Chapter 5. Function Block Diagram (FBD)
GFK-2950C February 2018 265
5.10 Program Flow Functions
The program flow functions limit program execution or change the way the CPU executes the
application program.
The CALL function causes the logic execution to go
immediately to the designated program block, external C
block (parameterized or not), or parameterized block and
execute it. After the block’s execution is complete, control
returns to the point in the logic immediately following the
CALL instruction.
For details, refer to Program Flow Functions in Chapter 4.
Parameterized CALL.
May call a
parameterized external
block or a
parameterized block.
The ARG_PRES (Argument Present) function determines
whether a parameter value was present when the function
block instance of the parameter was invoked.
For details, refer to Program Flow Functions in Chapter 4.
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