> 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-modbus-library/functionblocks/samsung/samsung_intesis_idu_fc04_rxxx0_rxx38.md).

# SAMSUNG\_INTESIS\_IDU\_FC04\_RXXX0\_RXX38

## `SAMSUNG_INTESIS_IDU_FC04_RXXX0_RXX38` (FB)

`FUNCTION_BLOCK` SAMSUNG\_INTESIS\_IDU\_FC04\_RXXX0\_RXX38

### Short description

> Capture of actual values - 1 from Samsung - indoor units
>
> Typical application: Central capture of actual values from Samsung - indoor units via the Samsung - INTESIS - gateway

### Representation

<figure><img src="/files/f0bf8bce0fca804c3d38612376d506a6757417c4" alt=""><figcaption></figcaption></figure>

#### Guidelines - Software creation

The following function codes (FC) are supported: 3, 4 and 6 The following modes are supported: Modbus RTU and Modbus TCP The following transmission rates are supported (RTU): ????? The Modbus address specifications must be used for addressing.

\&#xNAN;**\*\*\*\*\*\*\*\*\*\*\*\*\*\*** \&#xNAN;**\* Functions \*** \&#xNAN;**\*\*\*\*\*\*\*\*\*\*\*\*\*\***

In this function block, the relevant actual values (registers 0 - 37) of an indoor unit are captured and evaluated (FC03: addresses XXX0 - XX37). The indoor unit is selected via the input `byIUAddress` in the range 1 - 64. The actual values of an indoor unit are available in the structure element `stIndoorUnits_ActualValues_1` available. Registers 0 - 14, 16 - 17 and 20 - 38 are read. Registers 15 and 18 - 19 may only be written. The registers in the range 39 - 61 are not read, as they are not needed for the specific application.

Measured values - matching: unclear class

InOut:

| Scope       | Name                           | Type                                 | Initial    | Comment                                                                                                                                                                                                 |
| ----------- | ------------------------------ | ------------------------------------ | ---------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Input       | `xEn`                          | `BOOL`                               | TRUE       | Enable / disable communication (TRUE = enable)                                                                                                                                                          |
| Input       | `byUnitId`                     | `BYTE`                               | 0          | Address of the device (interface) (1 .. 15)                                                                                                                                                             |
| Input       | `xUpdateActual`                | `BOOL`                               | FALSE      | <p>Update of actual values (on every rising edge<br>)</p>                                                                                                                                               |
| Input       | `xResError`                    | `BOOL`                               | FALSE      | <p>Reinitialization of the output <code>eErrorCodeCom</code> (with every<br>rising edge)</p>                                                                                                            |
| Input       | `byIUAddress`                  | `BYTE`                               | 1          | Number of the indoor unit (range 1 - 64)                                                                                                                                                                |
| Inout       | `ModbusClient`                 | `ModbusClientBase`                   |            | Client of the device                                                                                                                                                                                    |
| Output      | `stIndoorUnits_ActualValues_1` | SAMSUNG\_INTESIS\_CURRENT\_VALUES\_1 |            | Structure element with the actual values - 1 of the indoor unit                                                                                                                                         |
| Output      | `xSensorOffsetInDevice`        | `BOOL`                               |            | <p>Display showing whether the matching of the sensors of the indoor units in<br>the indoor unit must be performed (TRUE = matching in the device<br>required, FALSE = matching in the FB required)</p> |
| Output      | `xAlarm`                       | `BOOL`                               | FALSE      | Collective fault (TRUE = fault)                                                                                                                                                                         |
| Output      | `xAlarmCom`                    | `BOOL`                               | FALSE      | Collective fault - communication (TRUE = fault)                                                                                                                                                         |
| Output      | `eErrorCodeCom`                | ModbusErrorCode                      |            | Error code - communication (0 = no error)                                                                                                                                                               |
| Output      | `xBusy`                        | `BOOL`                               |            | Communication indicator (TRUE = communication)                                                                                                                                                          |
| Input Const | `tTimeUpdateActual`            | `TIME`                               | TIME#5s0ms | <p>Update interval for the processes influenced by the input<br><code>xUpdateActual</code> influenced</p>                                                                                               |


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