FB_DMXDiscUnMute
This function block resets the mute flag of a DMX device. The mute flag specifies whether a DMX device reacts to the FB_DMXDiscUniqueBranch() command (mute flag is not set) or not (mute flag is set).
Applying a positive edge to the bStart input starts the function block, and the bBusy output goes TRUE. The wDestinationManufacturerId and dwDestinationDeviceId inputs address the DMX device. The byPortId input defines the channel within the addressed DMX device. If the execution of the command has been completed, the bBusy output goes back to FALSE. The outputs bError, udiErrorId and wControlField can now be evaluated. Further positive edges at the bStart input will be ignored as long as the function block is active (bBusy is TRUE).
Inputs
VAR_INPUT
bStart : BOOL;
wDestinationManufacturerId : WORD;
dwDestinationDeviceId : DWORD;
byPortId : BYTE;
dwOptions : DWORD := 0;
END_VARName | Type | Description |
|---|---|---|
bStart | BOOL | The function block is activated by a positive edge at this input. |
wDestinationManufacturerId | WORD | Unique manufacturer Id of the DMX device (for details, see DMX device address). |
dwDestinationDeviceId | DWORD | Unique device Id of the DMX device (for details, see DMX device address). |
byPortId | BYTE | Channel within the addressed DMX device. Sub-devices are addressed through the Port Id. The root device always has the Port Id 0. |
dwOptions | DWORD | Options (currently not used). |
Inputs/outputs
VAR_IN_OUT
stCommandBuffer : ST_DMXCommandBuffer;
END_VARName | Type | Description |
|---|---|---|
stCommandBuffer | Reference to the structure for communication (buffer) with the function block FB_EL6851Communication() |
Outputs
VAR_OUTPUT
bBusy : BOOL;
bError : BOOL;
udiErrorId : UDINT;
wControlField : WORD;
END_VARName | 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 udiErrorId. Only valid if bBusy is FALSE. |
udiErrorId | UDINT | Contains the command-specific error code of the most recently executed command. Only valid if bBusy is FALSE (see error codes). |
wControlField | WORD | If the execution of the command has been completed (bBusy is FALSE), then further information about the DMX device will be available at this output. The meaning of the individual bits is defined as follows (see table): |
Bit | Description |
|---|---|
0 - Managed Proxy Flag | This bit is set if the DMX device is a proxy device. |
1 - Sub-Device Flag | This bit is set if the DMX device supports sub-devices. |
2 - Boot-Loader Flag | This bit is set if the DMX device cannot receive any commands (e.g. whilst the firmware is being loaded). |
3 - Proxied Device Flag | This bit is set if the response was transmitted by a proxy device. |
4 - 15 | Reserve (always 0). |
Requirements
Development environment | required TC3 PLC library |
|---|---|
TwinCAT from v3.1.4020.14 | Tc2_DMX from 3.5.3.0 |