This is weird, I was just now doing that myself!

Since the CLICK does have set and reset instructions I think that would be easiest. some people don't seem to like SET/RST but doing it with a regular OUT is more complicated.

One will need a C bit for the result, and two rungs:

if button is pushed and C bit is off, then SET bit

if button is pushed and bit os on then RST bit

button(contact) bit(contact) bit(output)

Xn Cn Cn

--||---------|/|-------------------------(SET)

--||---------||--------------------------(RST)

debouncing can be another consideration, but since the PLC scan does take some time (and the CLICK is not super fast) one might hope that is not a significant problem, if using inputs on the brick one can set filter times, but not for expansion modules

EDIT: as Gary shows, one needs to use an edge contacts for the push button, I forgot to show that, but it is critically important

Sometimes this is referred to as a flip-flop circuit.

https://accautomation.ca/creating-a-flip-flop-circuit-in-the-plc/

The above post will explain the logic.

GIFI hope this helps you out.

Regards,

Garry

https://accautomation.ca/

I was having same issue. I wanted to toggle a C-bit in my case instead of Y-output. I was unable to do it even after using an edge contact. since it will activate both the rungs. and finally keep the state the same.

The idea is that it needs to be done using two scans so we need to have a secondary bit.

and again, I am new to this ladder logic programming, so if there are experts who know a better way, I would love to know.

I was able to implement toggle using two different ways.

Option 1: When you want to Toggle C-bits

Option 2: When you want to Toggle DS bits (integers)

Here's one that uses a math instruction and a hex register.

To change the state of the flip-flop output somewhere else in the program, use a copy or a math instruction to set the value of DH1 to 0 or 1.

A DH register has to be used because the math instruction doesn't do bit operations like XOR on DS registers.

Maybe I am just not understanding the question or concept well enough, but why can you not simply do this? 

 To me right now, I just cannot understand why all the other images have so many extra instructions and lines. I must be missing something here.

(not using Click software cause I dont have software installed but should be the exact same thing but with Click hardware IDs instead of tags like I have shown. If you were actually using productivity software, you simply drop a single "toggle" instruction and you would be done)