Micromod MOD: MODCELL Application Builder Software - Manual (Page 78)

Application Builder
CONFIGURATION
5.6 SPECIAL BLOCKS
Your resource of special blocks is available at the instrument and loop levels
through the library icon. These blocks allow you to build different types of
compounds, or add description blocks to your strategy.
5.6.1 Compounding
Compounding of function blocks allows you to make application groups or
states according to process functions or areas. Individual blocks within a
compound become a logical structure or a custom algorithm that can be saved
and used to construct other databases. The state compound is the same type
of compound as offered from the toolbar. Both the state (list) and CPD (direct)
compounds are resources that are placed on the workspace, identified, and
then opened before building items into the compound. Also, these compounds
are dependent on your strategy level. A compound built and saved at the loop
level cannot be used at the instrument level. The opposite is also true.
Compounding can be further logically structured through the use of multiple
layering. The same rules apply to the lower level compounds as apply to the
upper levels. Generally, the instrument level compound is a good place for
logically grouped blocks such as an I/O module group. The loop level is the
place to integrate sequence, logic and continuous control. A maximum of 10
levels are allowed (system is level 1 and instrument is level 2).
5.6.2 List Connected Compound
The state compound is a list connected compound and appears as a green
oval. Any connections made from this compound are made using the tag list
menu of existing tag names and attributes. Connections are made using a tag
list to another block. The other block may be in another compound. In this
way, compounds may be connected together as shown below.
IDLE
HEAT EMERGENCY
CONVERSION
COOL
5-14