[ul] Option 1: Use two tags.
[list]One OPC Tag to read the raw value, one Expression Tag to do the math. The second tag will use an expression like:code*5/9[/code] This will give your final value in degrees Celsius.[/ul]
Option 2: Use Scaling properties in your OPC tag.
[ul]Since we now have a handy formula, plug in full deflection values (for a 16-bit number, that would be 0 and 65535) to get values of -56.67 and 307.42 that you can plug into the scaling properties. This is found in the Numeric section of the dialog box.[attachment=0]11-6-2013 6-44-01 AM.png[/attachment][/ul][/list:u]