Installation manual
CNC 8055
CNC 8055i
MACHINE PARAMETERS
6.
SOFT: V02.2X
·225·
Axis parameters
POSINREF (P64)
Usually when working with Sercos feedback, the motor-drive system has an absolute encoder.
Thanks to this, the system knows at all times the relative position of the axis per each turn of the
motor.
In these cases, when searching home on the axis, the CNC knows the position of the axis as soon
as the home switch is pressed; thus not being necessary to move all the way to the machine
reference point.
Parameter POSINREF indicates whether the axis has to move to a marker pulse or not after hitting
the home switch.
When the distance-coded reference mark is managed through the drive's second feedback, it is
recommended to set parameter POSINREF with "NO". Otherwise, the axis moves to the position
set in REFVALUE.
The movement to the reference point is made at the feedrate set by axis parameter REFEED1 (34).
With P34=0, it moves at F0.
SWITCHAX (P65)
When having 2 axes controlled by a single servo drive, machine parameter SWITCHAX of the
secondary axis indicates which one is the main axis it is associated with. See "7.13 Axes (2)
controlled by a single drive" on page 368.
When wishing to make an additive coupling between axes, parameter SWITCHAX of the dro axis
indicates which is the main axis it is associated with. A typical application of additive coupling takes
place on milling machines when the Z axis has a second axis W coupled to it that moves by hand.
See "7.14 Additive coupling between axes" on page 374.
Parameter SWINBACK (P66) must also be set when having two axes controlled by a servo system
or wishing to do an additive coupling,
Example:
On a machine where the X and Z axes cannot move at the same time, the X axis is the main axis
and the Z axis is the secondary (associated with the X axis).
SWITCHAX for X = 0.
SWITCHAX for Z = 1.
Value Meaning
EZ It does not move.
YES It moves.
Default value: EZ
Value Meaning Value Meaning
0 None. 6 With the W axis.
1 With the X axis. 7 With the A axis.
2 With the Y axis. 8 With the B axis.
3 With the Z axis. 9 With the C axis.
4 With the U axis. 10 Spindle.
5 With the V axis.
Default value: 0
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