3 PROGRAM ORGANIZATION UNITS
3.2 Functions (FUN)
15
3
Creating programs
The program of a function can be created by using the engineering tool.
[Navigation window] [FB/FUN] Right-click [Add New Data]
Select "Function" for "Data Type" in "Basic Setting".
The created program is stored in the FUN file.
[CPU Parameter] [Program Setting] [FB/FUN File Setting]
Up to 64 created programs can be stored in one FUN file.
The rising edge execution instruction or falling edge execution instruction cannot be used in the function.
For details on program creation, refer to the following.
■Applicable devices and labels
The following table lists the devices and labels that can be used in function programs.
: Applicable, : Applicable only in instructions (Cannot be used to indicate the program step.), : Not applicable
*1 The following data types cannot be used.
Timer, retentive timer, counter, and long counter
Program a function name as a label in a function to set a return value of the function. Setting function names
as labels is not necessary. The data type set in "Result Type" in the properties of the function can be used.
Item Reference
How to create function programs GX Works3 Operating Manual
Number of FB/FUN files that can be written to a CPU module MELSEC iQ-F FX5 User's Manual (Startup)
Type of device/label Availability
Label (other than the pointer type) Global label
Local label
*1
Label (pointer type) Pointer type global label
Pointer type local label
Device Global device
Pointer Global pointer
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