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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 cut and polish so let's look at
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the example first cut and polish a
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machine is used to cut and polish glass
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push button by pressing and releasing is
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used to carry on the cutting the glass
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process which takes 10 seconds then
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again on pressing and releasing the same
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button for the second time we will be
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able to do polishing the glass which
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will take place for 15 seconds that
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means there is a push button when it is
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being pressed and released first
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time then the process of cutting the
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glass will take place for 10 seconds and
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after 10 seconds when push button is
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again second time pressed and released
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then second process of polishing the
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glass will take place for 15 seconds so
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for this example we will use normally
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open contacts and normally close
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contacts we will be also implementing
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latching using memory bits and some
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timers like TP so let's move to TI
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portal where we will draw a ladder
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example this is the interface of TI
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portal so firstly we need to go to the
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PLC tags and default tag
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table so here we have to add our inputs
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and outputs so we have only one input
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button push button and then we have some
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outputs we have two output that is
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cutting that may be a
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cutter cutting we'll write the name of
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here the address will be Q 0.0 and then
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we have one more output that is
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polishing after that we'll go to program
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ob1 so here we need to add our inputs
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and outputs so I will add a normally
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here that will be a push button and then
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we will insert a coil
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that will represent a memory bit M 0.0
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and then I will open the branch at a
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normally open contact then close so we
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are latching this m 0.0
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then when M 0.0 gets through and push
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button is released then the process will
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0.0 and this is is push
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button and it is one more coil that is M
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0.1 and we will atch it here so I will
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open the branch add a normally open
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0.1 and after that this m 0.1 will be
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used here as normally open contact M
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0.1 to turn on the ma for cutting the
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glass so we'll insert a coil that will
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represent the process of cutting and
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this process will take place for 10
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seconds so for that we'll use a timer
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TP and the pret value for TP will be 10
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seconds and then when M 0.1 is true and
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M 0.1 is true and push button is being
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pressed second time so this represent
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the push button when it is being pressed
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second time then one more memory bit
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gets through that is M
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0.2 and this m 0.2 will be led
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here so I will open the branch add a
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normally open contact and then connect
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it like this so this will be m
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0.2 and then when this m 0.0 gets
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through and push button is being
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released when M 0.2 gets on and this
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push button is being released then one
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more process will start
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and this process will be
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of cutting the glass sorry polishing the
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glass so it will represent polishing and
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this polishing process will go on for 15
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seconds so the timer uh the preset value
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for this timer will be 15 seconds so
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this will be 15 seconds so we will move
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this so we'll start the simulation here
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load and then finish after that we'll
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start the CPU click on
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okay then start monitoring and then
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switch to project View
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so here we need to create a new project
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go to simulation tables and simulation
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table one so here we need to uh right
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click and then load project TXS so when
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push button is pressed
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nothing happens as you can see
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here only this m 0.0 gets through and
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released this cutting process has
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started and it will cut the glass for 10
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seconds after that the cutting process
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has stopped and then when I press it
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again then this m 0.2 gets through but
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the point polishing start doesn't start
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so for that we need to release a push
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button and then only the polishing
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process will start and it will polish
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second and after 15 seconds the
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polishing process will
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stop so as you can see here polishing
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process has stopped it was all about
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this example thank you for watching
