1089
Function Block Instance Execution Time Section 4-2
above equation, the number of instances is not multiplied by the number of
instruction steps in the function block definition (p).
Example:
Input variables with a 1-word data type (INT): 5
Output variables with a 1-word data type (INT): 5
Function block definition section: 100 steps
Number of steps for 1 instance = 57 + (5 + 5)
× 6 steps + 100 steps + 27 steps
= 244 steps
Contents CP/CS/CJ-series CPU Units
m Call part 57 steps
n I/O parameter
transfer part
The data type is
shown in parenthe-
ses.
1-bit I/O variable (BOOL) 6 steps
1-word I/O variable (INT,
UINT, WORD)
6 steps
2-word I/O variable (DINT,
UDINT, DWORD, REAL)
6 steps
4-word I/O variable (LINT,
ULINT, LWORD, LREAL)
12 steps
p Number of instruc-
tion steps in func-
tion block definition
The total number of instruction steps (same as standard
user program) + 27 steps.
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