Hello, In this video. 1
We are going to learn processing of plc commands. In the left side. 2
You can see the scheme of how to read input signals and how to write outputs.As Input x comes to input terminal 3
and this stores in the memory and then after input terminal, input x is stored. 4
It reads ex. X0 or X7 or X75. 5
I mean X physical input status from memory. 6
And then in the plc program section. 7
It writes output states to device memory and also it reads output states from memory. 8
Also auxiliary relays, everything. Anything about the output it reads and writes from 9
memory device memory or to device memory and after than it's giving an output at the output section 10
an output latched memory than output terminal than output Y. 11
In the plc you can see these two things is really important. 12
People see projects as ladder logic it is going from left to right and it's going from up to down. 13
So it goes from left to right and left to right on it. 14
Do this from up to down. 15
And this is the shows how it is going on how it's processing and this is for example all contact is 16
used in here and also in here. 17
You can see the arrow line arrows direction and also the important thing is here. 18
You need to know about the processing of plc commands and for this video purpose. 19
It reads or plcs , its general explanation reads input signals and processes in the program 20
section and it gives outputs , according to inputs it gives outputs. 21
That's all inside of the device memory. 22
It is handles a lot of things. 23
Then we don't need to know what's going on in the device memory just we need to know outputs are writing 24
or also reading from device memory and it's giving an output according to input signals. 25
So I'm finished for this video. 26
See you in the next video.