In different specification groups (e.g. Robotics, IO-Link) the topic came up that the AnalogItemType cannot be used because of the mandatory EURange Property. In addition, it is sometimes desirable to require the EngineeringUnits Property.
The EngineeringUnits Property is already defined in Part 3 so every specification could easily create their own VariableType similar to AnalogItemType without mandatory EURange and with mandatory EngineeringUnits but for better interoperability it would be good to define such a VariableType in Part 8 so everybody can use the same VariableType.