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System Management
The System Management is the central administrative unit for WinCC OA Systems.
Reports
Variable Trend
A set of panels and scripts used for the simplified display of trend curves and trend groups (up to 16 trend curves).
Variable Trend Functions

System Management
The System Management is the central administrative unit for WinCC OA Systems.
- System management
- Diagnostics
- Reports
  - Variable Trend
    A set of panels and scripts used for the simplified display of trend curves and trend groups (up to 16 trend curves).
  - 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.
  - Service protocol
  - WinCC OA Excel Report
    With the WinCC OA Excel Report reports can be created. Templates are used for reports. If a report should be created for a specific time, the system uses the templates and automatically fills the template with data from the process database. Reports can also be created, printed and saved time-controlled without user access. For more information, see chapter Excelreport/topics/excel_report_basics.html.
  - SQL in CONTROL
    The database functions enable you to quickly carry out value queries on data points and elements.
  - Data Point Element Monitor
- Database
- Driver
- Driver IEC
- Driver OPC
- Driver S7
- SmartSCADA
- Permission
- Communication
- Settings

Variable Trend Functions


Function	Description
openTrend()	Opens a predefined trend display group.
openTrendCurves()	Opens the trend display with the configuration trendName, and replaces the curves that contain dollar parameters. CAUTION: openTrendCurves replaces the dollar parameters of a trend curve. The curve that then opens might not contain a data point. The DP is passed as a parameter of the openTrendCurves() function.

Tip:

These functions are used in a sample panel located in <PROJ_PATH>/panels/examples/VT_testpanel.pnl.