How to represent the level shift of tank as an analog signal on screen?

With INVT’s VT designer software, there is support for the ‘Bar Graph’ tool and a Macro program segment that will help make the simulation of an analog signal, specifically the tank’s level shift signal, as close to reality as possible.

Here are the steps:

Step 1:  Create Water Tank Parameters.

• Click on icon in the ‘Toolbar’ -> Initialize the water tank.
• Click on the water tank object -> General -> to configure properties, memory address.
• Click on the ‘Scale’ tab to create a water level measurement scale.
• Click on the ‘F.Macker’ tab, ‘F.Macker’ -> Create a slider.

Step 2: Create Memory Data for the Water Tank and ‘High Level’ and ‘Low Level’.

Click on the ‘Advanced’ tab to assign memory addresses for ‘High Level’ and ‘Low Level’.

$U0 : Memory address for the water tank.

$U1 : Memory address for the low water level.

$U2 : Memory address for the high water level.

Step 3: Write a Macro Program.

To understand how to write a Macro program in detail, you can refer to the article ‘Guide on Writing a Macro Program’.

Right-click on the ‘screen’ interface -> Screen properties -> Check ‘Cycle Macro’ -> Write the Macro program code.

+ Analyze the ‘Cycle Macro’ code.

$U3 = $U1 +$U2  /// $U3 : Memory address containing the total value of high and low water levels
/// $U1: Memory address containing the Low Level value///
/// $U2: Memory address containing the High Level value///
If $U10.0 (B)  ////$U10.0 : Address bit for the on/off button to control system operation///
If $U0 <= $U3 // / $U0 =Memory address for recording the water level value in the water tank///
$U0=$U0+1
$U5=08 ///// #U5 : Bit 3 of the memory address containing the water pipe inlet address is set (to create the effect of water flowing into the tank).
ELSE
$U5=0 //// Reset water flow into the tank.
ENDIF
ENDIF

Step 4: Run the program simulation.

– Select ‘Compile’  ->  run offline simulation