Siemens SINUMERIK 840C - Manual (Page 345)

6 NC Machine Data (NC MD), NC Setting Data (NC SD) 09.95
6.7 Axis-specific MD 2 (axial data 2)
f: Pulse multiplication EXE/611D/HMS 1st measuring system 1116*
Default value Lower input limit Upper input limit Units
1 1
128 1)
512 2)
–
Active on
Power On
Warm restart
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: 1, 2, 4, 8, 16, 32, 64, 128
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.
D component feedforward control 1124*
Default value Lower input limit Upper input limit Units
0 0 1 000 0.1 %
Active on
NC Stop
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
Feedforward control factor 3rd parameter set 3) 1140 *
Default value Lower input limit Upper input limit Units
0 +0 1 000 0.1%
Active on
NC Stop
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
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SINUMERIK 840C (IA)