What the documantation means when it says to Include Lower Limit is weather or not it should include the number you have connected in it's range test. In other words, if it's checked, any value equal to or less than your limit will get coerced. If it's not checked, only those values that are less than get coerced.
So both limits are always tested, so they both must be connected. If you want to ignore the upper limit, just set the upper limit to the numeric representation max value. There's a Positive Infinity constant on the Additional Numeric Constants sub palette under the Numeric main palette that can be used for double and single precision number types. Ed
