FUNCTION_BLOCK SMC_ReadNCQueue
This FB is used for files created with Codesys V2.3; To write the queue to a file or to read the queue from a file: the FBs SMC_WriteQueueToFile and SMC_ReadQueueFromFile from SM3_Debug library can be used. This function block will read an SMC_OUTQUEUE file, which has been created by the CNC editor, from the PLC file system and provide an OutQueue structure, which typically is processed by the decoder.
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InOut:
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Scope
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Name
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Type
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Initial
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Comment
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Input
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bExecute
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BOOL
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FALSE
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Rising edge: Starts execution. While TRUE, the function block stays active
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sFileName
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STRING(255)
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''
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File path
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pBuffer
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POINTER TO BYTE
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Pointer on a sufficiently large, free data area (buffer) that is allocated in the IEC application.
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dwBufferSize
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DWORD
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0
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Size of the buffer in byte
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Output
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bDone
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BOOL
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FALSE
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TRUE, if execution finished sucessfully.
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bBusy
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BOOL
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FALSE
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TRUE, while execution of function block is not finished
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bError
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BOOL
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FALSE
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Signals, that an error has occurred within the function block
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ErrorID
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SMC_ERROR
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0
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Error identification
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poqDataOut
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POINTER TO SMC_OUTQUEUE
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Pointer on queue that has been read in.
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iObjectsRead
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UDINT
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0
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Number of SMC_GEOINFO objects, which have been read and written to the queue up to now.
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