Boolean input and output signals may need to be inverted to fulfil the logic. The
Application Configuration tool supports the adding of inversion logic to a binary signal.
All input signals have a default value that is used when the signals are not connected in the
configuration.
The input signal on glue logic function blocks can only be inverted if a
glue logic function block with lower execution order in the same cycle
time is available. Similar, the output signal can only be inverted if a glue
logic function block with higher execution order in the same cycle time is
available. Up to two input signals and two output signals can be inverted
for glue logic blocks in the same cycle time.
5.1.3 Function block execution parameters
Three function block execution parameters have an 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, these parameters must be selected from the
lists in the Application Configuration tool. The three parameters are selectable and not
selectable depending on the function block type. The cycle time may be predefined to one
value. The instance number is a counter for the total possible number of function blocks
of that type used within the application configuration.
The Execution Order and Instance Number are a combination that is predefined within a
product. It is possible to select a pair out of the list.
Section 5 1MAC108982-MB E
Protection and control engineering
80 615 series ANSI
Engineering Manual
To Next Page
Loading...
