# H1\_8AO ## `H1_8AO` (FB) FUNCTION\_BLOCK H1\_8AO EXTENDS SlaveModuleDipSwitchOverwrite IMPLEMENTS ISlaveModule InOut: | Scope | Name | Type | Initial | Comment | Inherited from | | ----------- | ------------------------------ | ---------------- | ----------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------ | | Input | `itfModbusConnector` | IModbusConnector | | | BaseSlave | | Output | `xInitRunning` | `BOOL` | |

xInitRunning is TRUE, while the initialization
is performed on the first start.

| BaseSlave | | Output | `xInitFinished` | `BOOL` | |

xInitFinished is TRUE, as soon as on the first start
all parameters have been sent to the module.

| BaseSlave | | Output | `xAlarmCom` | `BOOL` | |

xAlarmCom is TRUE, when there is a
communication error.

| BaseSlave | | Output | `xBusy` | `BOOL` | |

xBusy is TRUE, when a Modbus request is being
executed.

| BaseSlave | | Output | `usiConfiguredSlaveID` | `USINT` | | Shows the currently set slave ID | BaseSlave | | Output | `eError` | ERROR | | No error = `ERROR.No_Error` | BaseSlave | | Output | `stDebugOutput` | DebugOutput | | | BaseSlave | | Input | `xEnable` | `BOOL` | TRUE |

Disables the module and resets all outputs to the
default initialization value

| BaseSlaveModule | | Input | `xReinitModule` | `BOOL` | |

Reinitializes the module and sends all parameters to the
module

| BaseSlaveModule | | Input | `xResetModule` | `BOOL` | |

Resets the module, clears the EEPROM memory, performs
a lamp test and restarts the module (Warning:
Afterwards autobauding is re-enabled)

| BaseSlaveModule | | Output | `wFirmware` | `WORD` | | Shows the current firmware of the module | BaseSlaveModule | | Output | `xAuto` | `BOOL` | |

FALSE = At least one input and/or one output are
in state eManBin <> eManBin.Auto. TRUE = All
inputs and outputs have the state eManBin =
eManBin.Auto (Note: If overriding by dip
switch (hardware) is disabled and the output is in
state eManBin <> eManBin.Auto, xAuto remains

TRUE. Evaluation is performed per output.)

| BaseSlaveModule | | Output | `xAutoSoftware` | `BOOL` | |

FALSE = At least one input and/or output are
by parameter (software) in state eManBin <>\
eManBin.Auto. TRUE = All inputs and outputs are
by parameter (software) in state eManBin =\
eManBin.Auto.

| SlaveModuleSoftOverwrite | | Output | `xAutoHardware` | `BOOL` | |

FALSE = At least one input and/or output are
by dip switch (hardware) in state eManBin <>\
eManBin.Auto. TRUE = All inputs and outputs are
by dip switch (hardware) in state eManBin =\
eManBin.Auto. (Note: If overriding by dip
switch (hardware) is disabled and the output is in
state eManBin <> eManBin.Auto, xAuto remains

TRUE. Evaluation is performed per output.)

