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Learn how to control 2 outputs with one pushbutton using Siemens LOGO PLC programming.
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0:07
hello everyone myself
0:09
badas today in this video I will discuss
0:14
about one interesting
0:17
example here there are two outputs and
0:21
one input so we have to control two
0:23
outputs with one push
0:26
button if the push button is pressed and
0:30
released immediately then output one
0:33
will be on or off if the output one is
0:38
in off State then it will be in on state
0:42
okay again if the push button is pressed
0:45
and released immediately for a short
0:47
moment then again the output one changes
0:51
its state initially it is in off State
0:55
so it will be in on for every time if
0:59
you press and release the push button
1:01
the output one will be in on state to
1:04
off State or off state to on state it
1:06
will change okay the default start first
1:10
time state is off State remember
1:14
that if the push button is pressed and
1:18
it is hold for 5 seconds or more than 5
1:22
seconds then the output two will be
1:25
controlled the the default state are the
1:29
first time state is in off State when we
1:32
press the input push button for 5
1:34
seconds press and hold for 5 seconds
1:37
then output two will be
1:40
on again it is released and again the
1:43
push button is pressed for 5 seconds
1:46
then output two will be
1:49
off in simple terms if the push button
1:52
is pressed and released
1:54
immediately then output one will be in
1:57
control State output one will be
1:59
controll
2:00
okay if the push button is pressed and
2:04
hold for 5 seconds or more than 5
2:07
seconds then output two will be
2:09
controlled okay so the main objective
2:13
here is we have only one push button but
2:16
we are independently controlling two
2:22
outputs okay the output one state and
2:25
output two State doesn't matter only
2:28
depends on the push
2:31
button uh timing how much time it is
2:35
pressed depends on it the outputs will
2:38
be controlled
2:40
independently okay so pause the video
2:44
here and try to solve this logic you
2:47
have one input which is push button and
2:51
two outputs digital outputs with one
2:54
input you have to independently control
2:57
two outputs try to solve this logic
3:02
okay now I will explain the program I
3:05
will go to the
3:08
software I will take one
3:18
input and I will take two
3:25
outputs I will add the
3:27
comment this is my push
3:31
button
3:34
okay and q1 is
3:37
my output
3:42
one and Q2 is output
3:52
two
3:55
okay so for controlling each output I
3:58
will take one pulse relay block okay so
4:04
go down scroll down and select pulse
4:13
relay and give the block name false
4:19
relay and for second one also give the
4:22
block
4:23
name now I will connect the output of
4:26
pulse relay to the output one similarly
4:30
for second pulse relay also connect
4:33
output
4:37
two now for output two I need one timer
4:41
on delay timer after 5 Seconds only the
4:45
output two will be controlled that is
4:48
why I taken one on delay
4:54
timer okay and sell at okay 5 Seconds
5:02
okay now connect the push button to the
5:05
on delay timer
5:06
input and the output of on delay timer
5:11
connect to the pulse
5:17
relay the output two program is
5:20
completed now we have to make the
5:24
program for the output one now go to
5:28
basic functions
5:30
and
5:31
select nand Edge falling Edge remember
5:35
that we have to take falling Edge block
5:39
the arrow must be in down side and take
5:42
one end block
5:48
also these two are important blocks
5:52
here give
5:53
the block name
5:56
nand falling Edge
6:02
okay and this one is I'll just enter and
6:07
click
6:08
okay now connect push button to the
6:13
first input of the falling Edge land
6:16
block and connect the output of the
6:19
block to the first input of and block
6:23
and connect the end output to the pulse
6:26
relay input trigger
6:48
okay now connect the output of on delay
6:52
timer to the nand falling Ed lost input
7:00
again similarly connect on delay timer
7:02
output to the
7:05
end last input fourth input
7:19
okay now add not
7:23
input I mean this on delay timer is
7:27
there right two inputs connected here
7:29
here just add the not gate double click
7:31
here on the line one bubble will appear
7:35
that means not is added again here also
7:38
double click bubble will come not is
7:42
added now the program is completed
8:13
just adjusting these
8:16
lines for your simulation purpose there
8:18
is no need to
8:25
adjust now open the PLC Hardware
8:41
and download the program transfer PC to
8:47
logo if you don't have the hardware with
8:50
you do the simulation and test the logic
8:58
okay yes
9:01
program is
9:11
downloading now I will go to the online
9:21
mode sent IP and click
9:25
okay also follow our YouTube channel
9:29
social media networks you will receive
9:32
more updates in
9:36
future okay now we will test the
9:39
logic I will press the input i1c what
9:43
happens one time press and releaseed
9:47
immediately the output one is in on
9:49
state output one is in on state again I
9:52
