Span

The Zero attribute + the Span attribute ideally represent the maximum possible value for an input or an output tag. Do not assign a value to the Span attribute for PI Points of type digital. Changing the Span attribute for a digital tag can adversely affect the configuration of the PI Point. The Span attribute is optional and has a default value of 100.

The interface will not throw out or alter values that are outside of the range specified by the Zero and Span. The interface only uses the Zero and Span attributes to perform the conversions that are described under the SquareRoot PI Point attribute.