Learn WINCC with Real Code Examples

Updated Nov 27, 2025

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Code Sample Descriptions

Hello World Message Box

MsgBox "Hello World from WinCC!"

Display a simple message box in WinCC.

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Toggle Output Tag

If SmartTags("MotorOutput") = 0 Then
    SmartTags("MotorOutput") = 1
Else
    SmartTags("MotorOutput") = 0
End If

Toggle a digital output tag when the script is executed.

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Increment Counter Tag

SmartTags("CounterTag") = SmartTags("CounterTag") + 1

Increment a counter tag by 1.

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Alarm Trigger Based on Tag

If SmartTags("TempTag") > 80 Then
    SmartTags("AlarmTag") = 1
Else
    SmartTags("AlarmTag") = 0
End If

Set an alarm tag when temperature exceeds threshold.

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Slider Control for Motor Speed

SmartTags("MotorSpeed") = SmartTags("SpeedSlider")

Set motor speed tag according to slider input tag.

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Initialize Multiple Tags

Dim i
For i = 1 To 10
    SmartTags("Output" & i) = 0
Next

Initialize an array of tags to 0 using a loop.

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Read Multiple Tags and Calculate Total

SmartTags("TotalFlow") = SmartTags("FlowTag1") + SmartTags("FlowTag2")

Sum two flow tags and store in total tag.

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Conditional Output Based on Multiple Tags

If SmartTags("StartButton") = 1 And SmartTags("SafetyOk") = 1 Then
    SmartTags("MotorOutput") = 1
Else
    SmartTags("MotorOutput") = 0
End If

Set output if two conditions are true.

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Log Event with Timestamp

SmartTags("LogTag") = Now & " - Button Pressed"

Write a timestamped message to a string tag.

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Reset All Outputs

Dim i
For i = 1 To 10
    SmartTags("Output" & i) = 0
Next

Loop through outputs to reset them to 0.

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Code Sample Descriptions

Hello World Message Box

MsgBox "Hello World from WinCC!"

Display a simple message box in WinCC.

Let’s Try →

Toggle Output Tag

If SmartTags("MotorOutput") = 0 Then
    SmartTags("MotorOutput") = 1
Else
    SmartTags("MotorOutput") = 0
End If

Toggle a digital output tag when the script is executed.

Let’s Try →

Increment Counter Tag

SmartTags("CounterTag") = SmartTags("CounterTag") + 1

Increment a counter tag by 1.

Let’s Try →

Alarm Trigger Based on Tag

If SmartTags("TempTag") > 80 Then
    SmartTags("AlarmTag") = 1
Else
    SmartTags("AlarmTag") = 0
End If

Set an alarm tag when temperature exceeds threshold.

Let’s Try →

Slider Control for Motor Speed

SmartTags("MotorSpeed") = SmartTags("SpeedSlider")

Set motor speed tag according to slider input tag.

Let’s Try →

Initialize Multiple Tags

Dim i
For i = 1 To 10
    SmartTags("Output" & i) = 0
Next

Initialize an array of tags to 0 using a loop.

Let’s Try →

Read Multiple Tags and Calculate Total

SmartTags("TotalFlow") = SmartTags("FlowTag1") + SmartTags("FlowTag2")

Sum two flow tags and store in total tag.

Let’s Try →

Conditional Output Based on Multiple Tags

If SmartTags("StartButton") = 1 And SmartTags("SafetyOk") = 1 Then
    SmartTags("MotorOutput") = 1
Else
    SmartTags("MotorOutput") = 0
End If

Set output if two conditions are true.

Let’s Try →

Log Event with Timestamp

SmartTags("LogTag") = Now & " - Button Pressed"

Write a timestamped message to a string tag.

Let’s Try →

Reset All Outputs

Dim i
For i = 1 To 10
    SmartTags("Output" & i) = 0
Next

Loop through outputs to reset them to 0.

Let’s Try →