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Hello.
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In this video we are going to learn special modules  for Delta plcs.
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We can use just analog input module analog output module or in one module we can use input an analog
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module thermocouple temperature module PT100 or PT1000.These sensors for PT temperature
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module positioning module or high speed control module and the important point for this lesson.
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You can add maximum eight module to the right of you.
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This is our CPU.
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And then we can put here one and two and three and four and five and six and seven and eight.
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Just eight maximum Module to here.
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And for this special modules we need to use FROM and TO commands.
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What is these commands,From command or From instruction reads data from the special modules.
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And if we want to read from these special modules any data we need to use FROM  command.
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And if we need to write something to some data to these special modules we need to use TO command.
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So how it works from command.
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Just briefly introduction with the from command when the condition X0 is active.
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So what happens.
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It reads from  two data, read starts from the special modules.
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How many data you need to assign how many data that you are going to read.
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K2.
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In this example it will read two data from where ? from this address which address and which module from ? 
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so we need to put or assign the module number to here K0. 0 is the first module so we will
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read from the first module two data or two control register and this control registers is starting
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from K29 or control register 29-30
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So we will read CR29-30 two data and we will write this data.
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It's starting from D0 and it means so what happens.
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D0 and D1 sequentially or respectively will be written from control registers 29
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and 30.So CR29 will be inside of D0, CR30 will be in D1.
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So for the TO instruction usage when this contact goes high or in the rising edge.
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That's okay.
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We are writing some data with TO command so which module first module 0 the first one.
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How many data , just one data we are going to write.
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So what will we write.
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Okay.
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Zero.
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So we will write just 0 value to first modules 18. control registers.
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So controller registers 18 will be 0 after X0 activated or from goes to on, on the rising edge contact.
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That's all for the special modules just we need to know these are for a moment is enough we will take
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a look one by one in the feature in the another videos  like analog input modules and examples and the temperature
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modules and etc. So for this video I am finished here.
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See you in the next video.