CLR

Clear

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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