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S5-115U Manual
8.3
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.
Sections 8.3.1 through 8.3.6 describe the system operations.
8.3.1
Set Operations
Like the supplementary bit operations, these set operations can change individual bits. Table 8-26
provides an overview of the set operations.
Operation
Operand
SU
RU
ID
RS
Processing Set Operations
Execution of set operations does not depend on the RLO.
EWA 4NEB 811 6130-02b
Table 8-26. Overview of Set Operations
Set bit unconditionally
A specific bit is set to "1" in the system data range.
Reset bit unconditionally
A specific bit is set to "0" in the system data range.
Parameter
0.0 to 255.15
STEP 5 Operations
Meaning
8-65
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