Description

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

 

P-CHAN-00041

Synchronisation types of M functions

Description

In the array m_synch[i], the synchronization type of the corresponding M function is defined. Here, the field index 'i' defines the number of the M function. The value indicates the synchronisation type of the M function, i.e. when a check is made for presence of a PLC acknowledgement. A motion is not executed, or is stopped at the latest towards the end of the block, if no acknowledgement has arrived from the PLC. The synchronisation type is defined as a string constant or a hexadecimal value.

Parameter

m_synch[i] where i = 0 ... 999 (maximum number of M functions, application-specific)

Data type

STRING

Data range

See the table below.

Dimension

----

Default value

NOT_VALID *

Remarks

M functions are consumption information and must be fetched (read) by the PLC. This also applies to M functions of the type MOS, MOS_TS, MEP_MOS and MET_MOS. Otherwise, this results in a blocked interface to the HLI in the CNC and as a consequence to an unexpected processing stop.

 

*Note:

The default value for internal M functions (M0, M1, M2, M17, M29, M30, M3, M4, M19)
is NO_SYNCH.

 

Caution:

The following applies to synchronisation types with associated time and path-related pre-output (MET_SVS, MET_MOS, MEP_SVS, MEP_MOS):

If one of these synchronisation types is later changed into one which requires no pre-output value, P-CHAN-00070 (m_pre_outp[i]) must be assigned to 0. Otherwise, a license error is generated in case of microjoints if this function is not licensed or not enabled (P-CHAN-00600; alternatively P-STUP-00060).

The time calculation model for the pre-output time of M functions can also be defined for the synchronisation types MET_MOS and MET_SVS P-CHAN-00209.

Example:

m_synch[12]         MVS_SVS     0x00000002

 

Note: Programming a UNS32 variable is permissible for downward compatibility reasons.

Example: m_synch[12]         0x00000002

Constant

Value

Meaning

NOT_VAILD

-1

No valid M function

NO_SYNCH

0x00000000

No output of M function to PLC

MOS

0x00000001

Output of M function to PLC without synchronisation. If the M function is programmed within a motion block, the output of the M function is executed before the movement. M function must be fetched from PLC!

MVS_SVS

0x00000002

Output of the M function to the PLC before the motion block,
synchronisation before the motion block

MVS_SNS

0x00000004

Output of the M function to the PLC before the motion block,
synchronisation after the motion block

MNS_SNS

0x00000008

Output of the M function to the PLC after the motion block,
synchronisation after the motion block

MNE_SNS

0x00000020

Output of M function to PLC after measurement event and removal of distance to go,
synchronisation after motion block (for edge banding option only)

MVS_SLM

0x00004000

Late synchronisation, output of M function to PLC within the block, synchronisation during transition to G01/G02/G03 (implicit synchronisation)

MVS_SLP

0x00008000

Late synchronisation, output of M function to PLC within the block, synchronisation by NC command #EXPL SYN (explicit synchronisation)

MOS_TS

0x00040000

Output of the M function to the PLC before motion block without synchronisation,
CNC calculates sampling time offset for high-precision time output in the PLC.
M function must be fetched from PLC.

MEP_MOS

0x00100000

Pre-output of M function with specified path, without synchronisation.
M function must be fetched from PLC.

MET_MOS

0x00200000

Pre-output of M function with specified time, without synchronisation.
M function must be fetched from PLC.

BWD_SYNCH

0x00400000

Synchronisation of M function during backward motion with MVS_SVS

FWD_SYNCH

0x00800000

Synchronisation of M function during 'Simulated forward motion' based on the defined synchronisation type

MEP_SVS

0x01000000

Output of M function with specified path, synchronisation before next block

MET_SVS

0x02000000

Pre-output of M function with specified time, synchronisation before next block

FAW_SYNCH

0x10000000

Decoding stop (Flush and Wait): Output of M function to PLC and stop of program decoding at block end until program run is completed. FAW_SYNCH can be set in addition to other synchronisation types. M functions with FAW_SYNCH may not be used when tool radius compensation (TRC), polynomial contouring and HSC mode are active.

