PI Source System: Settings Tab

Procedure

  1. To configure settings for a PI source system, on the Plant Connectivity Management Console screen, select a PI source system and click on the Settings tab.
  2. For the information you need to enter, use the following table:

    Field

    Description

    DigStr as String

    If you select this checkbox, the DigStr values are interpreted as a string.

    Call Type

    • If you select the call type Asynchronous, PCo submits a tag request to the PI server that can be terminated by the PI server.

    • If you select the call type Synchronous, PCo submits a tag request to the PI server that cannot be terminated by the PI server.

    Use GetPoints2

    • If you are using a new version of the PI SDK, you must select the Use GetPoints2 checkbox. In this case, all the searches use the GetPoints2 method. This method results in better performance.

    • If you are using an older version of the PI SDK, you must deselect the checkbox. In this case, all the searches use the original GetPoints method.

    Number of Threads

    Here you can enter the number of parallel threads (processes) (see also: Thread). The default value is 6.

    If you enter 1, single threading is used. If you enter a value between 2 and 9, multithreading is used.

    If there is a high data load, the performance improves if you use multiple threads.

    Minimum Elapsed Time

    Indicates the minimum time interval between two events. PCo creates a notification message for each event. The time specified here is the minimum time that needs to have passed between both notification messages.

    Policy for Storing Tag Values with Identical Time Stamps

    You can specify here how you want PCo to deal with duplicate tag values. Sometimes there are two values with identical time stamps for one tag. You have the following options:

    • Insert All Tag Values

    • Replace Existing Tag Values

Next Steps

OSISoft PI Source System