CLR
Clear
Libraries:
Description
The CLR block implements the CLR
ladder logic
instruction. When the rung conditions are true, the block clears the bits specified in the
Data To Clear
tag.
Ports
Input
EnableIn — Enable Input
off (default) | on
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.
Output
EnableOut — Enable Output
off (default) | on
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.
Parameters
Data To Clear — Operand data
A (default) | boolean
Specify the data bits to be cleared. Data bits are specified in the format of
tags
. In Ladder Diagrams, tags (variables) are used to represent
inputs, outputs, and internal memory with attributes such as Data
Type
, Initial Value
, and size
. To
change the attributes of the Data To Clear
, open the
Program Variables table within the Ladder Diagram
Program block.
Programmatic Use
Block Parameter:
PLCOperandTag |
Type: character vector |
Value: character vector |
Default: 'A' |
Version History
Introduced in R2019a
See Also
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