Process data capture

The process data capture tab is used to configure data acquisition on the process unit runs that are controlled by the tracker process unit. This type of data acquisition is used when data shall be collected and related to the active runs in the tracker process unit. When process data capture is used, new ports (PDC ports) will be available on the tracker process unit for collecting the actual data.  

This parameter tab is based on the parameter matrix concept. Use the Add button to add a new row and the remove button to remove a selected row. The columns of the matrix are described below.

Data Name

This is the name of the data definition on which to store the data. The data definitions available are governed by the database configuration.

Data type

This is a read only parameter displaying the data type of the selected data definition. In order to change the data type of a specific data definition the portal must be used.

IMPORTANT! Before the data type of a data definition is changed in the database, it is required that the data definition is removed from the tracker process unit. If not, the tracker process unit will will not function properly. 

Dimension

This is a read only parameter displaying the data dimension of the selected data definition.

Value source

This parameter displays the name of the port used for collecting the actual data to collect. The ports are named PDC <DataDefinitionName>  where <DataDefinitionName> is the name of the actual data definition.

Aggregation

This is a read only parameter displaying how to aggregate the data on the TPU. The aggregation type can only be changed through the data definition configuration page in the portal.

  • Min. The minimum value of the corresponding PDC port when the run is active is stored.
  • Max. The maximum value of the corresponding PDC port when the run is active is stored.
  • Average. The average value of the corresponding MDPDC C port when the run is active is stored.
  • First. The value present on the corresponding PDC port when the run is active is stored.
  • Last. The value present on the corresponding PDC port when the run is active is stored.
  • Std.dev. The standard deviation of the corresponding PDC port when the run is active is stored.
  • Integral. The integral of the corresponding PDC port when the run is active is stored.
  • OnChange. A new value is stored on the run when the run starts or the value of the PDC port changes.
  • None. No aggregation. Same functionality as First.

Eng. Unit

This is a read only parameter displaying the engineering unit of the actual data definition.

Description

This is a read only parameter displaying the description of the actual data definition.