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Input
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bExecute
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BOOL
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Rising edge: starts execution.
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bAbort
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BOOL
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If TRUE, the current processing of this function block is aborted
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aStream
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ARRAY [0..(NUM_PARSER_CHAINS - 1)] OF SMC_ITextStream
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An array of streams. aStream[0] has to contain the main program. It must be open and ready for reading. The streams 1 .. N-1 are (only) used to process subprogram calls. The streams must be of the correct type for the implementation of lookupCNCProgram.
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lookupCNCProgram
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SMC_INCLookup
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An object that looks up subprograms by name. Used to open the streams for the subprograms (aSubStreams).
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pvl
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POINTER TO SMC_VARLIST
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A variable list defining type and address for each variable that can be used from the g-code. If there are no variables in the g-code, this input is not used.
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fDefaultVel
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LREAL
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Default velocity; used if the velocity (F-word) is not specified inside the CNC file. Note: only applies to the main program, not to subprograms.
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fDefaultAccel
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LREAL
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Default acceleration; used if acceleration (E+ word) is not specified inside the CNC file Note: only applies to the main program, not to subprograms.
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fDefaultDecel
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LREAL
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Default deceleration (E- word); used if deceleration is not specified inside the CNC file. A non-negative value is expected. Note: only applies to the main program, not to subprograms.
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fDefaultVelFF
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LREAL
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Default velocity for fast forward (G0), FF word. It is used if no velocity is specified inside the CNC file. Note: only applies to the main program, not to subprograms.
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fDefaultAccelFF
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LREAL
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Default acceleration for fast forward (G0), EF+ word. It is used if no acceleration is specified inside the CNC file. Note: only applies to the main program, not to subprograms.
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fDefaultDecelFF
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LREAL
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Default deceleration for fast forward (G0), EF- word. A non-negative value is expected. It is used if no deceleration is specified inside the CNC file. Note: only applies to the main program, not to subprograms.
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b3DMode
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BOOL
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TRUE
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If TRUE, a G17 command (activation of 3D-mode) is executed implicitly. Note: only applies to the main program, not to subprograms.
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bStepSuppress
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BOOL
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When this input is TRUE, lines of the CNC program starting with ‚/’ will be ignored. Otherwise they will be processed.
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bParenthesesAsComments
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BOOL
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TRUE
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Usually, parentheses in g-code are treated as multi-line comments. If bParenthesesAsComments is set to FALSE, however, parentheses can be used in the usual ways to group expressions (‘(a+b)*c’) and for subprogram calls (‘N10 sub(17)’) in g-code. Multi-line comments can be started with ‘(‘ and end with ‘)’.
For more control over the delimiters, call the method SMC_ReadNCFromStream.SetDelimiters before calling the main method of this FB. If SetDelimiters is called, this input is ignored.
Note
Regardless of the value of this input, it is always possible to use curly braces ‘{}’ to group expressions and for subprogram calls.
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bDisableJumpBuffer
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BOOL
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This input, if TRUE, disables an internal jump buffer that is used to improve performance of g-code processing if jumps (G20) are used.
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pCustomFunTable
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POINTER TO SMC_NC_GFunctionTable
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Allows to define custom functions that can be used in G-Code expressions. If there are no custom G-Code functions, this input is null.
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aTokenModifier
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ARRAY [0..(NUM_PARSER_CHAINS - 1)] OF SMC_ITokenModifier
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Optional modifier function blocks that can change the tokens on the fly. This can be used to translate between G-Code dialects. Leave 0 if not needed. Otherwise, set all members of the array to valid function block instances.
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aSentenceModifier
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ARRAY [0..(NUM_PARSER_CHAINS - 1)] OF SMC_IGSentenceModifier
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Optional modifier function blocks that can change the g-code sentences on the fly. This can be used to translate between G-Code dialects. Leave 0 if not needed. Otherwise, set all members of the array to valid function block instances.
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Output
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bBusy
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BOOL
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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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TRUE 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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Error identification
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errorPos
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SMC_NC_SourcePosition
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The source-position where an error has been detected.
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ErrorProgramName
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STRING
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The name of the program where an error has been detected
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nActiveChain
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UDINT
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The currently active parsing chain, 0 <= nActiveChain < NUM_PARSER_CHAINS.
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Inout
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sentences
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SMC_GSentenceQueue
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Out: The output sentence queue that can be fed into SMC_NCInterpreter.
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