Create a Calculation Collector

Before you begin

  1. Deploy Proficy Historian for Azure Cloud.
  2. Install collectors. You can install them on-premises or on a VNet (which can be different from the one on which Proficy Historian for Azure Cloud is deployed).
    Important: If installing on a VNet, it is recommended that you install the Calculation collector on the virtual machine deployed in the same VNet the Data Archiver is running.

About this task

The Calculation collector performs calculations on tag data that is stored in Data Archiver. It stores the calculation results in new tags. You can then access this data and plot a trend chart or analyze it.
Features: The Calculation collector performs calculations on the following values:
  • Current values of other Historian tags in the same archiver.
  • Previous raw samples of other tags in the same archiver.
  • Calculated values of other Historian tags in the same archiver, such as minimum, maximum, average, or standard deviation. You can specify a time range for these calculations or perform a filtered query. You can use the resulting single number in a calculation.
  • Interpolated values of other Historian tags in the same archiver.
  • Any data retrievable using a VBScript, file I/O, ADO, and so on.
Advantages of using the Calculation collector:
  • The Calculation collector can keep a history of the calculated values.
  • It can perform thousands of calculations per second. Therefore, it is generally preferred to a VB SDK program performing the same functions.
  • It can perform calculations on data stored in the following sources:
    • A SCADA database (such as iFIX)
    • A VB SDK program
    • A Historian collector (using input scaling)
    • By the Calculation collector
    • The Historian OLE DB provider
    • Reporting tools such as Crystal Reports
    • The Historian Excel Add-In

Procedure

  1. Run Command Prompt as an administrator.
  2. Run the AzureCloudHistorianConfigurationUtility.exe file. It is provided along with the collectors installer. After you install collectors, it will be available in the C:\Program Files\GE Digital\Historian Cloud Config folder by default.
  3. Enter the number corresponding to creating a collector instance.
    A list of collectors that you can create appears.
  4. Enter the number corresponding to the collector that you want to create.
  5. Enter the following details:
    Field Description
    Interface Name Enter the name that you want to provide for the collector instance.
    Azure Load Balancer IP

    Enter the Azure Load Balancer IP. A value is required.

    Tip: To find the Azure Load Balancer IP:
    1. Go to the Azure portal.
    2. Go to the Resource Group that was specified during deployment.
    3. Select the cluster_name-IP to access the resource of type Public IP Address.
    4. Select or copy the IP Address.
    Username Enter the username to connect to Proficy Historian for Azure Cloud. A value is required.
    Password Enter the password to connect to Proficy Historian for Azure Cloud. A value is required.
    Tip: For the default user, ihCloudHistAdmin, this is the value you entered in the Password field at the time of deployment.
    The Calculation collector is created and started.