using a single momentary pushbutton input to turn on/off output

[vminassian]

Hey everyone.. i am taking an intro course to plc programming.. i am having trouble figuring out this problem that seems very simple..

use a single momentary pushbutton input to turn on and off a single output.

i have been trying to use latch output but i cannot figure it out.. any help will be appreciated..

thanks

 

[catserveng]

Here's a link to 4 tips you will find usefull if you're starting out.

http://falconlabs.com/PLCTIPS.htm

Hope that helps

 

[xcode]

I need to accomplish this also.

What have you learned or read online that will help in understanding this?

I want to have a Proface going to a SLC500 I am thinking. What module would be needed in the 500 series to accomplish momentary on back to off when a button is pushed on the Proface?

 

[zgozvrm]

Here's how I do it...
[tt]

button Bit1 Bit2
001 ---][--------]/[----------( )--

button Bit1
002 ---][---------------------( )--

Bit2 Out Bit3
003 ---][-----+-----]/[-------(L)--
|
| Out Bit3
+-----][--------(U)--

Bit3 Out
004 ---][---------------------( )--

[/tt]

The first 2 rungs create a one-shot, preventing the output from continually toggling ON and OFF.
Bit2 is both the output of the one-shot and the input to the toggle logic. Each time Bit2 goes high, Bit3 is toggled to the opposite state as the current state of the output.
The output is then set accordingly.

 

[marwanco]

You can use sequencer command.
Its one rung programme.