Axis-Specific Machine Data - Siemens SINUMERIK 808D Parameter Manual

Machine data

3.4 Axis-specific machine data

The MD should only be set for those channels in which free-form surfaces are also
machined.
0
> 0 : extended LookAhead is active if switched on by MD20443 $MC_LOOKAH_FFORM.
The set value for free-form surface applications is: 18.
28540 MM_ARCLENGTH_SEGMENTS
- Number of memory elements for arc length function representation DWORD
-
808d-me42 -
808d-me62 -
808d-te42 -
808d-te62 -
808d-mte40 -
808d-mte60 -
Description:
Number of memory elements available for the arc length function for parameterizing
polynomials.
If this machine data is equal to zero, a fixed interval division is used to represent
the arc length function. In this case, the calculated function is only tangent-
continuous. This can lead to discontinuities in the axis accelerations.
If the function G643 or G644 is used for smoothing and/or COMPCAD or COMPSURF, this MD
should be assigned a value of at least 10. In this case, the function also has a
constant curvature which results in a smoother progression of the path velocity, as
well as the axis velocities and accelerations.
A value of 10 is sufficient when using COMPSURF and 3-axis applications.
Up to 20 may be useful for COMPSURF and 5-axis applications.
28560 MM_SEARCH_RUN_RESTORE_MODE
- Data restore after simulation
-
- -
Description:
Bit mask to restore data after cancelation of a simulated program execution. The
following applies:
Bit 0: All frames in the data storage are restored.
3.4 Axis-specific machine data
30100 CTRLOUT_SEGMENT_NR
- Setpoint assignment: bus segment number
-
808d-me42 1
808d-me62 1
808d-te42 1
808d-te62 1
808d-mte40 1
808d-mte60 1
Description:
In this MD, enter the number of the bus segment through which the output is addressed.
220
: default LookAhead is active.
0, 0, 0, 0, 0, 0, 0, 0...
5
0, 0, 0, 0, 0, 0, 0, 0...
0, 0, 0, 0, 0, 0, 0, 0...
0, 0, 0, 0, 0, 0, 0, 0...
0, 0, 0, 0, 0, 0, 0, 0...
0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0...
0
5
0
5
0
5
C02
0 100
0 100
0 100
0 100
0 100
0 100
C02
DWORD
0 0x00000001
EXP, A01
BYTE
0 0
0 5
0 0
0 5
0 5
0 5
B1
PowerOn
0/0 S
1/1 M
0/0 S
0/0 S
0/0 S
0/0 S
K2
PowerOn
1/1 M
G2, S9
PowerOn
ReadOnly M
2/2 M
ReadOnly M
2/2 M
7/2 M
7/2 M
Parameter Manual
List Manual, 01/2017