# CDate

## `CDate` (FB)

FUNCTION\_BLOCK CDate

### Short description

> Conversion of the date components day/month/year into a date (YYYYMMDD)

### Representation

<figure><img src="/files/e241441061e9e686824dc5abb19bc6d91d7196b6" alt=""><figcaption></figcaption></figure>

### Interfaces

#### Inputs

#### Outputs

| Name          | Data type | Value range | Initial value | Function                    |
| ------------- | --------- | ----------- | ------------- | --------------------------- |
| *datYYYYMMDD* | DATE      |             |               | Date in the format YYYYMMDD |

#### Setpoints / parameters

| Name      | Data type | Value range | Initial value | Function                                                  |
| --------- | --------- | ----------- | ------------- | --------------------------------------------------------- |
| **iDD**   | INT       |             | 1             | Specification of the day in the format DD (1..31)         |
| **iMM**   | INT       |             | 1             | Specification of the month in the format MM (1..12)       |
| **iYYYY** | INT       |             | 1970          | Specification of the year in the format YYYY (1970..2099) |

### Function description

#### General

This function block is used to form the date *datYYYYMMDD* from the individual components **iDD**, **iMM**, and **iYYYY**.\
The logical input limits of the individual components are monitored and corrected if necessary.\
This block can, for example, be used for input in a visualization.

### CODESYS

InOut:

| Scope       | Name          | Type   | Initial |
| ----------- | ------------- | ------ | ------- |
| Input Const | `iDD`         | `INT`  | 1       |
| Input Const | `iMM`         | `INT`  | 1       |
| Input Const | `iYYYY`       | `INT`  | 1970    |
| Output      | `datYYYYMMDD` | `DATE` |         |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://support.powerio.com/hub/codesys-hvac/en/hvac-library/functionblocks/general/cdate.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.