| SlaveModuleDipSwitchOverwrite | | Input | `rAO1` | `REAL` | | AO1 output | | | Input | `rAO2` | `REAL` | | AO2 output | | | Input | `rAO3` | `REAL` | | AO3 output | | | Input | `rAO4` | `REAL` | | AO4 output | | | Input | `rAO5` | `REAL` | | AO5 output | | | Input | `rAO6` | `REAL` | | AO6 output | | | Input | `rAO7` | `REAL` | | AO7 output | | | Input | `rAO8` | `REAL` | | AO8 output | | | Input Const | `eAO8_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO8_ManValue` | `REAL` | | | | | Input Const | `iAO8_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO8_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO8_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO8_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO8_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO8_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO8_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO8_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO8_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `eAO7_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO7_ManValue` | `REAL` | | | | | Input Const | `iAO7_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO7_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO7_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO7_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO7_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO7_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO7_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO7_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO7_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `eAO6_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO6_ManValue` | `REAL` | | | | | Input Const | `iAO6_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO6_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO6_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO6_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO6_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO6_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO6_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO6_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO6_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `eAO5_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO5_ManValue` | `REAL` | | | | | Input Const | `iAO5_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO5_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO5_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO5_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO5_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO5_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO5_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO5_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO5_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `eAO4_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO4_ManValue` | `REAL` | | | | | Input Const | `iAO4_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO4_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO4_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO4_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO4_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO4_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO4_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO4_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO4_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `eAO3_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO3_ManValue` | `REAL` | | | | | Input Const | `iAO3_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO3_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO3_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO3_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO3_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO3_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO3_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO3_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO3_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `eAO2_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO2_ManValue` | `REAL` | | | | | Input Const | `iAO2_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO2_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO2_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO2_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO2_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO2_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO2_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO2_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO2_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `eAO1_ManNum` | eManNum | eManNum.Auto | | | | Input Const | `rAO1_ManValue` | `REAL` | | | | | Input Const | `iAO1_MinMaxOffsetTwoPoint` | `INT` | 0 | Offset value for the min and max range in % | | | Input Const | `xAO1_MinMaxLimitTwoPoint` | `BOOL` | FALSE | Enables the min and max limit | | | Input Const | `rAO1_Y2TwoPoint` | `REAL` | 10 | Y-axis point Y2 | | | Input Const | `rAO1_Y1TwoPoint` | `REAL` | 0 | Y-axis point Y1 | | | Input Const | `rAO1_X2TwoPoint` | `REAL` | 100 | X-axis point X2 | | | Input Const | `rAO1_X1TwoPoint` | `REAL` | 0 | X-axis point X1 | | | Input Const | `rAO1_Delta` | `REAL` | 0.25 | Specification of the delta value | | | Input Const | `eAO1_SafeState` | AOSafeStateMode | AOSafeStateMode.Percentage\_0 | State of the output in case of bus failure | | | Input Const | `xAO1_DeactivateDipSwitch` | `BOOL` | FALSE | FALSE= manual override enabled/possible |


TRUE= manual override disabled/not possible

| | Input Const | `xUseSafeStateValueBeforeInit` | `BOOL` | TRUE | | | | Input Const | `tReadFeedback` | `TIME` | TIME#5s0ms |

Query time for feedback of the analog outputs and the
manual override. (Note: The query time must not
be greater than the time of tBusTimeout .)

| | | Input Const | `tSendDelayAfterInit` | `TIME` | TIME#0ms | Delay for sending the outputs | | | Input Const | `tBusTimeout` | `TIME` | TIME#20s0ms | 0 = No bus timeout = No SafeState mode | | | Input Const | `usiSlaveID` | `USINT` | 10 | The slave address for the module | | | Output | `rAO1_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `rAO2_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `rAO3_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `rAO4_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `rAO5_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `rAO6_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `rAO7_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `rAO8_Fb` | `REAL` | | Actual voltage at the analog output (0-10 volts) | | | Output | `eAO1` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO1` | `REAL` | | Current potentiometer value (When AUTO = 0) | | | Output | `eAO2` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO2` | `REAL` | | Current potentiometer value (When AUTO = 0) | | | Output | `eAO3` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO3` | `REAL` | | Current potentiometer value (When AUTO = 0) | | | Output | `eAO4` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO4` | `REAL` | | Current potentiometer value (When AUTO = 0) | | | Output | `eAO5` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO5` | `REAL` | | Current potentiometer value (When AUTO = 0) | | | Output | `eAO6` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO6` | `REAL` | | Current potentiometer value (When AUTO = 0) | | | Output | `eAO7` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO7` | `REAL` | | Current potentiometer value (When AUTO = 0) | | | Output | `eAO8` | eManNum | | Hand - switch position (A)uto (O)n | | | Output | `rPotiAO8` | `REAL` | | Current potentiometer value (When AUTO = 0) | | --- # 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-modbusio2-lib/funktionsbausteine/h1_8ao.md?ask= ``` 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.