> 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-bacnet2-library/funktionsbausteine/client-objekte/clientreadproperty_manyoutputs.md). # ClientReadProperty\_ManyOutputs ## `ClientReadProperty_ManyOutputs` (FB) FUNCTION\_BLOCK ClientReadProperty\_ManyOutputs ### Short description > Updating properties of BACNET objects (read access)\ > \ > Typical application: Querying an actual temperature value via BACNET ### Representation
### Interfaces #### Inputs | Name | Data type | Value range | Initial value | Function | | --------------- | -------------------- | ----------- | ------------- | ------------------------------------------------------------------------------------------- | | *xEn* | BOOL | | TRUE | Enable / disable communication ( TRUE = enable ) | | *itfServer* | BACnet.IBACnetServer | | | Interface variable for referencing the server | | *xUpdateActual* | BOOL | | FALSE | Updating of actual values (on every rising edge) | | *xResError* | BOOL | | FALSE | Resetting the fault outputs ‘eErrorCodeCom’ and ‘eRepyErrorCode.XXX’ (on every rising edge) | #### Outputs | Name | Data type | Value range | Initial value | Function | | ---------------------- | ------------------------------------------------ | ----------- | ------------- | ------------------------------------------------------------------------------------------------------- | | *dwDeviceID\_Fb* | DWORD | | 0 | Number of the BACnet target device (range: 0 - 4194302) - feedback | | *eObjectType\_Fb* | BACnet.CmpBACnet.IEC\_BACnet\_Object\_Type | | | Type of the object - feedback | | *dwObjectInstance\_Fb* | DWORD | | 0 | Number of the object (range: 0 - 4194303) - feedback | | *ePropertyType\_Fb* | BACnet.CmpBACnet.IEC\_BACNET\_PROPERTY\_ID | | | Property type - feedback | | *eActPropertyDataType* | BACnet.CmpBACnet.IEC\_BACNET\_DATA\_TYPE | | | BACNET - data type of the property | | *sValueOutput* | STRING | | ‘’ | Display of the output for the actual value of the property | | *xValidValue* | BOOL | | FALSE | Validity status of the actual value of a property (TRUE = actual value valid) | | *rValue* | REAL | | | Actual value of the property in REAL format (floating-point number according to IEEE754 - 32 bit ) | | *xValue* | REAL | | | Actual value of the property in BOOL format | | *sValue* | STRING | | | Actual value of the property in STRING format (string) | | *diValue* | DINT | | | Actual value of the property in DINT format (signed integer) | | *udiValue* | UDINT | | | Actual value of the property in UDINT format (unsigned integer) | | *byValue* | BYTE | | | Actual value of the property in BYTE format (integer 0 - 255 ) | | *lrValue* | LREAL | | | Actual value of the property in LREAL format (floating-point number according to IEEE754 - 64 bit ) | | *stValue* | BACnet.CmpBACnet.IEC\_BACNET\_PROPERTY\_CONTENTS | | | Actual value of the property in IEC\_BACNET\_PROPERTY\_CONTENTS format (direct access to the interface) | | *xRegToServer* | BOOL | | FALSE | Status of registration with the BACnet server ( TRUE = successful registration ) | | *xConfigObject* | BOOL | | FALSE | Status of object configuration ( TRUE = successful configuration ) | | *eState* | BACnet.CmpBACnet.IEC\_BACNET\_STATUS | | | Status of communication | | *eErrorCodeCom* | BACnet.CmpBACnet.IEC\_BACNET\_STATUS | | | Most recent communication error | | *eErrorCodeDevice* | BACnet.CmpBACnet.IEC\_BACNET\_ERROR\_CODE | | | Most recent device error transmitted by the BACnet target device ( BACnet server ) | | *eReplyErrorCode* | TYPE\_OF\_REPLY\_ERROR\_CODE | | | Most recent communication error in the response to a request of its own | | *xAlarm* | BOOL | | FALSE | Collective fault ( TRUE = fault ) | | *xAlarmCom* | BOOL | | FALSE | Collective fault - communication ( TRUE = fault ) | | *xBusy* | BOOL | | | Communication display ( TRUE = communication ) | #### Setpoints / Parameters | Name | Data type | Value range | Initial value | Function | | --------------------- | ------------------------------------------ | ----------- | --------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ | | **tTimeUpdateActual** | TIME | | T#3s | Update interval for the processes affected by the input ‘xUpdateActual’ ( 0 = no automatic update, > 0 cyclical update ) | | **dwDeviceID** | DWORD | | | Number of the BACnet target device (range: 0 - 4194302) | | **eObjectType** | BACnet.CmpBACnet.IEC\_BACnet\_Object\_Type | | BACnet.CmpBACnet.IEC\_BACnet\_Object\_Type.OBJ\_ANALOG\_INPUT | Type of the object | | **dwObjectInstance** | DWORD | | | Number of the object (range: 0 - 4194303) | | **ePropertyType** | BACnet.CmpBACnet.IEC\_BACNET\_PROPERTY\_ID | | BACnet.CmpBACnet.IEC\_BACNET\_PROPERTY\_ID.PROP\_PRESENT\_VALUE | Property type | | **udiTimeoutFB** | UDINT | | 5\*1000\*1000 | Timeout duration for the instance of FB BACnet.BACnetClientReadProperty (in microseconds, 0 = no timeout, CBML ETrigATo) | ### Functional description #### General This function block transfers actual values of properties via BACNET communication (read access).