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Data Sources
Workflow provides the ability to connect to external data sources to access the data contained within those applications.
OPC Client Data Source
An OPC client provides direct access to data served by OPC Data Access (DA) servers without relying on GE Historian as a bridge between an OPC server and Workflow.
Configure the OPC server
You configure an OPC server to ensure it is connected and its status is regularly communicated to your OPC client.

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- Data Administration Introduction
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  - Data Sources
    Workflow provides the ability to connect to external data sources to access the data contained within those applications.
    - Configure a data source item for a resource
      This procedure is used to configure data source items for equipment, events, and workflows.
    - GE Historian Data Source
      The GE Historian data source allows you to connect to Historian servers to read from and write to Historian data tags. You add Historian tags to Workflow and then use those tags as data sources throughout Workflow.
    - OPC Client Data Source
      An OPC client provides direct access to data served by OPC Data Access (DA) servers without relying on GE Historian as a bridge between an OPC server and Workflow.
      - Add an OPC client
        You connect your OPC client to an OPC server that is installed on your application server computer.
      - Configure the OPC server
        You configure an OPC server to ensure it is connected and its status is regularly communicated to your OPC client.
      - Add groups to the OPC client
        You must add groups to your OPC client in order to browse the items that are stored on the OPC server.
      - Add OPC items to Workflow
      - Remove OPC items
    - OPC UA Client Data Source
      The OPC Unified Architecture (UA) client provides direct access to data served by OPC UA servers.
    - Database Service Providers
      The database service provider allows you to connect to data sources and retrieve or update information for SQL and ODBC statements and procedures.
    - Data Types
      Data types define the format that data is stored in and displayed as for variables, specifications, and other resources.
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Building and Configuring Workflows
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Operator Task List in the Workflow Client
Best Practices

Configure the OPC server

You configure an OPC server to ensure it is connected and its status is regularly communicated to your OPC client.

Before you begin

Add an OPC client.

Prerequisites: Add an OPC client

Procedure

In the navigator, click Proficy System > Proficy System > OpcClient.
From the OPC Servers list, select the OPC server you want to configure.
From the Displays panel, select HW/SW > Data Source Editor.
The Data Source Editor appears.
If applicable, select a new server Prog ID:
1. Click the ellipsis button next to the Server Prog ID field.
  The Select OPC Server Prog ID dialog box appears.
2. Select the Prog ID of the OPC server you want to connect to, and then click OK.
In the Health Monitor Frequency field, enter how often, in milliseconds, the OPC server communicates its health status to the OPC client.
Note:
- If you are using OPC DA v2.0x, the client communicates with the server at this interval to monitor the health status.
- If you are using OPC DA v3.0, the server communicates with the client at this interval to monitor the health status.
Click Refresh.
The OPC server status information is displayed.
Note: The OPC server status information is not automatically refreshed; you must refresh the status manually.
Click Save.