# FireDamper2

## `FireDamper2` (FB)

FUNCTION\_BLOCK FireDamper2

### Representation

<figure><img src="/files/d53e5523e41d15ee0d2350d25cf41e29aa095e91" alt=""><figcaption></figcaption></figure>

### Function description

#### General

This function block is used to enter the designation of a fire damper and to generate the message *xAlarm.*

#### Aggregate fault *xAlarm*

The aggregate fault *xAlarm* is activated (= TRUE) when:<br>

1. The fire damper is not fully open (*xOpen* = FALSE).\
   (Background: Any fire damper that is not fully open represents a faulty condition during normal operation).
2. The fire damper is closed (*xClosed* = TRUE).\ <br>

In all other cases the general fault is *xAlarm* is not activated (= FALSE).

### CODESYS

InOut:

| Scope       | Name         | Type     | Initial |
| ----------- | ------------ | -------- | ------- |
| Input       | `xOpen`      | `BOOL`   |         |
| Input       | `xClosed`    | `BOOL`   |         |
| Output      | `sLine1`     | `STRING` |         |
| Output      | `sLine2`     | `STRING` |         |
| Output      | `sText`      | `STRING` |         |
| Output      | `xAlarm`     | `BOOL`   |         |
| Input Const | `sEditLine2` | `STRING` | ‘’      |
| Input Const | `sEditLine1` | `STRING` | ‘Room’  |


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