Latch - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
15.0
Revision date
2022-11-18
Language
English

The Latch logic block holds a Boolean True value until you command it to reset. Latch blocks help capture rapidly changing binary states that might otherwise be missed. For example, use this block to capture alarm conditions. The Reliability associated with the Latch block always reports as Reliable.

The following table describes the inputs and outputs of the Latch logic block.

Table 1. Latch Block Inputs and Outputs

Name

Data Type

Exposed for Connection by Default

Description

Default Value

Inputs

Input

Boolean

Yes

Provides the Boolean value that causes latching of the output when it is set to True.

False

Reset

Boolean

Yes

Provides the Boolean value that resets the output to False when this value is set to True.

False

Outputs

Present Value 1

Boolean

Yes

Indicates the output of the block.

False

1 This input or output is the Default Element of the block.