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- Simple - simple, standard write
- SBOw: Select (Select Before Operate With Enhanced Security) - the first phase (Select) of the two-phase writing to the $ctlVal item of the $SBOw control structure (e.g. Obj3CSWI2$CO$Pos$SBOw) which contains the items $ctlVal, $origin$orCat, $origin$orIdent, $ctlNum, $T, $Test, $Check.
- SBOw: Operate (Select Before Operate With Enhanced Security) - the second phase (Operate) of the two-phase writing to the $ctlVal item of the $Oper control structure (e.g. Obj3CSWI2$CO$Pos$OperObj3CSWI2$CO$Pos$Oper) which contains the items $ctlVal, $origin$orCat, $origin$orIdent,
- SBOw: Cancel (Select Before Operate With Enhanced Security) - the cancellation of the write after the 1st phase (Select) by writing to the $ctlVal item of the $Cancel control structure (e.g. Obj3CSWI2$CO$Pos$Cancel) which contains the items $ctlVal, $origin$orCat, $origin$orIdent, $ctlNum, $T, $Test, $Check.
The following write parameters do not apply to Simple write but only to SBOw.
Interlock Check - setting the appropriate bit in $Check item for the Select/Operate phase of SBOw.
Synchro Check - setting the appropriate bit in $Check item for the Select/Operate phase of SBOw.
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Time - if the option is checked, the time of the written value is written into the $T item for the Select/Operate phase of SBOw (otherwise zero time).
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