Version Information
Release Notes, Update information, Certifications and Frequently Asked Questions.
Concepts
Your first step into modern and powerful process visualization.
Deployment
Topics, you need to know, before using WinCC OA.
Security
Go beyond the norm in cybersecurity.
Engineering
Powerful tools for easy or complex engineering tasks.
Data Management
Classify, structure and archive your data.
- Archiving
  Overview of the archiving solutions currently available in WinCC OA
- Module PARA
  Graphical interface for editing datapoints and datapoint types.
- Common Name Service (CNS)
  The plantmodel editor can be used for building and modifying data structures such as views and trees based on CNS and use them within projects easily.
- Mass configuration
  Mass configuration in WinCC OA redefines the fundamental principles of setting up a project and subsequent configuration of the huge range of data points.
- SQL Panel
  The SQL panel allows you to enter SQL statements to perform queries on current and archive data in the WinCC OA database.
- ASCII Manager
  The ASCII Manager allows you to input and output and thus edit data points and data point types and to configure data points.
- Correction Values and Laboratory Values
  These panels can be used to change existing values (=correct), query values from and add new values too the HistoryDB and RDB.
- Data Point Groups
  The main purpose of grouping data points is to simplify selection of datapoints and datapoint elements.
- Delayed Alerts
  An alert delay can be configured with delayed alerts. This allows short range changes to be filtered out.
- Relational Databases with Control-ADO
  The DB interfaces in WinCC OA offer the possibility of an access to external databases.
Business Logic / Control
Endless possibilities in data processing for your projects.
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.

DPE selection for the trend configuration

With a click on a data point type in the PARA tree two tabs are displayed in the panel field - Trend and Symbols.

The Trend tab allows the selection of data point elements, whose curves should be later displayed in the variable trend. This enhancement is used for:

easy and fast creation of a trend view with specific data point elements
creation of a consistent trend view for all data points of a type
displaying of specific object library's data point elements in the trend when the standard object library is used. These curves are used in the trend panel of a faceplate (e.g. _VarTrend_STDLIB_general), if the Standard Object Library is installed or an object library is available.

These settings are not available in a distributed system.

Tick the specific check boxes next to the data point elements and confirm the configuration by clicking on Apply or OK. Note that max. 16 curves can be displayed in a variable trend.

Figure 1. "Trend" tab

Alternatively you can enter the following code example in order to display the curves in a variable trend:

string sDp = "myDataPoint."; //name of the data point
string sDpt = dpTypeName(sDp);
dyn_string dsDptTrendCurves;
dyn_string dsDollarTrendCurves;
if (sDp[strlen(sDp)-1] == ".")
sDp = substr(sDp,0, strlen(sDp)-1);
if (dpExists("_ds_"+sDpt+".trendElements"))
dpGet("_ds_"+sDpt+".trendElements" , dsDptTrendCurves);
for (int i = 1; i<=dynlen(dsDptTrendCurves); i++)
{
  string sTemp = dsDptTrendCurves[i];
  strreplace(sTemp, sDpt, sDp);
  dsDollarTrendCurves[i] = "$CURVE"+i+":"+sTemp;
}
openTrendCurves("_VarTrend_STDLIB_general", -1, dsDollarTrendCurves);

The trend view “_VarTrend_STDLIB_general” can be configured in the variable trend properties (e.g. curves style, scale changes) - see Variable Trend configuration.