HEIDENHAIN TNC 155 F - Machine Parameters for Reference Mark Approach

6.1.4 Machine parameters for reference mark approach
Parameter
Velocity when approaching
reference points
X
Y
Z
IV
:
Parameter
No.
8
9
10
11
(Axis IV: Angular degrees/min with
axis designation A, B or C)
With these parameters the required velocity for approaching the reference points can be selected. The approach
speed and direction have an influence on the accuracy of the reference signal evaluation.
Axis sequence for
approaching reference points
59
0 g x Y z IV
1 c x Y IV z
=
2 n x z Y IV
=
3 n x z IV Y
=
4
2
X
IV Y z
5
G
X
IV z Y
6 2 Y X Z-7
7 = 4 Y
x IV z
8 h Y Z X IV
=
9 A Y z IV x
=
10 4 Y
IV x z
11 c Y IV z x
12 2 z
x Y IV
13 g z x IV Y
14 1 z
Y x IV
15 2 z
Y IV x’
16 2 Z
IV X Y
17 42 z
IV Y x
18 4 IV
X Y Z
19 g IV x z Y
20 2 IV
Y x z
21 G IV Y z x
22 2 IV
z x Y
23 4 IV
Z Y X
With parameter 59 the axis sequence for reference point approach is determined.
Care should be taken that the tool axis is traversed away from the workpiece first.
----
Traversing direction for
reference point approach
X
Y
Z
IV
16
17
18
19
--
l
0 A
=
plus-direction
1
2
minus-direction
With these parameters, the traversing direction when approaching the reference points is determined in relation-
ship to the “reference end position” dog. Depending on the location of the reference point on the scale, the
dog for the “reference end position” can be fixed at the end of the axis in the plus or minus direction in
relationship to the counting directions and in accordance with the “right-hand rule”.
Reference mark spacing for
0
. . . 65 535
transducers with distance-
0
c
without distance
coded reference marks
X 242
coded reference
Y 243
marks
Z
244
1000 c LS107C
IV 245
(multiplicator for 20 urn)
44