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7 Programming
NX-series Safety Control Unit User’s Manual (Z930)
7-2 Variables
7
7-2-8 Restrictions on Variable Names and Other Safety Program-related Names
An error is detected during the program check for the following names.
• Use of the same name as any of the instructions that are described in the NX-series Safety Control
Unit Instructions Reference Manual (Cat. No. Z931).
• Words that are reserved by the system
The following names must be unique. A building error will occur.
• Global variable names in the same Safety CPU Unit
• Variable names in the same POU
• Local variable names and global variable names
Reserved Words
Names That Must Be Unique
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