Thank you so much ixo65. It works great.

I´m now trying to expand my program for temperature steps. Like this:

Press I1 warms the water to 60 degrees. When reached and press I2 these steps kicks in:

60 degrees for 30 minutes

70 degrees for 30 minutes

80 degrees for 10 minutes

I have done a program but I´m having troubles with steps kicking in when they are not supposed to do. I Think I can solve it but maybe I´m doing it more complicated than it is.

Thanks for all help. /m

Ladder is not the programming language with which I work, I do not like them. Since I can not help you.

But from your description I will create a program in FBD. It may take some time. If the values are 60, 70 and 80 is maintained even with only one heating?

OK.

Yes 60,70 and 80 are the temperatures that should be regulated. When going to these temperatures all Three heaters should be on like in the previous program.

I appriciate all the help. /m

THANKS!

It´s perfect. Well organized and works like I want. Really nice with the text on the display.

I noticed that you put a delay on the heaters, that should save me some fuses :)

aoke_frivall

I noticed that you put a delay on the heaters, that should save me some fuses :)

Correctly. This is precisely the idea I had ...

I can´t thank you enough. I´ll send you some beer when it´s all done :)

Hi again,

I have now programmed my beer machine so I can set the parameters from the display. I´m using Mathematic Instructions to the different temperature steps. So when I want the first step to be 72 degrees I set the temperate I want in the display and then the values for the other heats sets automaticly to 70 and 71 degrees.

It works fine but I have one problem.The mathematic instructions are not connected to outputs and I can´t transfer the program to the PLC unless the are connected. I have twelve mathematic instructions and not enough analog flags to connect to.

What to do? I attach the program.

/ Mikael