TRM
F1
F2
F3
F4
MU2
MU1
Lost data
Blocked function
SMAI3
SMAI2
SMAI1
IEC16000049-2-en.vsdx
IEC16000049 V2 EN-US
Figure 35: An example of function blocking
6.1.5 Function block execution parameters
GUID-ADA51480-0DE7-4D18-9B23-99EB3B5E8813 v8
Three function block execution parameters have influence on the runtime execution
of the function block within the application configuration.
• Execution Order
• Cycle Time
• Instance Number
Each time a new function block is selected, one or more of these parameters
become available for selection from the drop down lists in ACT depending on the
function block type. The Cycle Time may be predefined to one value with certain
functions. The Instance Number is a counter for the total possible number of
function blocks of that type used within an application configuration.
Execution Order and Instance Number are given in the list as a selectable pair
predefined within a product.
Figure 36 shows an example how the drop down list
could look like.
Section 6 1MRK 511 398-UEN C
Protection and control engineering
72 670 series 2.2 IEC
Engineering manual
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