One Shot Falling
The OSF block implements the
OSF instruction. The block
sets the output bit for one scan when the
from true to false.
EnableIn— Enable Input
Controls the execution of the block. EnableIn reflects the rung state preceding the block. If the rung state preceding the block is false, EnableIn is false, the block does not execute and the outputs are not updated.
EN— Enable Output
By default, EnableOut follows the state of EnableIn. If the EnableIn input to the block is false, the logic implemented by the block is not executed and EnableOut signal is set to false.
OB— Output Bit
Bit to be modified when the
rung-condition-in transitions from
false to true.
Storage Bit— Internal storage bit
Internal storage bit that retains the
rung-condition-in from the
last time the instruction was executed. Specified in the format of
tags. In Ladder Diagrams, tags (variables) are used for
representing all inputs, outputs, and internal memory with attributes such as
Initial Value, and
size. To change the attributes of the
Tag, open the Program Variables table within the
Ladder Diagram Program block.
|Type: character vector|
|Value: character vector|