S5-115F Manual STEP 5 Operations
3.3 System Operations
System operations and supplementary operations have the same limitations.
You can program them only as follows:
• In function blocks
• In the STL method of representation
Since system operations access system data, only users with system knowledge should use them.
If you want to program system operations, you must select ”SYS: OPS. Y” in the presets menu.
3.3.1 Set Operations
Like the supplementary bit operations, these set operations can change individual bits.
Table 3-26 provides an overview of the set operations.
Table 3-26. Overview of Set Operations
Operation MeaningOperand
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SU Set bit unconditionally.
A specific bit is set to ”1” in the system data range.
RU Reset bit unconditionally.
A specific bit is set to ”0” in the system data range.
Parameter
0.0 to 255.15
ID
RS
Processing set operations
Execution of set operations does not depend on the RLO.
!
Important
These operations can only be used by personnel with a thorough knowledge of the
S5-115F operating system.
EWA 4NEB 811 6149-02
3-65
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