> For the complete documentation index, see [llms.txt](https://support.powerio.com/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.powerio.com/hub/codesys-hvac/en/hvac-library/functionblocks/numeric/mannum.md).

# ManNum

## `ManNum` (FB)

FUNCTION\_BLOCK ManNum EXTENDS MANASBase IMPLEMENTS IMan

### Short description

> Manual override for a numeric signal

### Representation

<figure><img src="/files/ca02c1d46bdf030f5ccb68279046e5f847bbb0e4" alt=""><figcaption></figcaption></figure>

### Interfaces

#### Inputs

| Name  | Data type | Value range | Initial value | Function      |
| ----- | --------- | ----------- | ------------- | ------------- |
| *rIn* | REAL      |             |               | Numeric input |

#### Outputs

| Name   | Data type | Value range | Initial value | Function       |
| ------ | --------- | ----------- | ------------- | -------------- |
| *rOut* | REAL      |             |               | Numeric output |

#### Setpoints / parameters

| Name          | Data type | Value range               | Initial value | Function                                            |
| ------------- | --------- | ------------------------- | ------------- | --------------------------------------------------- |
| **rManValue** | REAL      |                           | 0.0           | Manual value                                        |
| **eManModeN** | eManNum   | eManNum.Auto, eManNum.Man | eManNum.Auto  | Operating mode for the numeric output signal *rOut* |

### Function description

#### General

This function block is used for manual override of a numeric input signal *rIn*.

#### Numeric output *rOut*

| *rIn* | **eManModeN** | *rOut*        | Notes                              |
| ----- | ------------- | ------------- | ---------------------------------- |
| Value | eManNum.Auto  | Value         | Automatic operation with *rIn*     |
| X     | eManNum.Man   | **rManValue** | Manual operation with manual value |

Legend: X = any

### Visualization

Matching visualization element from the HVACV Visu Library: **ManNum**

### Representation

<figure><img src="/files/a00ea53eaafb66f2686b149f7a613b7177c96a24" alt=""><figcaption></figcaption></figure>

#### Interfaces Visu-Element

| Name              | Data type    | Type         | Initial value | Function                                                                                                         |
| ----------------- | ------------ | ------------ | ------------- | ---------------------------------------------------------------------------------------------------------------- |
| **eManModeN**     | HVAC.eMANNUM | VAR\_IN\_OUT |               | Enter eManModeN from FB ManNum here e.g. PRG.ManNum.eManModeN                                                    |
| **rManValue**     | REAL         | VAR\_IN\_OUT |               | Enter manual value rManValue from FB ManNum here e.g. PRG.ManNum.rManValue                                       |
| **bDecimals**     | BYTE         | VAR\_INPUT   | 1             | Enter number of decimal places here e.g. 0 = XX ; 1 = XX.X ; 2 = XX.XX The display is not rounded but truncated. |
| **sUnit**         | STRING       | VAR\_INPUT   |               | Enter unit as a string format e.g. '°C' or '%'                                                                   |
| **rMinInputVisu** | REAL         | VAR\_INPUT   | 0             | Min input that appears on the numpad and lights up red when the value is undercut. Input is then not possible.   |
| **rMaxInputVisu** | REAL         | VAR\_INPUT   | 100           | Max input that appears on the numpad and lights up red when the value is exceeded. Input is then not possible.   |
| **sDialogTitle**  | STRING       | VAR\_INPUT   |               | Enter the title in string format e.g.: 'Input room temperature' - appears on the numpad during input.            |

{% hint style="info" %}
Note: VAR\_IN\_OUT interfaces must be assigned, VAR\_INPUT are optional.
{% endhint %}

### CODESYS

InOut:

| Scope       | Name        | Type    | Initial      |
| ----------- | ----------- | ------- | ------------ |
| Input       | `rIn`       | `REAL`  |              |
| Input Const | `rManValue` | `REAL`  | 0            |
| Input Const | `eManModeN` | eManNum | eManNum.Auto |
| Output      | `rOut`      | `REAL`  |              |


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