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Frequently asked questions (FAQ): Software Tools

• What is the purpose of the OPC HDA Client in the tools folder?
• What is the purpose of the OPC DA Browser in the tools folder?
• What is the purpose of the Database Explorer in the tools folder?
• What is the purpose of the Notes Editor in the tools folder?
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Q: What is the purpose of the OPC HDA Client in the tools folder?
A: The purpose of the OPC HDA Client is to test and confirm the operation of the OPC HDA Server. It tests all the interfaces provided by the server. Basically, you can connect to the server, add Item handles, select a data retrieval method, and process the request. The results are then displayed in the list box on the lower portion of the form.

Q: What is the purpose of the OPC DA Browser in the tools folder?
A: The purpose of the OPC DA Browser is to find out which OPC DA Servers are available on your system. You can browse and remote machines.  After selecting a server, you can view items provided by the server.

Q: What is the purpose of the Database Explorer in the tools folder?
A: The purpose of the Database Explorer is to view the current status of the historical databases. You can view a list of databases, database subsets, and variables contained in each subset. You can also select a database, subset, or variable and view its properties.

Q: What is the purpose of the Notes Editor in the tools folder?
A: The purpose of the Notes Editor is to add, delete, and edit the notes attached to values in the historical database. These annotations can be added to explain values that are out of the norm, for example when a plant upset occurs or a value is bad due to a failed instrument etc. Notes can be viewed using several filters provided. For example, you can filter on notes attached to a particular database, subset, or variable. You can also view notes over a specified time span.