GX develope: which command shouldmi use for discrete water level?

[Mas01]

Daft question coming up...
Which instruction should I use for this water level code? This is for float switches mounted on a vertical pole.
The MOV command can't be correct because, for example, if X75 goes TRUE , D612 is set to 25, but if it goes FALSE again, the value of D612 is retained.
Which command should I be using so that the D612 changes depending on float switches?
Thanks

 

[Mas01]

Cancel this question, I was being thick.
All working now.

 

[I_Automation]

The best way, if it's not what you came up with, is add a rung before 20 and MOV K0 D612 (or the minimum level you would have)

 

[drbitboy]

curious about the solution. did you add a rung to put a 0 (or -999) into D612 at the top?


[@I_Auto beat me to it!]

 

[Mas01]

curious about the solution. did you add a rung to put a 0 (or -999) into D612 at the top?


[@I_Auto beat me to it!]

Yes, I added a rung to put 0 into D612.