System Operations; Set Operations - Siemens SIMATIC S5 Manual
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S5-115F Manual
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.
Operation
Operand
SU
RU
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
Table 3-26. 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
Meaning
STEP 5 Operations
3-65
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