Siemens SINUMERIK FM-NC Installation And Startup Manual page 100

6 Assigning Parameters to the Control and the PLC Program
6.6 System data
Internal physical
quantities
Physical
quantities for input
and output
Index no. Physical quantity
0 Linear position
1 Angular position
2 Linear velocity
3 Angular velocity
4 Linear acceleration
5 Angular acceleration
6 Linear jerk
7 Angular jerk
8 Timer
9 K factor
V
10 Rotational feedrate
11 Linear position (compensation value)
12 Angular position (compensation value)
6-100
The standard units of the physical quantities of the machine data are as follows:
Physical quantity
Linear position
Angular position
Linear velocity
Angular velocity
Linear acceleration
Angular acceleration
Linear jerk
Angular jerk
Timing
K factor (servo gain)
V
Rotational feedrate
Linear position (compensation value)
Angular position (compensation value)
The physical quantities for the input/output of machine and setting data (V24,
MMC) can be defined system-wide via MD 10220: (activation of scaling factors)
and MD 10230: SCALING_FACTORS_USER_DEF (scaling factors of physical
quantities).
If the appropriate activation bit is not set in MD 10220 (activation of scaling
factors), then scaling is implemented internally with the conversion factors listed
below (default setting, exception K
the default settings are to remain valid, then the following scaling factors must
be entered in MD 10230.
1 mm
1 degree
1 mm/min
1 rev/min
1 m/s
1 rev/s
1 m/s
1 rev/s
1 s
1 m/min∗mm
1 mm/rev
1 mm
1 degree
SINUMERIK 840D Installation and Start-Up Guide (IAD) – 04.00 Edition
Metric
1 mm
1 degree
1 mm/min
1 rev/min
2
1 mm/s
2
1 rev/s
3
1 mm/s
3
1 rev/s
1 s
1/s
1 mm/rev
1 mm
1 degree
factor). If all bits are set in MD 10220 and if
V
Input/output Internal unit
1 mm
1 degree
1 mm/s
1 degree/s
2 2
1 mm/s
2 2
1 degree/s
3 3
1 mm/s
3 3
1 degree/s
1 s
1/s
1 mm/degree
1 mm
1 degree
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03.96
Inch
1 inch
1 degree
1 inch/min
1 rev/min
2
1 inch/s
2
1 rev/s
3
1 inch/s
3
1 rev/s
1 s
1/s
1 inch/rev
1 inch
1 degree
Scaling factor
1
1
0.016666667
6
1000
360
1000
360
1
16.66666667
1/360
1
1