\ The property to be read is selected via the parameters **dwDeviceID**, **eObjectType**, **dwObjectInstance** and **ePropertyType**.\ The validity of the actual value after a transfer is indicated at the output ‘xValidValue’.\ The output with the actual value is displayed at the output ‘sValueOutput’ after a successful transfer. #### Enable / disable communication The enable / disable of the communication is controlled via the input ‘xEn’ (Default = TRUE = enable).\ With every rising edge at the input ‘xEn’, a transfer of the actual value with the current settings is triggered.\ When disabled, the outputs assume predefined states; at the same time, a deregistration from the server occurs. #### Triggering a transmission The transfer of the property's actual value can be triggered as follows (prerequisite: xRegToServer = TRUE )\\ * every rising edge at input ‘xEn’ * every rising edge at input ‘xUpdateActual’ * cyclically at interval ‘tTimeUpdateAvtual’ ( Default: T#3s ) * once after each download * once after every change to the configuration #### Configuration of the BACNET object The BACNET object is uniquely defined by the following parameters:\\ * Device address ‘dwDeviceID’ * Object address ‘dwObjectInstance’ * Object type ‘eObjectType’ * Property type ‘ePropertyType’ #### Feedback of the current parameters The current setting values of the BACNET parameters are available at the outputs with the index ‘\_Fb’ for display purposes. #### Output ‘ePropertyDataType’ After a successful transfer, the BACNET data type of the selected property is available at this output.\ It also determines the output for displaying the actual value. #### Output ‘sValueOutput’ After a successful transfer, the name of the output variable that contains the valid actual value is available at this output. #### Output ‘xValidValue’ After a successful transfer, the validity of the transferred property is available at this output. #### Outputs for the current actual value of the property Depending on the validity of the actual value (xValidValue = TRUE) and the name of the output variable (sValueOutput)\ the actual value is available at the corresponding output. #### Output ‘xRegToServer’ The status of the internal connection to the BACNET server is permanently available at this output. Successful connection establishment to the server is a prerequisite for transmitting the setpoint. #### Output ‘xConfigObject’ The successful configuration of the BACNET object is permanently available at this output. #### Display of faults Faults are displayed at the collective output ‘xAlarm’ (= TRUE).\ It contains the current states of the communication faults (xAlarmCom) and the device faults (xAlarmDevice).\ The communication faults are displayed at output xAlarmCom (time delay: gc\_Parameters.gc\_tOnDelayxAlarmCom, Default = 60s).\ The device faults are displayed without delay at output xAlarmDevice.\ At output ‘eErrorCodeCom’, in the event of a communication error, an explanatory text for the cause is available. It always shows the cause of the last communication error.\ At output ‘eErrorCodeDevice’, in the event of a device error, an explanatory text for the cause is available. It always shows the cause of the last communication error and is updated.\ At output ‘eReplyErrorCode’, in the event of an error in the response telegram, an explanatory text for the cause is available. #### Output ‘xBusy’ This output signals the active transfer of the actual value (= TRUE). ### CODESYS InOut: | Scope | Name | Type | Initial | Comment | | ----------- | --------------------- | ----------------------------------------------- | --------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- | | Input | `xEn` | `BOOL` | TRUE | Enable / disable communication ( TRUE = enable ) | | Input | `itfServer` | `BACnet.IBACnetServer` | | Interface variable for referencing the server | | Input | `xUpdateActual` | `BOOL` | FALSE |

