FB_DMXGetParameterDescription

VAR_INPUT

bStart                      : BOOL;
wDestinationManufacturerId  : WORD;
dwDestinationDeviceId       : DWORD;
byPortId                    : BYTE;
eParameterId                : E_DMXParameterId;
dwOptions                   : DWORD := 0;

bStart: The command is started by a positive edge at this input.

wDestinationManufacturerId: Unique manufacturer Id of the DMX device.

dwDestinationDeviceId: Unique device Id of the DMX device.

byPortId: Channel within the addressed DMX device. Sub-devices are addressed through the port Id. The root device always has the port Id 0.

eParameterId: The requested manufacturer specific PID.

dwOptions: Options (currently not used).

VAR_OUTPUT

bBusy                   : BOOL;
bError                  : BOOL;
udiErrorId              : UDINT;
stParameterDescription  : ST_DMXParameterDescription;

bBusy: When the block is activated the output is set, and it remains active until execution of the command has been completed.

bError: 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: Contains the command-specific error code of the most recently executed command. Only valid if bBusy is FALSE. See Error codes.

stParameterDescription: If the execution of the command has been completed (bBusy is FALSE), then information about the PID is sent to this output.

VAR_IN_OUT

stCommandBuffer           : ST_DMXCommandBuffer;

stCommandBuffer: A reference to the structure for communication (the buffer) with the FB_EL6851CommunicationEx() block.

Requirements