Answer / rajesh rajan

I am also faced same situation and i made a logic like this


[ ]
[----[ ]---i---[\]-------------( )--]
[ PB i M2 O/P ]
[ i ]
[----( )---i ]
[ O\P ]
[ ]
[----( )---[\]-i-[\]-----------( )--]
[ O\P PB i M2 M1 ]
[ i ]
[----[ ]-------i ]
[ M1 ]
[ ]
[ ]
[----[ ]---i---[ ]-------------( )--]
[ M1 i PB M2 ]
[ i ]
[----[ ]---i ]
[ M2 ]
[ ]

Answer / naresh yadav

[---II---------------(p)-----]
i0.0 a0.0
[-i--II-----I\I--i------()---]
i a0.0 o0.0 i o0.0
i i
i--II-----I\I--i
o0.0 a0.0

II - Normally Open
I\I - Normall Closed
() - Output
(p) - pulse

Answer / sauri

PB
|------II-----(osr)------<b3:0/0>---|
| |
| b3:0/0 M2 |
|-----II------I/I--------<M2>-------|
| b3:0/0 M2 |
|-----I/I-----II----|

b3:0/0=binary bit;
PB=push button;
osr=one shot rising;
II=NO push button;
I/I=NC push button;
M2=motor for start and stop;

for any query pls contact:-
sauriprasad@gmail.com,
santosh33cooldude@gmail.com,
rkskumarpanda@gmail.com

Answer / sara

Sorry for my mistake in the third network

|---| |---------|/|--------(M0.0)-----|
I0.0 i M0.1
i
---| |---
M0.0


|---| |---------|/|--------(Q0.0)-----|
M0.0 i M0.1
i
---| |---
Q0.0


|---| |---------||--------(M0.1)-----|
Q0.0 i I0.0
i
---| |---
M0.1

Answer / mahesh

[ PB M2 O/P ]
[-----[ ]--------[/]--------( )----]
[ i ]
[ O/P i ]
[-----[ ]---i ]
[ ]
[ PB O/P M1 ]
[-----[/]----[ ]-------------( )---]
[ ]
[ PB M1 O/P M2 ]
[-----[ ]----[ ]-----[ ]-----( )---]
[ ]

Answer / suresh

Hello friends tray to understand the question,
Only use the single push button, from above every answers are giving to no.of switches, and hear require only on push button, so i think hear use the + edge trigger and - edge trigger in parllel

Answer / plc

first put a pb and connect an output, latch that circuit
with that output, to turn off form a exor logic using the
input as pb and connect the output with nc switch in the
first circuit.

Answer / sunil

here You will get complete answer to question

One push button to on and off motor with ladder program

http://plc-scada-dcs.blogspot.com/2012/04/push-to-on-push-to-off-plc-program.html

enjoy.....

Answer / sara

|---| |---------|/|--------(M0.0)-----|
I0.0 i M0.1
i
---| |---
M0.0


|---| |---------|/|--------(Q0.0)-----|
M0.0 i M0.1
i
---| |---
Q0.0


|---| |---------||--------(M0.1)-----|
Q0.0 i Q0.0
i
---| |---
M0.1

Answer / mahesh m

on and off using single push button
[----||---i---|\|-------------( )---]
[ PB i M1 O/P ]
[ i ]
[----( )---i ]
[ O\P ]
[ ]
[----||---||-------------------( )--]
[ O\P PB M1
[

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