# PulseR

## `PulseR` (FB)

FUNCTION\_BLOCK PulseR

### Short description

> Edge-triggered pulse generation with adjustable duration and reset capability.

### Representation

<figure><img src="/files/5723ef81426fc647472070be9af8c920a22ec0b3" alt=""><figcaption></figcaption></figure>

### Interfaces

#### Inputs

| Name     | Data type | Value range | Initial value | Function                          |
| -------- | --------- | ----------- | ------------- | --------------------------------- |
| *xIN*    | BOOL      |             |               | Binary input (FALSE > TRUE)       |
| *tPT*    | TIME      |             | T#1s          | Duration of the output pulse in s |
| *xReset* | BOOL      |             |               | Binary reset input (FALSE > TRUE) |

#### Outputs

| Name  | Data type | Value range | Initial value | Function                                   |
| ----- | --------- | ----------- | ------------- | ------------------------------------------ |
| *xQ*  | BOOL      |             |               | Pulse output (FALSE = Off, TRUE = On)      |
| *tET* | TIME      | 0 … *tPT*   |               | Current duration of the pulse at *xQ* in s |

#### Setpoints / parameters

| Name      | Data type | Value range | Initial value | Function                         |
| --------- | --------- | ----------- | ------------- | -------------------------------- |
| **xTest** | BOOL      |             | FALSE         | Binary test input (FALSE > TRUE) |

### Function description

#### General

At the pulse output *xQ* is after each rising edge (FALSE > TRUE) at the binary input *xIN* and/or at the setpoint / parameter **xTest** a pulse with a duration *tPT* generates (conditions: *xReset* = FALSE and no falling edge at the input *xIN*).\
\
Every rising edge (FALSE > TRUE) at the reset input *xReset* resets the pulse output *xQ* immediately resets to FALSE.\
Every falling edge (TRUE > FALSE) at the binary input *xIN* resets the pulse output *xQ* immediately (= FALSE).\
\
The edge detection (FALSE > TRUE) on the inputs *xIN* or **xTest** has higher priority compared to the edge detection at the inputs *xReset* (FALSE > TRUE) respectively *xIN* (TRUE > FALSE).\
This results in, despite simultaneous edge detection, a pulse with a duration *tPT* is generated at the output *xQ* being generated.\
\
The setpoint/parameter **xTest** is cyclically deactivated (= FALSE).

<figure><img src="/files/90baffa0a365e163c321973555aac98357330080" alt=""><figcaption></figcaption></figure>

#### time output *tET*

When the pulse output is active *xQ* (= TRUE) the current duration of the pulse is shown at *xQ* (0.0 - *tPT*).\
When the pulse output is inactive *xQ* (= FALSE) the value T#0s is always displayed.

### CODESYS

InOut:

| Scope       | Name     | Type   | Initial    |
| ----------- | -------- | ------ | ---------- |
| Input       | `xIN`    | `BOOL` |            |
| Input       | `tPT`    | `TIME` | TIME#1s0ms |
| Input       | `xReset` | `BOOL` |            |
| Input Const | `xTest`  | `BOOL` | FALSE      |
| Output      | `xQ`     | `BOOL` |            |
| Output      | `tET`    | `TIME` |            |


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