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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 Fish Feeding system so let's
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look at the example first Fish Feeding
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system the system should dispense three
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types of food for 5 Seconds every 15
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seconds it will dispense food only if
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there is movement of fishes in the near
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means there will be a sensor which will
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detect the movement of fishes and then
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there will be three walls which will
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dispense three types of food one by
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one and the wall will remain open for 5
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each and then it will repeat the process
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again and again so for this example we
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will use normally open contacts normally
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close contact we will be also using
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memory bits and timers like TP and T on
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so let's move to TI portal where we will
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draw a ladder diagram for this
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example this is the interface of TI
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portal version 16 firstly we need to go
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to PLC tags then default tag table so
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here we need to add add our inputs and
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outputs so the first input
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is start button and then we have one
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sensor and then we have three
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one so this is an output its address
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0.0 and then we have valve 2 and valve
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three so these vales will be
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here after that we'll go to program
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ob1 so here we will be drawing the
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ladder diagram so firstly I will zoom
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into it like this I will insert a
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normally open contact and a
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Quil this normally open contact will be
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button and then this this uh coil will
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be a memory bit and this memory bit will
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get activated when start button is
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pressed and the sensor is activated that
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will sense the mement of
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fishes and then this m 0.0 will be used
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here as normally open
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contact to turn on the Val one so this
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one and then this Val one will operate
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for 5 seconds for that we will use a
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timer operation TP here and the preset
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value for this TP will be 5
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seconds and then I will open the branch
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here add a Quil so this will be Val two
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so this valve two will operate when Val
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one is off so I will insert a normally
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closed contact that will represent Val
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one and Val two will turn on for 5
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seconds for that we will use a timer
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operation TP and the preset value will
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seconds and then I will open the branch
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add a coil and this coil is for wall
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three and this Val three will turn on
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one when Val one and Val
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two are closed so this will represents
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valve one and this represents valve two
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and the valve uh three will operate for
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5 seconds for that we will use a TP here
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TP the preset value will be 5
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seconds and then so there will be W one
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for 5 seconds W two for 5 seconds and w
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three for 5 seconds so there will be 50
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15 seconds when valves are open so I
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will insert a normally open
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contact and this will be M
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0.0 and this m 0.0 will turn on one more
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coil that is a memory bit M 0.1 and it
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will turn on this m 0.1 after 15
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seconds so this is the preset value will
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be 15 seconds and this M1 will be used
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here as normally closed contact so this
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will be M 0.1 so this makes it in a loop
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so after 15 seconds so when start button
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is turned on and sensor gets activated
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then M 0.0 gets through and when M 0.0
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gets through firstly the Val one gets on
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and when it gets off then Val two gets
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on for 5 seconds and when it gets off
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the valve three gets on and after 5
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Seconds all the valves get off and after
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15 second this m 0.1 gets to and when M
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0.1 gets to M 0.0 gets off and when M
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0.0 gets off this m 0.1 gets off and
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when M 0.1 gets off M 0.0 gets on again
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and when M 0.0 gets on again again that
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these timers will start the Val one gets
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on the Val two gets on and Val three
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gets on so after 15 seconds
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the preset value for this will be 30
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seconds as after dispensing the after
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dispensing the type 34 it will wait for
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15 second then again Val one will open I
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will start the simulation here
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finish after that I will start
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monitoring after that I will switch to
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view let's create a new project here
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go to simulation tables and simulation
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one so here I will right click and then
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click on load project tag so when I turn
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on the start button nothing
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happens because there should be the
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moment of sensor the moment of fishes so
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the sensor will get activate if there is
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a movement in the fishes so if there is
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movement in the fishes this m 0.0 gets
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through and when it gets to this y 0.0
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valve gets on then valve two gets open
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for 5 second then valve three gets open
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for 5 seconds then it will wait for 15
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seconds and then uh this 0.1 gets to
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when M 0.1 gets to m0 point gets off and
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again this m 0.1 gets off and this m 0.0
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gets on and with that this Val one gets
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again so as you can see Val one got on
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then again Val two will get on and again
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then Val three will get on and after
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waiting for 15 seconds this Val one will
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get on again and again it was all about
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thank you for watching
