RES
Reset
Libraries:
Description
The RES block implements the RES
ladder logic
instruction. When the rung conditions are true, the block resets the value of
TIMER
, COUNTER
, or a CONTROL
structure.
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
EN — 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
Operand Tag To Reset — Structure to Reset
A (default) | character vector
Specify the tag
to reset. 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 Operand Tag To
Reset
, open the Program Variables table within the
Ladder Diagram Program block.
Programmatic Use
Block Parameter:
PLCTagToReset |
Type: character vector |
Value: character vector |
Default: 'A' |
Tag Structure — Structure Type
'TIMER or COUNTER' (default) | 'CONTROL'
Specify the structure type to reset.
Type | Description |
---|---|
TIMER or COUNTER | Clears the |
CONTROL | Clears the |
Programmatic Use
Block Parameter:
PLCTagDataType |
Type: character vector |
Value: 'TIMER or COUNTER'|'CONTROL' |
Default: 'TIMER or COUNTER' |
Version History
Introduced in R2019a
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