Siemens SINUMERIK 840C Installation Instructions Manual page 348

09.01
u: Impulses variable incremental weighting 2nd measuring
1208*
Default value
1
Active: After Power On
Applies to feed axes only.
See MD 364*, 368*.
v: Traversing path variable incremental weighting 2nd
1212*
Default value
1
Active: After POWER ON
Applies to feed axes only.
See MD 364*, 368*.
1216*
Switchover tolerance 1st/2nd measuring system
Default value
0
3)
1000
Active: After Power On
Applies only to feed axes (not to C axes for spindles).
This machine data defines the maximum tolerance between the actual value of the first
measuring system and the actual value of the second measuring system which must not be
exceeded at the time of switching from one measuring system to another. Otherwise a setpoint
value jump occurs because the position controller tries to compensate for the change in the
actual value. To prevent this it is not possible to switch from one measuring system to another
when the tolerance is not maintained and the alarm 1016* "Measuring system switchover not
possible" is output.
1220*
Servo gain (Kv) factor 3rd parameter set
Default value
1 666
This MD has the same meaning as MD 252*, see also functional description of parameter set
switchover.
_______
1) As from SW 2
2) As from SW 3
3) As from SW 4
©
Siemens AG 1992 All Rights Reserved
SINUMERIK 840C (IA)
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
1)
system
Lower input limit
0
measuring system
Lower input limit
0
Lower input limit
0
Lower input limit Upper input limit
0
80 000 (as from SW 5)
6FC5197- AA50
6.7 Axis-specific MD 2 (axial data 2)
Upper input limit
1)
65000
2)
9999 9999
1)
Upper input limit
1)
65 000
units (MS)
2)
9999 9999
Upper input limit
16 000 units (MS)
10 000
Active on
Power On
Units
–
Active on
Power On
Units
Active on
Power On
Units
Active on
Power On
Units
-1
0.01s
6–163