The Data Management part of the CIP Specification describes addressing models for CIP
entities and the data structures of the entities themselves.
Entity addressing is done by Segments, which allows flexible usage so that many different
types of addressing methods can be accommodated. The first byte of a CIP Segment allows
a distinction between a Segment Address (0x00 – 0x9F) and a Data Type description (0xA0
– 0xDF). Two uses of this addressing scheme (Logical Segments and Data Types) are looked
at in more detail below.