FB_DALI103QueryInstanceStatus
The function block reads the status of the selected instance from the DALI control device.
Bit | Description |
|---|---|
0 | Status of the instance (see instanceError) |
1 | Events are enabled for the instance (see instanceActive) |
2…7 | Unused (default value is 0) |
The output nInstanceStatus only contains a valid value if the function block was executed without errors (bError = FALSE).
 | The function block cannot be used when using the KL6811. |
Inputs
VAR_INPUT
bStart : BOOL;
nAddress : BYTE;
eAddressType : E_DALIAddressType := E_DALIAddressType.Short;
nInstanceAddress : BYTE := 0;
eInstanceAddressType : E_DALIInstanceAddressType := E_DALIInstanceAddressType.InstanceNumber;
eCommandPriority : E_DALICommandPriority := E_DALICommandPriority.MiddleLow;
END_VAR
Name | Type | Description |
|---|---|---|
bStart | BOOL | Execution of the DALI commands is triggered via a positive edge at this input. |
nAddress | BYTE | Address of a DALI control gear or a DALI group. |
eAddressType | Defines whether the input nAddress contains a short address (0…63) or a group address (0…31). The input nAddress has no meaning if a broadcast or a broadcast to unaddressed devices (BroadcastUnaddr) has been selected. | |
nInstanceAddress | BYTE | Instance number within a DALI control device. A DALI control device can support multiple instance numbers. |
eInstanceAddressType | Defines the access mode to the desired instance within the DALI control device. | |
eCommandPriority | Priority (low, middle low, middle, middle high, high) with which the DALI commands are sent. |
| The command priorities are supported by the KL6821 from the firmware version BD. |
Outputs
VAR_OUTPUT
bError : BOOL;
ipResultMessage : I_TcMessage;
bBusy : BOOL;
nInstanceStatus : BYTE;
END_VAR
Name | Type | Description |
|---|---|---|
bError | BOOL | This output is switched to TRUE if an error occurs during the execution. Further information about the error can be queried via the variable ipResultMessage. The output is set to FALSE again as soon as bBusy switches to TRUE. |
ipResultMessage | I_TcMessage | Interface pointer (see error evaluation) that can be used to obtain detailed information about the processing of the function block (see runtime messages). The interface pointer is valid after bBusy has changed from TRUE to FALSE. |
bBusy | BOOL | The output is set as soon as execution of the DALI commands has commenced. It remains active until all DALI commands have been processed. |
nInstanceStatus | BOOL | Status of the selected instance |
Properties
Name | Type | Access | Initial value | Description |
|---|---|---|---|---|
ipDALICommunication | I_DALICommunication | Get,Set | 0 | Interface Pointer to the communication block (see Transfer of the reference to the communication block). |
Requirements
Development environment | required PLC library |
|---|---|
TwinCAT from v3.1.4022.29 | Tc3_DALI from v3.1.4.0 |