# Limit connection

The application reads the tag or expression value to determine the upper or lower limit to the ramp value.

This connection is only used if the useVariableLimit attribute is True.

A read connection. Assign a tag or an expression to this connection. If you assign an expression, the application calculates the value of the expression and uses the result to determine the ramp value limits.

The rampButton graphic object element's connections element contains this connection.

## See also

connections and connection elements

useVariableLimit attribute