Echelon Neuron C - Manual (Page 112)

100 Using Configuration Properties to Configure Device Behavior
responsibility of the network tool to apply the formatting rules that apply to the
new type when reading or writing this configuration property. The network tool
must also set any type-inheriting configuration properties to reasonable initial
values that correspond to the new type of the network variable (and thus, the
newly inherited type of the configuration property).
If a type-inheriting configuration properties applies to more than one changeable-
type network variable (implicitly or explicitly), all the network variables in the
configuration property’s application set must share one SCPTnvType
configuration property, to ensure that all those network variables always have
the same type.
A type-inheriting configuration property cannot be shared among changeable-
type network variables and fixed-type network variables, even if all have the
same (initial) type.