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6.5.4 Changing the Milling Heads
6 – 76
Example of a description table with permanent temperature compensation for
a double swivel head and a rotary table:
NR
MP7510 MP7520 MP7530
0
4
0
1
1
0
2
8
0
3
16
0
4
8
0
5
1
3
6
2
3
7
32
1
8
0
0
[END]
In order to change the milling heads, some new machine parameter values
must be defined along with the new tilting axis geometry. For this purpose a
machine parameter subfile can be entered in the MPFILE column. The machine
parameter subfile contains the new axis configuration, the new axis motors,
the assignments of the PWM outputs and the encoder inputs, etc. In this
machine parameter subfile there must be no machine parameters that
provoke a control reset:
7 7 7 7
In the standard machine parameter file, the bits in MP10 need to be set to
1 for all possible axes.
7 7 7 7
Switch off drives for the affected axes.
7 7 7 7
Choose a row in the assignment table in which a machine parameter subfile
is activated which sets the bits in MP10 to 0 for the affected axes. If the
encoder of a digital axis needs to be disconnected, then the appropriate bit
must also be set in MP20.x bit x = 0. In addition, MP2200.x = " " must be
set.
Note
Encoders with EnDat interface must not be disconnected and reconnected
during operation, since the absolute value is only read when the control is
started up.
7 7 7 7
Change the milling head.
7 7 7 7
Choose a row in the assignment table which contains a machine parameter
subfile for the new axes to set the bits in MP10 to 1 for the new axes. If an
encoder on a digital axis was disconnected and reconnected, then MP20.x
and MP2200.x must be correctly entered again.
7 7 7 7
Switch on drive for the new axis/axes.
7 7 7 7
After the drive has been switched on, the affected motors should make at
least one revolution.
TEMPCOMP
–100
–0.605e–3*W486
0
0
45
45
0
0
–45
–45
400.6
–479.8
0
0
HEIDENHAIN Technical Manual TNC 426, TNC 430
MP7550
0
0
0
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