Description

Waits until tank contents falls to a specified level.

Use Tank_FallTrigger to initiate an action when a tank level falls to a specific level.

Components

<Tank ID>

The tank name or location index number.

<Level>

When the tank level falls to this value, any subsequent logic executes.

Example

When an in-process tank, TankX, falls to 1000 gallons, it triggers a mixing tank to begin producing more product. To model this, define the following activated subroutine to control the mixing tank:

Tank_Loop //logic repeats continuously

{

Tank_FallTrigger(TankX, 1000)

[Insert logic to mix new batch here]

}

Please note

Using Tank_FallTrigger instead of a WAIT UNTIL statement prevents the action from triggering again until the level first rises above the fall trigger level.