now it has the same address as my other s7 1200 has of course

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because I just converted the same program so let's go ahead and load it in Okay, look at it.

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failed.

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Fail will happen.

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Thank you.

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Not a compatible firmware rev!

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Wow.

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So we were right.

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You can see the error here as well.

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So how are we going to fix this?

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Well, what I'm going to do here is I'm just going to go back into the controller.

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Change the...

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Change device.

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I'm going to make it firmware, let's make it the oldest one possible.

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Thank you.

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Okay, so we want to change it to...

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Hey.

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Let's make it...

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4 .0.

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Okay, we're going to see what will happen if I do that conversion, but that's okay.

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Okay, it's going to close and reopen the Obi -Wan.

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That's fine.

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Okay, now let's try to download it.

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Okay, we'll load it. And finish.

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Okay.

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And let's pull up our...

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PLC tags.

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We'll monitor those.

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Okay, great.

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Now we can see here on the analog inputs, ten thousand And...

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6000 roughly right And the analog outputs, 10 ,000, 6 ,000, because I'm just copying that.

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Here, let's pull open the OB1.

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We'll take a look at that.

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And let's monitor this guy.

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You can see I'm taking whatever comes in.

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I'm putting it right back out.

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So let's go back to our tags here.

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And we can also see...

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If we look through here, Both of these are on.

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the dl20 and 21 are both on because i'm below my range

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so i should be able to do two things here let's go back to obi -wan And we'll scroll up here.

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Okay, you can see both my lights are on.

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Okay, and what I'm going to do is, you can see I really got the temperature down in here this morning.

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okay now you can see that going they were like at 64.

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so now they're climbing climbing climbing

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oops this one went to 80 that one's still at 78 so you can see i got one output and um

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if i bring the other one over 80.

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I get the other output.

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Oh, this one already dropped down below 80.

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Okay, so I'll warm them up quite a bit over 80.

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And I got both my outputs.

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We can come back here and we can see the code here.

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See that's working.

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Now one of the other things too is we can watch.

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We'll actually see our outputs are changing on the meters.

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Our output's changing because...

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these values are changing.

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So let me let me go ahead and do this what I'll do is I'm gonna I

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uh turn the air conditioning on try to cool these sensors off really quick

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and then we'll come back and you'll see

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that these meters have changed dramatically matter of fact before i do that i'm

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Let me go ahead and zoom in on them.

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And we'll watch them change as they cool down, these bottom two.

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Thank you.

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Thank you.

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Okay, I actually put the temperature sensors right in the grill of the air conditioner

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and they're down in like 47 and 49.

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are their temperature.

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So what I'm going to do here, I'm going to stop the air conditioner because it's kind of loud.

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I'm going to go grab the units here.

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Keep your eye.

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on the meters because I'm going to grab them

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And you should see the meters go up because I am holding on to them.

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Using my body heat, to raise their values Yeah.

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and i should get them all the way through yeah let's see if i can get them under the camera here

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Get them all the way through.

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The 65 to 80 range.

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and all the way up into the 80 + range.

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when their outputs will come on, Yep, see that?

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You can see the meter is changing too because we're taking that analog in.

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One of these is current, one is voltage, and we're putting it to the analog outputs.

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Okay, and we can see that on the screen as well in our code.

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So with that, that's how easy it is to use signal modules with the S7 1200.

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You just add them into your project.

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Um, download you know configure analog of course just download and go so it's really very simple to do

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and um yeah that's it

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so i wanted to say a huge thank you to siemens

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for saying i'm in i can't wait to do more with them we even have more modules to look at

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but if you're looking at expanding your 7 1200 with some additional signal modules

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yeah it can't get much easier than that right so with

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that i just want to thank you for watching for subscribing please give us a like

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if you enjoyed the show i also want to thank all

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of our patrons over at patreon .com forward slash automation um you guys really uh you can help us

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and keep us going and i also always love to throw out

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that if you know anybody looking for automation training check out my website theautomationschool .com And, uh, Let them know that I sent you here from the automation show.

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And with that, I want to wish you all of every safe, healthy and happy week and until next time my friends Peace.

What is the Shadowing Technique?

Shadowing is a science-backed language learning technique originally developed for professional interpreter training and popularized by polyglot Dr. Alexander Arguelles. The method is simple but powerful: you listen to native English audio and immediately repeat it out loud — like a shadow following the speaker with just a 1–2 second delay. Unlike passive listening or grammar drills, shadowing forces your brain and mouth muscles to simultaneously process and reproduce real speech patterns. Research shows it significantly improves pronunciation accuracy, intonation, rhythm, connected speech, listening comprehension, and speaking fluency — making it one of the most effective methods for IELTS Speaking preparation and real-world English communication.

Shadowing Practice: Siemens S7-1200: Signal Modules - Wire, Program, Test - Learn English Speaking with Video

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