Siemens SINUMERIK 840C Installation Instructions Manual page 345

6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.7 Axis-specific MD 2 (axial data 2)
1116*
f: Pulse multiplication EXE/611D/HMS 1st measuring system
Default value
1
MD 1116* is used to set the multiplication factor for the actual position pulses when using the
6FX 1145-6B... HMS measuring-circuit module. On Power On, the NC software checks to see
whether an HMS measuring-circuit module has been inserted; only when this is the case does
MD 1116* take effect.
The following multiplication factors can be specified:
HMS:
611D/PCU: 1, 2, 4, 8, 16, 32, 64, 128, 256, 512
Measuring system resolution = measuring system x 4 x MD 1116*
Note
This MD also has an effect when the measuring system of the digital drive (611-D) is used.
1124*
Default value
0
Active: When activating feedforward control
MD 1124* is used to modify the setpoint speed in proportion to acceleration. Where position
control cycles are < 1 ms, the rise process can be accelerated even more by the D
component. It should not be used with larger sampling intervals.
Note:
As from SW 4, for 8 parameter blocks
1140 *
Feedforward control factor 3rd parameter set
Default value
0
This MD has the same meaning as MD 312*, see also functional description of parameter set
switchover.
_______
1) As from SW 2
2) As from SW 3
3) As from SW 4
6–160
Lower input limit
1
1, 2, 4, 8, 16, 32, 64, 128
D component feedforward control
Lower input limit
0
Lower input limit
+0
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Siemens AG 1992 All Rights Reserved
Upper input limit
1)
128
2)
512
Upper input limit
1 000
3)
Upper input limit
1 000
SINUMERIK 840C (IA)
09.95
Active on
Power On
Warm restart
Units
–
Active on
NC Stop
Units
0.1 %
Active on
NC Stop
Units
0.1%
6FC5197- AA50