Lenze PLC Designer PLC Designer (R3-1) - Manual (Page 245)

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DMS 4.1 EN 03/2011 TD29 243
12.7.5 Set/Reset
None
Symbol:
This command (category CFC), per default part of the submenu 'Set/Reset' of the CFC
menu, removes a "Set" or "Reset" from an output element. Select the input pin of the
respective output and perform the command. The "S" or "R" symbol at the output
element will disappear.
See CFC Editor, Cursor Positions for the possible cursor position for selection.
R - Reset
Symbol:
This command (category CFC), by default part of the submenu 'Set/Reset' of the CFC
menu, assigns a "Reset" to a boolean output element, which means that the output
will be reset by a TRUE of the input and keep this value even if the input becomes
FALSE again.
Select the input pin of the respective output and perform the command.
See CFC Editor, Cursor Positions for the possible cursor position for selection.
The reset output will be indicated by a "R".
Abb. 78 Example
In this example VarOut will be set to FALSE, if VarIn delivers TRUE. VarOut retains this
value, even when VarIn springs back to FALSE.
Alternative settings concerning the Set/Reset properties of an output are None, which
means that there is no Set or Reset activity assigned, or S (Set).
S - Set
Symbol:
This command (category CFC), by default part of the submenu 'Set/Reset' of the CFC
menu, assigns a "Set" to a boolean output element, which means that the output gets
set by a TRUE of the input and keeps this value even if the input becomes FALSE again.
Select the input pin of the respective output and perform the command.
See CFC Editor, Cursor Positions for the possible cursor position for selection.
In this example VarOut will be set to TRUE, if VarIn delivers TRUE. VarOut retains this
value even when VarIn changes back to FALSE.
Alternative settings concerning the Set/Reset properties of an output are None, which
means that there is no Set or Reset activity assigned, or R (Reset).