will press the input i1 and again I will
9:54
release
9:56
immediately output one off again press
9:59
and release output one on press and
10:03
release off press and
10:05
release what happens if you press and
10:08
release
10:09
immediately what
10:12
happens the output one is
10:15
in switching to on State and off State
10:19
accordingly as per the input push
10:26
button okay
10:30
if you see for the output
10:33
two if I press the push button and fold
10:36
for 5 seconds are more than 5 Seconds
10:39
the on Del timer will be started now it
10:41
is zero see what happens timer started
10:44
after 5 Seconds it will be
10:46
on then pulse relay output will be on Q2
10:50
will be
10:50
on the pulse relay output will change to
10:54
on state to off State or off state to on
10:57
state every time the input changes its
11:00
state from 0 to 1 that is why if I press
11:03
it again the input i1 for 5 seconds
11:06
after 5 Seconds the delay timer will be
11:09
on that means pulse relay input is
11:12
received already previously it is an on
11:15
state now it makes output off if again I
11:19
will press the input i1 for 5 seconds
11:21
then again on delay timer will be on
11:24
after 5 Seconds puls Rel received it
11:27
input again output is in on
11:31
state the output to you can easily
11:33
understand there is not that much logic
11:35
is not
11:37
there see timer is running 3 seconds now
11:41
I will release the push button before 5
11:44
Seconds what happens Q2 there is no eff
11:48
but q1 is in on
11:50
state
11:54
okay now we will discuss the the program
11:58
part is is
12:00
completed output two is very clear just
12:03
push button timer pulse relay
12:08
output you have to understand output One
12:12
Step logic
12:13
only here the nand falling AG block and
12:17
end block are important okay we taken
12:21
nand falling AG because we considered
12:25
the push button release State for the
12:28
control of output
12:30
one observe I will
12:34
press
12:36
the push
12:37
button okay I will press the push
12:41
button and again release it when the
12:45
output changed
12:47
State when I press the push button at
12:50
that time there is no
12:52
change here when we release the push
12:55
button the release time is considered
12:58
for that Purp first we take an land
13:01
falling Edge
13:05
okay if you if I press the input i1 the
13:08
output one will not be on see if I
13:11
release the input i1 before 5 seconds
13:15
then the output one will be
13:19
on for that purpose we take an N falling
13:24
Edge
13:26
okay and here
13:29
this output one will be controlled okay
13:32
will be switched on State and off state
13:34
only
13:37
when the output two is not controlled
13:41
okay if push button is pressed for 5
13:44
seconds or more than 5 seconds then that
13:47
signal must be used for only for output
13:50
two if the push button is pressed for
13:53
momentary are less than 5 seconds then
13:56
that signal must be used for output one
14:00
for that purpose we need one
14:02
interlock okay that is why the on delay
14:06
timer output is connected to n falling
14:08
Edge and end
14:11
block so most uh this is the
14:14
concept and use the same logic simulate
14:19
the logic and explain why we added the
14:23
bubble not gate and why we used the
14:27
combination of nand following H and end
14:31
block with not
14:34
gates for the output one
14:37
functionality so explain or share with
14:40
us through the comment section
14:43
okay why the not gate and why the combo
14:48
of nand falling Edge and end block this
14:51
is the first question and the second
14:54
task is or second question
14:56
is here we use n fall langage and end
15:01
blocks right now try to simulate or try
15:04
to achieve this same program or
15:08
functionality using some other blocks
15:12
combination instead of nand falling Ag
15:15
and end block
15:19
okay try to do the same program using
15:22
other blocks program means I'm talking
15:25
about only these two
15:26
blocks nand and and replace these blocks
15:31
with some other blocks if you're able to
15:33
achieve some same functionality share
15:36
with us how you achieved
15:38
this remember when you are learning the
15:41
PLC
15:42
programming it doesn't matter how many
15:45
blocks you're going to use you can use
15:48
10 blocks 20 blocks no problem just
15:54
use any number of blocks and try to
15:57
achieve the
15:59
functionality try to achieve the
16:02
objective when you have good experience
16:05
with the
16:06
programming then you can think about the
16:09
optimization of the blocks or using less
16:13
number of blocks to achieve the output
16:15
okay when you are learning the
16:18
programming it doesn't matter how many
16:20
blocks you're going to use the first
16:23
thing is you have to solve the
16:25
problem and when you are practicing when
16:29
you achieved some experience with the
16:31
PLC programming then you can think about
16:34
the optimization okay some people
16:37
directly go for the
16:39
optimization okay the optimization is
16:41
not required when you are a
16:44
beginner this is one of the tip I want
16:47
to give with you thank you I will meet
16:50
you in the next video