PLC help and sequencing

[Alex Cormier]

Originally Posted by Travis Hoffman

What PLC and programming software are you using?

AB slick 150, ladder logic.

in this case, i would like to do it sequencing.

the issue at the moment is i can select cold wash, it does it thing and then when it's over it resets back to the top of the program. then when i try to select warm water wash, it will not function. It will only stay on the cold wash cycle. It is not fully resetting the program so that i can select cold water wash, and then warm water wash once cold is done, and then some other kind of wash.

get what im saying?

[Qbranch]

*straightens hat* oakie dokie... I havent done this in a while (since i really really don't like ladder logic) but i have a little experience with an Allen Bradley MicroLogix 1000.

I don't remember the names of everything... but if you let a timer run for each one of your functions, then just tie the relay output for your motor or whatever to the EN channel out of the timer...

Well i may just be confusing but I believe thats what i did... I think that was almost two years ago now so i may be completely wrong.

Do you HAVE to use ladder logic?

Does anyone else wish you could program allen bradley PLCs with a sequential language? The hardware's fantastic, its cheap (comparitvely), but man I can't stand ladder logic.

-q