Parameter

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

Other PLC parameters

Currently covered path in the NC program (PCS)
Description	Reads the current distance covered in the NC program since program start or since the last # DISTANCE PROG START CLEAR NC command. The calculation is based on the current position in the current NC block.
Signal flow	CNC → PLC
ST path	gpCh[channel_idx]^.bahn_state.dist_prog_start
Data type	UDINT (* LREAL)
Unit	0.1 µm
Access	PLC is reading
Special features	* As of CNC Build V3.1.3104.01 the data element is provided in LREAL forma.

Stop condition
Description	Displays the condition why the current motion was stopped.
Signal flow	CNC → PLC
ST path	gpCh[channel_idx]^.bahn_state.stop_conditions_r
Data type	DINT
Value range	See Value range of stop conditions with explanations.
Access	PLC is reading

Value range of stop conditions

Constant in PLC	Value	Explanation
HLI_SC_FEEDHOLD	0x0001	Path feed stop
HLI_SC_VFG	0x0002	No axis-specific feed enable.
HLI_SC_SINGLE_BLOCK	0x0004	Single step mode active.
HLI_SC_M00_OR_M01	0x0010	M00 (programmed stop), M01 (optional stop) is active.
HLI_SC_PLC_ACKNOWLEDGE	0x0020	Stop occurs due to waiting for an acknowledgement from the SPS. This may occur as a result of the output of M or H technology functions but is not restricted to them alone.
HLI_SC_OVERRIDE_ZERO	0x0040	Override = 0.
HLI_SC_OVERRIDE_RAPID_ZERO	0x0080	Override = 0 with rapid traverse blocks
HLI_SC_DELAY_TIME	0x0200	Dwell time.
HLI_SC_CHANNEL_SYNC	0x0800	Channel synchronisation is active.
HLI_SC_IPO_INPUT_EMPTY	0x1000	Input FIFO of the interpolation is empty.
HLI_SC_IPO_INPUT_DISABLED	0x2000	Input of function blocks (e.g. motion blocks etc.) disabled.
HLI_SC_WAIT_FOR_AXES	0x8000	Stop occurs due to waiting until a commanded axis swap is completed.
HLI_SC_CHANNEL_ERROR	0x00010000	An error occurred in the channel.
HLI_SC_WAIT_TECHNO_ACK	0x00020000	Waiting for acknowledgement of M/H/ST technology functions.
HLI_SC_W_C_AFTER_COLLISION	0x00040000	After a detected collision, waiting for motion resumption.
HLI_SC_SLOPE_SUPPLY_PROBLEM	0x00080000	Block supply problem (only occurs in conjunction with HSC slope).

HLI_SC_BACK_INTERPOLATION	0x00100000	Back interpolation after tracking mode is active.
HLI_SC_STOP_REVERSIBLE	0x00200000	Stop since M00 (programmed stop) is active. However, the NC program can be processed backwards despite M00 (available as of V3.1.3039.01).
HLI_SC_BREAKPOINT_STOP	0x00400000	Stop after a breakpoint (stop point) is reached; available as of V3.1.3039.01.
HLI_SC_M0_STOP	0x02000000	Stop after an M00 function is reached
HLI_SC_M1_STOP	0x04000000	Stop after an M01 function is reached
HLI_SC_INSERT_STOP_AT_DIST	0x08000000	Stop after an M function inserted by the Control Unit “Inserting stop marks” is reached.
HLI_SC_DEC_SYN_CHAN_EMPTY	0x10000000	Decoder is waiting for synchronisation. NC channel has no jobs.

CNC objects

Name	bahn_state.stop_conditions_r
Description	Displays the condition why the current motion was stopped. The value read can be seen in the table.
Task	GEO (Port 551)
Index group	0x12330<C_ID>	Index offset	0x30
Data type	UNS32	Length	4
Attributes	read	Unit	[-]
Remarks	Alternatively, the stop condition can also be read by the HLI.