P-CHAN-00275

Backward movement with external position offsets

Description

The programmed path contour can be shifted by external online influences. Subsequent synchronisation can signal this position offset to the entire NC channel (see #CHANNEL INIT[CMDPOS]). This deletes the offset, i.e. an absolute programmed position then does not include an offset.

During forward/backward movement, external offsets are not moved backward like other motions defined in NC program. If there is backward movement on a program position with an external offset, there are two options:

  1. A further backward movement is not allowed since the positions specified in the NC program must also be reached in the backward direction without offset.
  2. The offset is retained and backward movement is allowed to continue. The current absolute positions defined in NC program are no longer valid since they are shifted by the currently valid offset.

 

These offsets may be caused by:

  • Manual mode actions
  • Shifting the contour with 'Jog of Path' (see [FCT-C15])
  • Compensations executed online (see [FCT-C20]

Parameter

forward_backward.with_offset

Data type

BOOLEAN

Data range

0: No backward movement is possible over the program position of an external offset. The backward movement storage is cleared automatically (as for a #BACKWARD STORAGE CLEAR).

1: A backward movement is possible beyond the program position of an external offset is possible. The active offset at the time of reversal is retained.

Dimension

----

Default value

0

Remarks

The backward movement is stopped when the following online influences occur:

- Measurement with G100

- Homing with G74

- Deselection of Online Tool Compensation with #OTC OFF

P-CHAN-00276

Programmed M00 stop during backward movements

Description

Suppress stop during backward movements with M00.

Parameter

forward_backward.disable_m00_backward

Data type

BOOLEAN

Data range

0: The process also stops in the backward direction with M00.

1: Stopping with M00 is omitted in the backward direction.

Dimension

----

Default value

0

Remarks

 

P-CHAN-00277

Programmed M00 stop during next forward movements

Description

Suppress stop in next forward movements with M00.

Parameter

forward_backward.disable_m00_2nd_forward

Data type

BOOLEAN

Data range

0: Motion is also stopped with M00 in the next forward motion.

1: Stopping with M00 is omitted in the next forward direction.

Dimension

----

Default value

0

Remarks

 

P-CHAN-00278

Programmed M01 stop during backward movement

Description

Suppress stop during backward movement with M01.

Parameter

forward_backward.disable_m01_backward

Data type

BOOLEAN

Data range

0: The process also stops in backward direction with M01.

1: Stopping with M01 is omitted in the backward direction.

Dimension

----

Default value

0

Remarks

 

P-CHAN-00279

Programmed M01 stop during next forward movement

Description

Suppression of stop on next forward movement with M01.

Parameter

forward_backward.disable_m01_2nd_forward

Data type

BOOLEAN

Data range

0: The process is also stopped in next forward direction with M01.

1: Stopping with M01 omitted in next forward direction.

Dimension

----

Default value

0

Remarks

 

P-CHAN-00308

Response at STOP marks during backward movement

Description

Suppress stop at STOP during backward movement.

Parameter

forward_backward.disable_stop_backward

Data type

BOOLEAN

Data range

0: The movement stops at the STOP mark during backward movement.

1: The STOP mark is ignored during backward movement

Dimension

----

Default value

0

Remarks

This parameter is available as of CNC Build V3.1.3039.01.

P-CHAN-00309

Response at STOP marks during forward movement

Description

Suppress stop at STOP during forward movement.

Parameter

forward_backward.disable_stop_1st_forward

Data type

BOOLEAN

Data range

0: The motion stops at the STOP mark during forward movement.

1: The STOP mark is ignored during forward movement.

Dimension

----

Default value

0

Remarks

This parameter is available as of CNC Build V3.1.3039.01.

P-CHAN-00310

Response at STOP marks during repeated forward movement

Description

Suppress stop at STOP during forward movement after previous backward movement.

Parameter

forward_backward.disable_stop_2nd_forward

Data type

BOOLEAN

Data range

0: The motion always stops at the STOP mark during repeated forward movement.

1: The STOP mark is ignored during forward movement after previous backward movement.

Dimension

----

Default value

0

Remarks

This parameter is available as of CNC Build V3.1.3039.01.