Learn Wincc - 10 Code Examples & CST Typing Practice Test
Siemens WinCC (especially WinCC Unified) is a scalable SCADA/HMI system integrated into the TIA Portal ecosystem, enabling engineering, visualization, data logging, and operator control for industrial automation across panels, desktops, and web-based HMIs.
Learn WINCC with Real Code Examples
Updated Nov 27, 2025
Code Sample Descriptions
Hello World Message Box
MsgBox "Hello World from WinCC!"
Display a simple message box in WinCC.
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.
Increment Counter Tag
SmartTags("CounterTag") = SmartTags("CounterTag") + 1
Increment a counter tag by 1.
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.
Slider Control for Motor Speed
SmartTags("MotorSpeed") = SmartTags("SpeedSlider")
Set motor speed tag according to slider input tag.
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.
Read Multiple Tags and Calculate Total
SmartTags("TotalFlow") = SmartTags("FlowTag1") + SmartTags("FlowTag2")
Sum two flow tags and store in total tag.
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.
Log Event with Timestamp
SmartTags("LogTag") = Now & " - Button Pressed"
Write a timestamped message to a string tag.
Reset All Outputs
Dim i
For i = 1 To 10
SmartTags("Output" & i) = 0
Next
Loop through outputs to reset them to 0.
Frequently Asked Questions about Wincc
What is Wincc?
Siemens WinCC (especially WinCC Unified) is a scalable SCADA/HMI system integrated into the TIA Portal ecosystem, enabling engineering, visualization, data logging, and operator control for industrial automation across panels, desktops, and web-based HMIs.
What are the primary use cases for Wincc?
Factory floor HMIs & machine visualization. Central SCADA monitoring for plants. Process automation dashboards. Energy/water/utility control rooms. Line-level production HMIs with TIA Portal integration
What are the strengths of Wincc?
Tightest integration with Siemens PLCs. Modern browser-based Unified Runtime. Strong engineering consistency in TIA Portal. High-quality industrial symbol library. Great for Siemens-heavy automation ecosystems
What are the limitations of Wincc?
Requires TIA Portal (resource heavy). Licensing complexity. Limited compared to Ignition for enterprise IIoT. Less flexible than fully web-native SCADA platforms. Scripting limited to JS with sandbox rules
How can I practice Wincc typing speed?
CodeSpeedTest offers 10+ real Wincc code examples for typing practice. You can measure your WPM, track accuracy, and improve your coding speed with guided exercises.