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Hello.
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In this video we are going to learn how to use floating numbers in Delta plc for floating point edition.
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You need to use DADD instruction for subtraction floating numbers.
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You need to use Dsub instruction if you want to multiply two floating number in Delta plc.
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You need to use DMUL instruction for floating point division.
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You need to use DDIV instruction So
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You can see in this page for everything.
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For math instructions for floating numbers in here you can see as example DSUB DADD DDIV  and
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DMUL instructions in here values.
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And for these values you can see the outputs in the right side.
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So for this page we need to learn how to compare floating numbers in Delta plc so f greater than
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f not equal f equal f less than commands than you can see the symbols of these floating numbers
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comparisons.
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You can see them all in here and you can see as the example for example in here D38  is
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not is equal to 0.0001 D40 equals zero.
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So these are not equal as floating equals.
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this is our instruction.
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So m 32 is not activated.
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So for ISPSoft let's do a little bit practice and let's learn deeply these commands.
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I will open a new project and a new project.
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It's come here to programs right click.
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A new POU name.
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Let's say floating number and say OK
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a new project is created LDA M1000 always on contact.
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And for comparison let's say we need to use floating equal instruction.
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This is not correct.
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We will at just one contact.
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And this is a serial contact.
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So F Load means f LD .
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So we need to use it like this LD means actually LOAD.
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As you know that if Load or f LD D0 D2 and let's put here OR contact f or for example less
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than D4 D6 
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Also I will add to here same contact.
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LD 
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LD M1000
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M1000  like this already.
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Add a serial contact.
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And in here add an output out y 0 and here LD M1000 should be 1000 in here DADD for example D
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ten D twelve and one more netwoek.
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And LD M1000
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multiply D20 D22
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So these are just enough for for me for a moment I will go on line to my simulator.
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This project is compiling just before forgot the outputs.
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Sorry for this.
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D14 and D24 now compile our project again it it's compiled and go online and go
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online to plc or simulator and do a transfer for me.
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Yes.
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Now memory is remain seven thousand one hundred seventy six steps.
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Okay.
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Our cpu is run  situation but I said again.
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Run.
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So now.
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look our output but  this is not correct because we are always going to get this output
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to this condition.
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Imagine if D0 equals to D2  or D4  should be less than from D6
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So let's change it.
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Change present value zero point zero zero zero one
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no.
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Yes indeed so I put this value to here and I will say my data format AS float
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So
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this one change present value again zero point zero zero one.
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I will put it here and let's change it to zero point eight seven five.
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So you see our output is for a moment off because these floating numbers are not equal and for D4 - D6
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D4 D46 this comparison is not correct.
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So let's change it to
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zero comma zero zero two so you see from this line our output is high for a moment for floating addition.
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Let's change this present value.
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1 comma 2 3 and 5.
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This is our value and I will put here for example one comma and seven and six and five okay.
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So we will get three point zero zero zero zero for multiplication.
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Let's change for example change preset zero point zero comma zero.
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5 , 5 0 0.
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Let's say zero comma five hundred and multiply these three comma one or three point one.
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Okay so we will get these value one point five hundred fifty.
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So increase this value change this value for example five comma five.
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And enter and we will get these values.
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So floating one more multiplication five point like this.
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So we will get this all.
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So you can do a small practices like this.
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You can use DADD command for the addition DDIV command for the division and DMUL
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command for the multiplication and DSUB command for the subtraction for floating numbers.
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And you can use FLD  equals FLD less than 
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fld  for the serial context greater than for example and F LD not equal command in your applications.
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So I am finished for this video.
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See you in the next video.