> 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/helios/helios_kwl_modbus_gateway.md). # HELIOS\_KWL\_MODBUS\_GATEWAY ## `HELIOS_KWL_MODBUS_GATEWAY` (FB) `FUNCTION_BLOCK` HELIOS\_KWL\_MODBUS\_GATEWAY ### Representation
InOut: | Scope | Name | Type | Initial | Comment | | ----------- | ------------------- | ----------------------------------------- | --------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- | | Input | `xEn` | `BOOL` | TRUE | Enable / disable communication (TRUE = enable) | | Input | `byUnitId` | `BYTE` | 180 | Device address | | Input | `rSetpFanStage` | `REAL` | 0.0 | Setpoint - fan speed (0 - 4, 0 = Off) | | Input | `rSetpTemp` | `REAL` | 21.0 | Setpoint - comfort temperature | | Input | `xResError` | `BOOL` | FALSE |

Reinitialization of the output eErrorCodeCom in the
fault-free state (on each rising edge)

| | Input | `xUpdateActual` | `BOOL` | FALSE |

Update of actual values (on every rising edge
)

| | Input | `xUpdateSetp` | `BOOL` | FALSE |

Update of setpoints (on every rising edge
)

| | Inout | `ModbusClient` | `ModbusClientBase` | | Client of the device | | Output | `rErrorCount` | `REAL` | | Number of active errors (0 - 32) | | Output | `rWarnCount` | `REAL` | | Number of active warnings (0 - 8) | | Output | `rSetpFanStage_Fb` | `REAL` | | Currently active fan speed (0 - 4, 0 = Off) | | Output | `xChangeFilter` | `BOOL` | | 1 = filter maintenance required | | Output | `xOP` | `BOOL` | | 1 = ventilation operation | | Output | `rSetpTemp_Fb` | `REAL` | | Feedback - setpoint - comfort temperature | | 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 | `xAlarmDevice` | `BOOL` | FALSE | Collective fault - device (TRUE = fault) | | Output | `eErrorCodeDev` | HELIOS\_KWL\_MODBUS\_GATEWAY\_ERROR\_CODE | HELIOS\_KWL\_MODBUS\_GATEWAY\_ERROR\_CODE.NO\_ERROR | Error code - device (0 = no error) | | Output | `xBusy` | `BOOL` | | Communication indicator (TRUE = communication) | | Input Const | `rSetpFanStageMin` | `REAL` | 0.0 |

Currently active minimum fan speed (0 - 1, 0 = switch-off
via fan speed possible)

| | Input Const | `tTimeUpdateSetp` | `TIME` | TIME#45s0ms |

Update interval for the processes influenced by the input
xUpdateSetp influenced

| | Input Const | `tTimeUpdateActual` | `TIME` | TIME#3s0ms |

Update interval for the processes influenced by the input
xUpdateActual influenced

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