Conversions

You can tell the server to convert device data value simply settings the following properties. There are two types of units:

EU engineering unit (client scale)

IR instrument range (device scale)

No conversion converts the data into float data type.
Linear or square root conversions keep a linear or square root relation between EU and IR.

conversions_detail

Figure: Dialog view to define an OPC item conversion.

Note that definition of range limits helps some client applications and makes sense even when no conversion is specified.

If clamping is on, the data value will be limited to its High clamp/EU value when it exceeds the upper limit, and similarly with Low clamp parameter.