IIN 2.2 Paramter Error

[jadamcrain]

The outstation conformance tests don't test for correct usage of IIN 2.2. A good example is when a master explicitly reads a range of values, and not all the values in the range exist.

The outstation implementation is conformant per the conformance tests, but we should implement IIN 2.2 handling for range reads so long as it doesn't break conformance tests. It probably won't since the conformance tests never ask for ranges that don't exist.