prgramming help with multiply parameters


New member
OK, I know it's here somewhere, I just can't find it.

With the hot weather, I am having an issue with my lights and tank temp.

What I want to do, is to have my MH go off when the tank temp hits 80.2 and have my VHO's go ON. If the temp gets above 80.5 I want the VHO's to go OFF. Then, when the tank gets below 80 I want the VHO's to go on again and when the tank gets below 79.5 I want the MH to go on again, and the VHO's to go OFF.

Can this be done?

As it sits now, the MH go off when the temp gets above 80.2, but then tries to cycle back on when the tank drops to 80.1.

I'm sure I'm missing something, I just can't figure it out. :(

Thanks in advance


Premium Member
A few hints...

you want to create a dummy timer (e.g. P01) that is turned on/off based on the temperature ranges that you want the lights off. Let's say you turn the dummy timer 'on' when the lights should be off.

Next, and the important past is where, add a statement to turn off the light when the dummy timer is on and place the statement AFTER all light control statements.


If Timer DUM = On Then LT1 OFF

If you are still having a problem I can write it for you but I don't have time at the moment but I wanted to get you the information on how it can be done.

You can use the AC simulator to test out your program....