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OPC Data Acquisition

Genesis OPC Explorer 3.1

About Genesis OPC Explorer 3.1
IDE:MS Visual Studio 2017
Appl. Size:11.8 MB (12.386.304)
Creation Date:20-Oct-‎2018 18:09:18
Installer Size:6.70 MB (7.025.823 bytes)
Installer Date‎20-Oct-‎2018 18:43:37

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Genesis OPC Explorer 3.1 Menu

Genesis OPC Explorer 3.1

Fast Track
What's New in Release 3.0
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Safe Use of Genesis OPC Explorer 3.1
Genesis History

Genesis OPC Explorer Setup

Select OPC Server
Manage OPC Groups
Manage Acquired OPC Items
Manage Calculated OPC Items
Load OPC Project
Save OPC Project
Close OPC Project

Data Acquisition and Storage

Start Data Acquisition
Resume Data Acquisition
Stop Data Acquisition
Display Performance Data
Acquisition Data Matrix

OPC Data Listing

Display of OPC Data Listing
Export OPC Data
Export to Clipboard
Toggle Performance Display
Configure Types Color

OPC Data Charting

Display of OPC Data Chart
Set Chart Series Colour
Set Chart Title Options
Manipulate Chart Display
Set Series Selection
Set Chart Axis
Set Chart Legends
Save Chart Image as File
Save Chart Image to Clipboard
Enable Cursor Data
Toggle Server Data Display

Registration and Support

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      Resume Genesis OPC Data Acquisition

When a Genesis OPC Data Acqusition is stopped (see here for details), the OPC Genesis project is still alive and can be restarted.
  • Click on the icon 'Data Acquisition and Storage' in the left pane of Genesis OPC Explorer 3.1 main window.

  • Click on the Button 'Resume Data Acquisition' of the Ribbon Category 'Data Acquisition'

Important Note As the Genesis Project is still active after a Data Acqusition Stop, on resuming the Data Acquistion, the acquisition engine makes its best to reduce the Acquisition Gap that occurs due to acquisition stop.

Looking at an exemple will make the behaviour easy to understand ...

Resuming OPC Data Acquisition

In that project, the acquisition rate was 100 ms (as seen in the column labeled 'Acquisiration Rate'). At the data Id 305171 (that is, 2018/09/29 17:09:27.973), the OPC data acquisition was stopped and Genesis OPC Explorer 3.1 recorded the last data acquired. Later, the OPC Data acquisition was resumed. At first, Genesis OPC Explorer 3.1 computed the time gap between the current time and the expected time for the next data (that is, data Id 305172). This gap was equal to 242 seconds. From then, the acquisition engine increased the acquisition rate at the maximim speed to reduce the gap.

Resuming OPC Data Acquisition

Finally, around 90 seconds later, the gap was reduced to a value less than the acquisition rate and the normal rate of data acquisition was used for the next acquisition.

See Also

Start Data Acquisition
Stop Data Acquisition
Acquisition Data Matrix
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