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hello everyone welcome to automation
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Community today in this video we are
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going to discuss an example which will
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be about coffee grinding
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machine so let's look at the example
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first coffee grinder timer when the
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start button is pressed the grinder
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should run for 10 30 seconds before
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stopping automatically after stopping
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the buzzer after stopping the buzzer
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will turn on pressing stop button will
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turn off the buzzer after 5 seconds so
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for this example we will use a normally
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open contacts for start button and stop
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button and we will also use normally
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Clos contacts for memory bits and we
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will be also using some timers like TP
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and T on so let's move to TI portal
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where we will draw a ladder diagram for
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machine this is the interface of TI
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portal version 16 after adding the
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device let's go to PLC tags
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here PLC tags and then default tag table
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I will double click on it so here we
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need to add our inputs and outputs so
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the first input is start button
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and then we have one more input that is
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button and then we have two outputs that
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buzzer so the grinder is a is an output
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device so its address will be Q 0.0 and
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same will be with the buzzer so its
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we will minimize this table and we will
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go to program blocks I will double click
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on it and then double click on Main
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ob1 so here we will be drawing ladder
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diagram I will zoom into
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it and then I will add a normally open
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contact here and then I will insert a
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Quil so this normal open contact will be
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start button and this coil will be
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grinder so this grinder should run for
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30 seconds for that we will use a timer
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operation I will click on it and double
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TP so the pret value for the the TP will
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seconds so when start button is turned
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on the grinder will operate for 30
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second and after 30 seconds it will
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stop and then I will open the branch
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here and then I will add a
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coil so this coil will represent
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buzzer so after turning off the grinder
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buzzer should turn on
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buzzer will be t on will be used with t
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on I will double click on T
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on I'll click on okay and then the
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preset value for t on will be 30
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seconds so here when start button is
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turned on the current will flow through
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this this timer will start and it will
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start uh immediately after turning on
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the start button but this TP will turn
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on it will allow the current to flow
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through it as a result this grinder will
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turn on so the grinder will uh run for
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30 seconds and after 30 seconds the
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current will not pass through this timer
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this grinder will turn off but this t on
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will allow the current to flow through
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it after 30 seconds so when start button
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is turned on it will wait for 30 seconds
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and after 30 seconds the current will
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flow through this and buzzer will turn
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on and then we have one more button that
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is a stop button so when it is turned on
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I will insert a normally open contact
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for store button so when Star button is
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turned on the coil will turn on and this
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Quil will be a memory bit so this will
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be M 0.0 so this m 0.0 when top button
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is turned on buzzer should turn off
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Seconds so this m 0.0 should turn on
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after 5 seconds so this m 0.0 the pre uh
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the preced value for this t on will be 5
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seconds and this m 0.0 will be used here
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as normally Clos contact so this will be
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0.0 so this m 0.0 will turn off the
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Bowser so M 0.0 will turn on after 10
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second after 5 Second when stop button
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is pressed when stop button is pressed M
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0.0 gets on after 5 Second as a result
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this fer will turn on after 5 seconds so
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simulation click on okay
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finish and after that I will start
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monitoring and with that I will switch
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view here we need to create a new
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project let's create a new
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after that I will go to simulation
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tables and simulation table
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one I will right click here and load
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TX after that I will need to start the
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uh so as you can see here when I turn on
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the grinder turns on and it remains on
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seconds 12 13 14 the grindle will
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operate for 30 second and after 30
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second it will automatically
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stop and after stopping the grinder the
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start so the grinder stopped but the
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buzzer turns on then we need to press
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the stop button to turn off the
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buzzer so when I turn on the stop
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button when I turn on stop
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button the buzzer doesn't uh turn
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off immediately but it will stop for uh
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seconds it was all about this example
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thank you for watching
