DSC Module VIs and Functions
LabVIEW 8.6 Datalogging and Supervisory Control Module Help
June 2008
NI Part Number:
371618D-01
»View Product Info
June 2008
NI Part Number:
371618D-01
»View Product Info
June 2008, 370589F-01
Installed With: DSC Module. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the DSC Module VIs and functions to log, view, and manage historical data and network shared variables. You also can use the DSC Module VIs and functions to set up security for data logging applications.
The VIs and functions on this palette can return general LabVIEW error codes or specific DSC Module error codes.
| Palette Object | Description |
|---|---|
| Historical Trend | Reads historical data from the Citadel database and displays the data on an XY graph. You must wire a VI Server reference of this XY graph to the Trend Reference input to use this Express VI. You must place the Historical Trend Express VI inside a While Loop. |
| Real-Time Trend | Reads live data from shared variables and displays the data in a waveform chart. You must wire a VI Server reference of this waveform chart to the Trend Reference input to use this Express VI. |
| Subpalette | Description |
|---|---|
| Alarms & Events VIs | Use the Alarms & Events VIs to acknowledge alarms, display alarm summary or event history information, or obtain alarm summary status. |
| Engine Control VIs | Use the Engine Control VIs to interact with the Shared Variable Engine by manipulating LabVIEW project library files, processes, shared variables, and I/O servers. For example, you can use the Engine Control VIs to deploy project libraries and shared variables to the Shared Variable Engine. You then can create an I/O server to read data from and write data to the Shared Variable Engine. |
| Historical VIs | Use the Historical VIs to obtain or read historical data about a shared variable, resample trace data, compute statistical data for a historical trace, query logged alarm and event data, or convert historical trace data to a spreadsheet format. |
| Security VIs | Use the Security VIs to access security information about your application. |
| Shared Variables VIs | Use the Shared Variables VIs to interact with a shared variable, convert a string to a shared variable and back, and create an invalid shared variable name. |
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