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5.10 Program Flow Functions
The program flow functions limit program execution or change the way the CPU executes the
application program.
Function
Non-parameterized
CALL
GFK-2950C
Parameterized CALL.
May call a
parameterized external
block or a
parameterized block.
February 2018
Chapter 5. Function Block Diagram (FBD)
Description
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.
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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