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Business Logic / Control
Endless possibilities in data processing for your projects.
Types of Control Functions
An overview of the types of functions distinguished within Control.
File functions

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Data Management
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Business Logic / Control
Endless possibilities in data processing for your projects.
- Introduction to CTRL
  An introduction to the product's own programming language Control(CTRL).
- Control Classes
  The overview of classes available in Control.
- Types of Control Functions
  An overview of the types of functions distinguished within Control.
- Control graphics
- CONTROL Functions
- CtrlExtension
  The CtrlExtension allows the addition of custom C++ code.
- CTRL Debugger
  You can use the CTRL debugger to debug the Control programming language. The debugger can be used via its own panel, which also enables the monitoring and setting of variable values during the execution of a script.
- SQL in CONTROL
  The database functions enable you to quickly carry out value queries on data points and elements.
- API Manager
  The WinCC OA API (Application Programming Interface) offers a number of functions adding special Managers to this process control system.
Data Visualization
User interfaces, Trends and Reports for every purpose and device.
Southbound Interfaces
The process connection to the actual machines/sensors.
Northbound Interfaces
Your portal to the cloud or supervising systems.
Web Connectivity / Network Interfaces
Data exchange, APIs and web technologies
User Management
All about authorization, authentication and login-customization.
Availability
How to get your system uptime to the maximum.
Reporting
Create state of the art project reports without limits.
Addons
Useful tools and enhancements for special demands.
Reference Tables
Detailed and extensive content for special project adaptation.
Videos & Tutorials
Explore the capabilities of WinCC OA with our carefully selected collection of video tutorials and guides.
WinCC OA Documentation
Basic information about terms and functions within the documentation.
Disclaimer
A brief clarification of liability exclusions or legal notices.

File functions

You can use these functions to import and export files, open, close files as well as perform other file manipulations.

The file functions that use path specifications, handle the paths relative to the WinCC OA PROJ_PATH. An empty string "" is interpreted as PROJ_PATH.


abortFileTransfer()
access()
baseName()
byteSizeToString()
copyAllFiles()
copyAllFilesRecursive()
copyFile()
delExt()
dirName()
fclose()
feof()
ferror()
fflush()
fgets()
fileToString()
findExecutable()
fopen()
fprintf()
fprintfPL()
fprintfUL()
fputs()
fread()
fscanf()
fscanfPL()
fscanfUL()
fseek()
ftell()
fwrite()
getExt()
getFileModificationTime()
getFileNames()
getFileNamesRev()
getFileSize()
getPath()
getPendingFileTransferCount()
getYoungerFiles()
isdir()
isfile()
mkdir()
moveFile()
remove()
rename()
requestFileList()
requestFileTransfer()
rewind()
rmdir()
setFileModificationTime()
tmpnam()