Description

Start-up parameters

P-STUP-00033	Memory size for backward motion
Description	This parameter defines the memory size in bytes used for backward motion on the path. During start-up, the NC checks whether the required minimum size is available. If this is not the case, a warning is output and the memory size is set to the required minimum value. If the size is set to 0, the “forward/ backward motion on the path” function is not available. The maximum size is only limited by the resources available on the PC.
Parameter	fb_storage_size[i] where i = 0 to 11 (maximum number of channels: 12, application-specific)
Data type	UNS32
Data range	0 ... MAX(UNS32)
Dimension	----
Default value	0
Remarks

Channel parameters

P-CHAN-00650	Definition of interpolator functionalities
Description	This parameter defines individual functionalities and the size of the look-ahead buffer in the interpolator, i.e. it defines the number of blocks required to calculate deceleration distance and dynamic planning.
Parameter	configuration.interpolator.function
Data type	STRING
Data range	See Description
Dimension	----
Default value	FCT_IPO_DEFAULT
Remarks

Interpolation function table

Identifier	Description
FCT_IPO_DEFAULT	FCT_LOOK_AHEAD_STANDARD
FCT_LOOK_AHEAD_LOW	30 blocks
FCT_LOOK_AHEAD_STANDARD	120 blocks
FCT_LOOK_AHEAD_HIGH	190 blocks
FCT_LOOK_AHEAD_CUSTOM	Any number of look-ahead blocks in the interval [ 0; 200]. Specification by parameter P-CHAN-00653.
FCT_SYNC	Synchronisation of an axis on a path group. Example: FCT_IPO_DEFAULT \| FCT_SYNC
FCT_LOOK_AHEAD_OPT	The path velocity curve can be further improved for HSC machining by additional calculations. This generally reduces machining time. The additional calculations place greater demands on the controller hardware.
FCT_LIFT_UP_TIME	Automatic lifting/lowering of an axis (time-based coupling). Example: FCT_IPO_DEFAULT \| FCT_LIFT_UP_TIME
FCT_SHIFT_NCBL	Path-controlled offset of M functions (dwell time). Example: FCT_IPO_DEFAULT \| FCT_SHIFT_NCBL
FCT_CALC_STATE_AT_T	Calculation of path velocity at a time in the future. Function only available in combination with HSC slope and only as of V3.1.3057.0 Example: FCT_IPO_DEFAULT \| FCT_CALC_STATE_AT_T
FCT_CALC_TIME	Calculation of interpolation time to next feed block (G01,G02,G03). Example: FCT_IPO_DEFAULT \| FCT_CALC_TIME
FCT_CONTOUR_LAH	Contour look-ahead: advance output of motion blocks to the PLC as of V3.1.3104.07
FCT_DYN_POS_LIMIT	Dynamic limitation of axis positions

The look-ahead buffer size specified above applies as of CNC Build V2.11.2800 and higher. The following values apply as of CNC Build V2.11.20xx:

FCT_LOOK_AHEAD_LOW	30 blocks
FCT_LOOK_AHEAD_STANDARD	70 blocks
FCT_LOOK_AHEAD_HIGH	120 blocks

P-CHAN-00658	Maximum number of logged contour elements in the contour look-ahead.
Description	This parameter can be used to set the maximum number of stored motion blocks that can be supplied to the PLC in advance. The CNC command #CONTOUR LOOKAHEAD LOG [] can be used to activate the save function. FCT_CONTOUR_LAH must be enabled in P-CHAN-00650 for this functionality. configuration.interpolator.fct_enable[0] FCT_IPO_DEFAULT\|FCT_CONTOUR_LAH
Parameter	configuration.interpolator.contour_lookahead_log_max
Data type	UNS32
Data range	0 <= contour_lookahead_log_max < MAX_UNS32
Dimension	----
Default value	128
Remarks	Parameter available as of V3.1.3107.10