Adding Tag Scaling
Adding Tag Scaling
Users have the option of applying tag scaling when creating a new tag in the server. This allows raw data from the device to be scaled to an appropriate range for the application. There are two types of scaling: Linear and Square Root. For more information, refer to Tag Properties — Scaling.
1. To start, open the tag's Tag Properties.
2. Open the Scaling group.
3. For Type, select Linear or Square Root.
4. Specify the expected data range from the device with the high and low values and clamps. The scaled data type also allows users to specify how the resulting scaled value is presented to the OPC client application.
5. In Units, specify a string to the OPC client that describes the format or unit for the resulting engineering value. To use the Units field, an OPC client that can access the Data Access 2.0 tag properties data is required. If the client does not support these features, there is no need to configure this field.
6. Once the data has been entered as shown above, click OK.