Configuration of OPC Collector Specific Fields
Enter values for the OPC Collector-specific field parameters through the OPC Collector Maintenance Configuration Tab of the Historian Administrator. The following table lists the descriptions of the collector-specific fields:
| Field | Description |
|---|---|
| OPC Server Prog ID | OPC Prog ID of the locally installed OPC Server. |
| Read Mode | Read Source (DEVICE or CACHE). See the OPC Specification on the OPC Foundation website. |
| First Browse Criteri | A comma separated list of criteria used as Filter 1 in a browse for tags. |
| Second Browse Criteria | A comma separated list of criteria used as Filter 2 in a browse for tags. Note that the Tag Filters in First Browse Criteria and Second Browse Criteria are used to filter the tags returned on a browse. You can add multiple strings to each filter, separated by commas. If a filter is supplied, a tag must have one of the identified strings in the tagname in order to be returned. Consider the tags within a filter to be OR'ed and Filters 1 and 2 to be AND'ed. For example, USGB014 in Filter 1 and F_CV, B_CUALM in Filter 2 translates to: Give me all the tags that contain USGB014 AND contain F_CV OR B_CUALM. |
| Threading Model | Multithreaded or Apartment. Use apartment threaded for best compatibility. Use multithreaded for better performance if your server is also multithreaded |
| Configuration Changes |
Certain OPC Servers cannot handle processing configuration changes online. This field allows you to select whether your OPC Collector configuration changes are processed in real time or after shutting down and restarting the collector. Select the Made On-Line option to process any configuration changes immediately when you click the Update button. Select the Made After Collector Restart option to hold all configuration changes until you manually stop and restart the OPC Collector. Starting and stopping the collector in the General Tab of the Collector Maintenance screen does not constitute a manual restart. You must either start and stop the collector from the Services dialog box or the Console window. For more information, refer to the Configuring the Data Collector for Automatic Startup and the Running Collectors as Console Applications sections of the Historian Data Collectors manual. Normally, changes are applied approximately 30 seconds after the last change. |