Getting Started OPC
Open Automation Software Tags can be defined to connect to Classic OPC Data Access 2.xx and 3.0 Servers with the built in OPC Interface.
The following steps can be used to setup communications with Classic Data Access OPC Servers.
Start Configure OAS application from the program group Open Automation Software.
Select localhost or the remote service you wish to modify with the Select button to the right of the Network Node list.
Note: Optionally select the Live Data Cloud node if you are hosting OPC data over the Internet with a standard Internet connection.
Select Add Tag to add a Tag.
Note: You can also add organizational Groups as many levels deep as you prefer and add tags to groups. To do this first add a Group to the root level, then right click on the Group in the right window to add additional Groups or Tags.
Use the Browse button to the right of the OPC Item to browse OPC Servers for the desired OPC Item.
Specify the desired OPC Update Rate for the Tag.
Select Apply Changes in the lower right to activate the communications for the OPC Item.
The value from OPC Server for the OPC Item selected will appear in the current Value field.
Note: If the data quality is bad view the article Troubleshooting OPC Communications.
To define multiple tags use one of the following optional methods.
- Use One Click OPC to automatically create tags from all OPC Items from a selected OPC Server or branch within an OPC Server. Then selectively delete the groups and tags that are not required.
- Use CSV Export and CSV Import on the toolbar in the upper right together with Microsoft Excel to add or modify tags.
- Programmatically define Tags using the free to use OASConfig component with the TagCSVImport method.
- Programmatically define Tags with the OAS REST API.
Optionally define a secondary failover OPC Server if the primary OPC Servers fails under Configure-Options-OPC.
Select the Save button on the toolbar at the top.
Create a directory on the local C: drive with the name OASDemo.
Save the file DemoTags.tags in the directory C:\OASDemo.
Under Configure – Options set the Default Tag Configuration File so when the computer restarts the tag file will automatically be loaded.