FB_DALIV2SendDALICommand
The function block FB_DALIV2SendDALICommand is used for the general sending of a DALI command, defined by command number and, if necessary, transfer parameters. Moreover, it is possible to set whether the command is sent twice in succession and whether to wait for a response. The latter can be used, for example, to realize a fast sequence of step-up commands.
Inputs
VAR_INPUT
bStart : BOOL;
nAddr : BYTE;
eAddrType : E_DALIV2AddrType := eDALIV2AddrTypeShort;
eCommandPriority : E_DALIV2CommandPriority := eDALIV2CommandPriorityMiddle;
nCommand : INT := 0;
nParameter : BYTE := 0;
bWaitingForDALISlaveResponse : BOOL := FALSE;
bRepeatCommand : BOOL := FALSE;
bSuppressResponseBuffer : BOOL := FALSE;
nDeviceType : BYTE := 0;
END_VAR
Name | Type | Description |
---|---|---|
bStart | BOOL | The function block is activated by a positive edge at this input. |
nAddr | BYTE | The address of a device or of a group |
eAddrType | Short address, group address or broadcast | |
eCommandPriority | Priority (high, medium or low) with which the command is processed by the library. | |
nCommand | INT | Number of the DALI command to be sent |
nParameter | BYTE | Parameter for the value transfer |
bWaitingForDALISlaveResponse | BOOL | If FALSE there is no waiting for the response of the DALI control gear. Its application makes no sense in connection with any kind of query command. |
bRepeatCommand | BOOL | Decides whether the command is to be sent twice in succession. |
bSuppressResponseBuffer | BOOL | If TRUE, the internal software buffer is not filled with the response from function block FB_DALIV2Communication. |
nDeviceType | BYTE | Identifier for the device type |
Value | Description |
---|---|
0 | Standard device |
1 | Device for emergency lighting. |
2 | Device for discharge lamps. |
3 | Device for low-voltage halogen lamps. |
4 | Device for dimming incandescent lamps. |
5 | Device for converting digital signals into DC signals. |
6 | Device for light emitting diodes (LEDs). |
Inputs/outputs
VAR_IN_OUT
stCommandBuffer : ST_DALIV2CommandBuffer;
END_VAR
Name | Type | Description |
---|---|---|
stCommandBuffer | ST_DALIV2CommandBuffer | Reference to the internal structure for communication with FB_KL6811Communication (KL6811) or FB_KL6821Communication (KL6821). |
Outputs
VAR_OUTPUT
bBusy : BOOL;
bError : BOOL;
nErrorId : UDINT;
nResponseData : BYTE;
END_VAR
Name | Type | Description |
---|---|---|
bBusy | BOOL | When the function block is activated the output is set, and it remains active until execution of the command has been completed. |
bError | BOOL | This output is switched to TRUE as soon as an error occurs during the execution of a command. The command-specific error code is contained in nErrorId. Is reset to FALSE by the execution of a command at the inputs. |
nErrorId | UDINT | Contains the command-specific error code of the most recently executed command. Is reset to 0 by the execution of a command at the inputs (see error codes). |
nResponseData | BYTE | The value received from the DALI control gear, if a query command has been called. |
Requirements
Development Environment | PLC library to include |
---|---|
TwinCAT from v3.1.4020.14 | Tc2_DALI from v3.4.3.0 |