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Hello,  In this video.
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We are going to learn processing of plc commands. In the left side.
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You can see the scheme of how to read input signals and how to write outputs.As Input x comes to input terminal
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and this stores in the memory and then after input terminal, input x is stored.
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It reads ex. X0 or X7 or X75.
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I mean X physical input status from memory.
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And then in the plc program section.
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It writes output states to device memory and also it reads output states from memory.
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Also auxiliary relays, everything. Anything about the output it reads and writes from
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memory device memory or to device memory and after than it's giving an output at the output section
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an output latched memory than output terminal than output Y.
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In the plc you can see these two things is really important.
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People see projects as ladder logic it is going from left to right and it's going from up to down.
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So it goes from left to right and left to right on it.
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Do this from up to down.
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And this is the shows how it is going on how it's processing and this is for example all contact is
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used in here and also in here.
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You can see the arrow line arrows direction and also the important thing is here.
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You need to know about the processing of plc commands and for this video purpose.
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It reads or plcs , its general explanation reads input signals and processes in the program
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section and it gives outputs , according to inputs it gives outputs.
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That's all inside of the device memory.
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It is  handles a lot of things.
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Then we don't need to  know what's going on in the device memory just we need to know outputs are writing
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or also reading from device memory and it's giving an output according to input signals.
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So I'm finished for this video.
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See you in the next video.