Updating of actual values ( on every rising edge
)

| | Input | `xResError` | `BOOL` | FALSE |

Resetting of output ‘eError’ ( on every rising
edge )

| | Output | `dwDeviceID_Fb` | `DWORD` | |

Number of the BACnet target device (range: 0 - 4194302) -
feedback

| | Output | `eObjectType_Fb` | `BACnet.CmpBACnet.IEC_BACnet_Object_Type` | | Type of the object - feedback | | Output | `dwObjectInstance_Fb` | `DWORD` | | Number of the object (range: 0 - 4194303) - feedback | | Output | `ePropertyType_Fb` | `BACnet.CmpBACnet.IEC_BACNET_PROPERTY_ID` | | Property type - feedback | | Output | `ePropertyDataType` | `BACnet.CmpBACnet.IEC_BACNET_DATA_TYPE` | | BACnet - data type of the response telegram | | Output | `sValueOutput` | `STRING` | ‘’ | Display of the output for the actual value of the property | | Output | `xValidValue` | `BOOL` | FALSE |

Validity status of the actual value of a property (TRUE
= actual value valid)

| | Output | `rValue` | `REAL` | |

Actual value of the property in REAL format (floating-point number
according to IEEE754 - 32 bit )

| | Output | `xValue` | `BOOL` | | Actual value of the property in BOOL format | | Output | `sValue` | `STRING(255)` | | Actual value of the property in STRING format (string) | | Output | `diValue` | `DINT` | | Actual value of the property in DINT format (signed integer ) | | Output | `udiValue` | `UDINT` | | Actual value of the property in UDINT format (unsigned integer ) | | Output | `byValue` | `BYTE` | | Actual value of the property in BYTE format (integer 0 - 255 ) | | Output | `lrValue` | `LREAL` | |

Actual value of the property in LREAL format (floating-point number
according to IEEE754 - 64 bit )

| | Output | `stValue` | `BACnet.CmpBACnet.IEC_BACNET_PROPERTY_CONTENTS` | |

Actual value of the property in the
IEC\_BACNET\_PROPERTY\_CONTENTS format (direct access to the
interface)

| | Output | `xRegToServer` | `BOOL` | |

Status of registration with the BACnet server ( TRUE =
successful registration )

| | Output | `xConfigObject` | `BOOL` | |

Status of object configuration ( TRUE = successful
configuration )

| | Output | `eCBMState` | `BACnet.CmpBACnet.IEC_BACNET_STATUS` | |

CBM - communication status ( update: states
DONE, ERROR and ABORT )

| | Output | `eComState` | ClientReadProperty\_ComStates | |

Status of communication ( update: states
No\_Execution, Target\_Device\_Searching, Request\_Sending,
Reply\_Waiting, Finishing )

| | Output | `eErrorCodeCom` | `BACnet.CmpBACnet.IEC_BACNET_STATUS` | | Most recent communication error | | Output | `eErrorCodeDevice` | `BACnet.CmpBACnet.IEC_BACNET_ERROR_CODE` | | Most recent device error transmitted by the BACnet target device (BACnet server) | | Output | `eReplyErrorCode` | TYPE\_OF\_REPLY\_ERROR\_CODE | |

Most recent communication error in the response to a
request of its own

| | Output | `xAlarm` | `BOOL` | | Collective fault ( TRUE = fault ) | | Output | `xAlarmCom` | `BOOL` | | Collective fault - communication ( TRUE = fault ) | | Output | `xBusy` | `BOOL` | | Communication display ( TRUE = communication ) | | Input Const | `udiTimeout` | `UDINT` | ((5 \* 1000) \* 1000) |

Timeout duration for the instance of FB
BACnet.BACnetClientReadProperty (in microseconds, 0 = no
timeout, CBML ETrigATo)

| | Input Const | `ePropertyType` | `BACnet.CmpBACnet.IEC_BACNET_PROPERTY_ID` | BACnet.CmpBACnet.IEC\_BACNET\_PROPERTY\_ID.PROP\_PRESENT\_VALUE | Property type | | Input Const | `dwObjectInstance` | `DWORD` | | Number of the object (range: 0 - 4194303) | | Input Const | `eObjectType` | `BACnet.CmpBACnet.IEC_BACnet_Object_Type` | BACnet.CmpBACnet.IEC\_BACnet\_Object\_Type.OBJ\_ANALOG\_INPUT | Type of the object | | Input Const | `dwDeviceID` | `DWORD` | | Number of the BACnet target device (range: 0 - 4194302) | | Input Const | `tTimeUpdateActual` | `TIME` | TIME#3s0ms |

Update interval for the processes affected by input
‘xUpdateActual’

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