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5 WRITING DATA TO THE CPU MODULE
5.2 Online Change
Setting the initial value for registering/changing label definition
The initial value used when registering/changing label definition can be set. ( GX Works3 Operating Manual)
■Initial value setting availability
Indicates whether or not the initial value can be set when adding or changing a label.
: Available, : Conditionally available, : Not available
*1 The initial value can be set only when a new area is assigned again.
*2 A different initial value can be set for each instance.
*3 Since the local label in FUN definition is an undefined value, initialize it by a program in the FUN definition before using it in a program.
When using GX Works3 version 1.000A
• When the label definition (the initial value or any other value) is changed, write the initial label value file to
the CPU module after the online change (ladder block). Otherwise, an error occurs when the CPU module is
powered off and on or reset, or the module operating status is changed from STOP to RUN.
• To clear all the initial values, delete the initial label value files in the CPU module. If the boot operation is
being performed, the initial label value files are stored on the SD memory card. Delete the initial label value
files on the SD memory card, and also delete the files set in the module card parameters ("Boot File
Setting"). Otherwise, an error occurs when the CPU module is powered off and on or reset, or the module
operating status is changed from STOP to RUN.
Label type Label addition Label change
Program block Global label
*1
Local label
*1
FB definition Local label
*2
*1
FUN definition Local label
*3
*3
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