User`s guide
Control Builder Overview
Graphic Symbols
50 UMC800 Control Builder User’s Guide Release E
1/01
Graphic Symbols
Overview
Figure 15 shows you typical Graphic Symbols and objects. Table 12 gives a description of each.
Figure 15 Typical graphic symbols/objects
Table 12 Description of graphic symbols
Item Description
1
Signal Tag - User assigned names that can be associated with the output of any item and assigned to a
display or used as a connection to a discontinuous wire.
2
Function Block - Emulates a given control function needed in the overall control strategy.
3
Softwire - Connects control functions together simply by double clicking on an Input and an Output pin.
4
Numeric Constant - Provides a numeric value as an input to a function block. May be changed through
configuration only.
5
Analog Variable - A named diagram item capable of holding a single Analog value. The value can be
connected to function block inputs with a softwire and may be changed by operator interface displays or
recipe load. Select Tag name, Decimal Place, and Engineering Units.
6
Digital Variable - A named diagram item capable of holding a single Digital value. The value can be
connected to function block inputs with a softwire and may be changed by operator interface displays or
recipe load. Select Tag name, and ON and OFF labels.
7
Text String - Annotates the control strategy. Each string can be up to 80 characters long.
8
Input Connector - Combines with the signal tag to route a signal between points anywhere in the
Function Block diagram without having to draw a softwire between them.
9
Tag Name - Some blocks have unique user-assigned tag names consisting of up to eight characters.
They are used to identify values for operator displays. Note that tag names are automatically displayed in
capital letters.