Siemens SINUMERIK 840C User Manual
Page 214
09.95
6 NC Machine Data (NC MD), NC Setting Data (NC SD)
6.2 General machine data (general data)
Leading axis
coupled axis
876 - 899
Default value
Lower input limit
Upper input limit
Units
0
0
9
–
Active on
Power On
1)
The definition of these coupled axis groupings determines which axis is to be coupled when
a leading axis is traversed in Jog mode or under program control.
It is possible to define a maximum of 9 coupled axis groupings. See also MD 5019, bit 3.
892
893
894
895
896
897
898
899
884
885
886
887
888
889
890
891
876
877
878
879
880
881
882
883
Coupled axis
Leading
axis
Coupled axis
Leading
axis
Coupled axis
Leading
axis
Coupled axis
Leading
axis
NC MD
NC MD
NC MD
The number of the relevant axis must be entered as follows in the MD:
0
No axis
1
1st axis (NC MD 5640 bit 7 = 1)
2
2nd axis (NC MD 5641 bit 7 = 1)
:
The coupled motion combinations (NC MD 5156 to 5182) determine how coupled axis
groupings are to perform (coupled motion in same direction /in opposite directions/...) and the
G functions with which they can be activated. All coupled-axis groupings are activated with
G151 ... G159. All the axes that have been declared as leading axes in the MD can be
programmed, even if they have been declared as coupled-motion axes in the grouping.
For coupled axis groupings the following must be observed (alarm 84 is issued if an error
occurs):
a.
The axes in a coupled axis grouping must be in the same mode group.
b.
The axes in a coupled axis grouping must have the same position control resolution and
display resolution.
c.
The axes in a coupled axis grouping must be of the same axis type:
Rotary axis
. . . . . . . . . . . . . . . . . . . . . .
: MD 564*, 5
Actual value display modulo 360 °
. . . . . .
: MD 560*, 7
Modulo programming for rotary axes
. . . .
: MD 572*, 2
Rotary axis
. . . . . . . . . . . . . . . . . . . . . .
: MD 560*, 3
Grounding to whole/half degrees
. . . . . . .
: MD 560*, 2
Auxiliary axis . . . . . . . . . . . . . . . . . . . . .
: MD 572*, 0
Transverse axis . . . . . . . . . . . . . . . . . . .
: MD 572*, 1
_______
1)
Use of the Warm Restart function enables activation of other assignments without the necessity of a
Power On. Refer to Section Functional Descriptions for a detailed description of the Warm Restart function.
©
Siemens AG 1992 All Rights Reserved 6FC5197- AA50
6–29
SINUMERIK 840C (IA)