Product specifications

Building Object Types
498 3BDS011222-510 B
• By using composite object types, you are able to break down your system into
blocks. This makes it easier to build and maintain the structures.
• A composite object type makes it possible to create multiple objects in more
than one structure.
As an example of how to use composite object types, consider a tank with a drain
system that is used in a milk reception, see Figure 304.
The drain system is a good example of a typical solution that can be built using a
composite object type. In this example we have a drain system that consists of a
flow transmitter and a transfer pump. We assume that the object types for the flow
transmitter and the pump (which also can be composite) already exist.
For technical reasons composite object types have to be put into a library (see
Libraries on page 485 and Appendix B, Library Handling) or have to belong to a
system extension.
Figure 304. Example of Drain System
Drain system