What is Sequential Function Chart
Sequential Function Chart is also another graphical way of programming plc.
this programming language is commonly used and easier to represent scenarios where
there are multiple states of operations. this language is also similar to the flow charts of a computer science algorithms.
however unlike the other graphical programming languages. sequential function chart programming is done in two specific formats which are steps and transitions.
step depicts what is happening as per the program requirements while transitions are the conditions for the next step.
now let's look at a typical work example. in our case, we have a conveyor system that moves products from one of the conveyor
to the other end of the conveyor. now the plan is to monitor the product moving from point A to Point B. In the same vein.
we also intend to monitor our conveyor as well.
now let's make it sink.
we will create our tag accordingly. we will define our Input and output conditions accordingly.
now we will start defining our steps accordingly. the first one which is s1 depicts a ready system.
which means when the press our push button, the conveyor system will be on standby, and it is only when the conditions are meant
that the conveyor should start rotating.
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Timecodes
0:00 - Recap
0:42 - What is Sequential Function Charts
1:14 - Typical examples of Work Example
1:47 - Sequential Programming/Reset Functions
6:13 - Recap
6:32 -Upcoming series
7:29 - End
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