Scripts & Data Enrichment (Tutorial)

Scripts → Tutorial | Concept | How-to Guide | Reference

Create Tag Expressions

1. Navigate to Scripts → Expressions
2. Add temperature conversion:

Add status logic:

Create Script Task

1. Go to Scripts → Tasks
2. Click plus icon, name: ShiftCounter
3. Use Server.DateTimeInfo.Hour as Trigger
4. Double-click to open Code Editor
5. Enter code (no method wrapper):

csharp

// Reset counter at shift change
int hour = @Server.DateTimeInfo.Hour;
if (hour == 6 || hour == 14 || hour == 22)
{
        @Tag.Units_Previous = @Tag.Units_Produced;
        @Tag.Units_Produced = 0;
}

Build Script Class

1. Navigate to Scripts → Classes
2. Create class: TankCalculations
3. Enter methods (no class declaration):

csharp

public double CalculateVolume(double level, double diameter)
{
    double radius = diameter / 2;
    return Math.PI * radius * radius * level;
}

public double CalculateFlowRate(double volumeStart, double volumeEnd, int minutes)
{
    if (minutes == 0) return 0;
    return (volumeEnd - volumeStart) / minutes;
}

public string GetStatusText(double value, double limit)
{
    if (value > limit)
        return $"High: {value:F2} (Limit: {limit:F2})";
    else
        return "Normal";
}

Use Class in Expression

1. Go to Scripts → Expressions
2. Create volume calculation:

Note: No @ symbol needed in expressions

Event-Driven Task

1. Create task: TemperatureMonitor
2. Configure trigger on tag change:

csharp

if (@Tag.Tank1_Temp > @Tag.HighLimit)
{
    @Tag.Alarm_Active = true;
    @Tag.Alarm_Message = $"High Temperature: {@Tag.Tank1_Temp:F1}°C";
    @Tag.Alarm_Time = DateTime.Now;
    
    // Log to historian
    @Script.Class.ServerMain.LogEvent(
        "Temperature Alarm",
        @Tag.Tank1_Temp
    );
}

Configure:

• Trigger: Tag.Tank1_Temp
• Domain: Server

Add External References

1. Go to Scripts → References
2. Add DLL if using external libraries
3. Open Code Editor
4. Click Namespace Declarations
5. Add required namespaces

Test and Debug

1. Build verification:
   • Check green checkmark in BuildStatus
   • Review BuildErrors if red X
2. Runtime monitoring:
   • Go to Scripts → Monitor
   • Check ExecutionCount
   • Review LastCPUTime
3. Debug with breakpoints:
   • Enable debug in Runtime → Build and Publish
   • Set breakpoints in Code Editor
   • Attach debugger during runtime

Step-by-step guide to add calculations, automation, and data enrichment to your TankFarm solution using Scripts module capabilities.

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