'less or equal' or higher or equal

[Blahenazo]

Hello,

Why is it not possible to have this option in the logic part of this controller ?

if I take ph for example I only have increase , decrease , alarm

But forexample if I want to make a smart ATO , that adds fresh water if my sal probe is higer or eqaul to my sal
and I would add salt water if my sal is lower then my sal.

currently the profilux takes no decision if its on target and the alarm goes off after a while because my ato goes into alarm

offcourse to avoid to get the profilux confused you can not have more then 1 time 'x or equal' for the same sensor in the same logic.

[Wirus]

• Why is it not possible to have this option in the logic part of this controller ?

Cause logic function is strictly digital. The keyword is 'boolean logic'

forexample if I want to make a smart ATO , that adds fresh water if my sal probe is higer or eqaul to my sal and I would add salt water if my sal is lower then my sal.

Where´s the problem? You need two sockets in any case, one for fresh water and one for salt water, so you can code

• logic with level low AND sal probe controlling downwards for fresh water attached to fresh water pump/valve
• logic with level low AND sal probe controlling upwards for salt water attached to salt water pump/valve

Not very difficult I think ...

offcourse to avoid to get the profilux confused you can not have more then 1 time 'x or equal' for the same sensor in the same logic.

Sure you can. You simply have to create a virtual sensor for that. This sensor you also can use together with the normal one in one logic

[Blahenazo]

Apperently It seems to be more difficult than you thought because => There is a flaw in your proposed logic (and that's what I'm talking about )


This profilux has hysteris where it takes no decision for higher or lower
and so what if the sal is spot (within hystersis) => the profilux takes no decision !! => ATO fails !

sdf.jpg
BUT there is a solution ( but I tried it my redox probe, didn't want to play with sal on my tank )

to create equal
logic 1 redox not decrease and redox not increase

so to get equal or .... you can add extra logic slot to get what I want.

so that is 2 slot to make an equal or



so I can make it work but I still prefer if GHL would add a condition 1 or more operators ( equal <= which would be not 'equal' in the strict sense of the word but equal as within hysteresis )
in code its some extra code to of flipping some bit if its within hystereris and while they are at it make equal or ....

[Wirus]

This profilux has hysteris where it takes no decision for higher or lower

If that´s a prob, you can use an additional logic sensor with a shifted req. value