> 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/generic/simplewritecoil_fc05.md).

# SimpleWriteCoil\_FC05

## `SimpleWriteCoil_FC05` (FB)

`FUNCTION_BLOCK` SimpleWriteCoil\_FC05

### Representation

<figure><img src="/files/fab153628c32107b3c2f8f32489257ce123d3c66" alt=""><figcaption></figcaption></figure>

### **Transmission of the state of a coil (FC05) to an address (wCoilAddr)**

### CODESYS

InOut:

| Scope       | Name                         | Type                                   | Initial                                              | Comment                                                                                                                                                   |
| ----------- | ---------------------------- | -------------------------------------- | ---------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Input       | `xEn`                        | `BOOL`                                 | TRUE                                                 | Enable / disable communication (TRUE = enable)                                                                                                            |
| Input       | `byUnitId`                   | `BYTE`                                 | 0                                                    | Device address                                                                                                                                            |
| Input       | `InputValue`                 | `__SYSTEM.AnyType`                     |                                                      | Input variable for determining the state of the coil (FC05) (`BOOL`, `BYTE`)                                                                              |
| Input       | `xUpdateSetp`                | `BOOL`                                 | FALSE                                                | Update of setpoints (on every rising edge)                                                                                                                |
| Input       | `xResError`                  | `BOOL`                                 | FALSE                                                | <p>Reinitialization of the outputs <code>eErrorCodeCom</code> or<br><code>eErrorCodeDev</code> to the error-free state (on every<br>rising edge)</p>      |
| Inout       | `ModbusClient`               | `ModbusClientBase`                     |                                                      | Client of the device                                                                                                                                      |
| Output      | `wCoilAddrFb`                | `WORD`                                 |                                                      | Feedback - address of the coil for the Modbus telegram (FC05) (0 - 65535)                                                                                 |
| Output      | `eInputValueDataType`        | SIMPLE\_WRITE\_COILS\_FC05\_DATA\_TYPE | SIMPLE\_WRITE\_COILS\_FC05\_DATA\_TYPE.INVALID\_TYPE | <p>Internal classification of the data type of the variable with the<br>state of the coil (0 = invalid, 1 = <code>BOOL</code>, 2 = <code>BYTE</code>)</p> |
| Output      | `xInputValueValid`           | `BOOL`                                 | FALSE                                                | <p>Validity of the variable at the input <code>InputValue</code> (FALSE =<br>invalid, TRUE = valid)</p>                                                   |
| Output      | `xErrorFreeDataTransmission` | `BOOL`                                 | FALSE                                                | <p>Status of the data transmission (FALSE = faulty, LH-<br>transition = error-free)</p>                                                                   |
| Output      | `xAlarm`                     | `BOOL`                                 |                                                      | Collective fault (TRUE = fault)                                                                                                                           |
| Output      | `xAlarmCom`                  | `BOOL`                                 |                                                      | Collective fault - communication (TRUE = fault)                                                                                                           |
| Output      | `eErrorCodeCom`              | ModbusErrorCode                        |                                                      | Error code - communication (0 = no error)                                                                                                                 |
| Output      | `eErrorCodeDev`              | SIMPLE\_WRITE\_COIL\_ERROR\_CODE       |                                                      | Error code - device (0 = no error)                                                                                                                        |
| Output      | `xBusy`                      | `BOOL`                                 |                                                      | Communication indicator (TRUE = communication)                                                                                                            |
| Input Const | `wCoilAddr`                  | `WORD`                                 |                                                      | <p>Address of the coil for the Modbus telegram (FC05) (0 -<br>65535)</p>                                                                                  |
| Input Const | `tTimeUpdateSetp`            | `TIME`                                 | TIME#0ms                                             | <p>Update interval for the processes influenced by the input<br><code>xUpdateSetp</code> influenced</p>                                                   |


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