Fagor 8040 MC CNC, Manual

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Page 46 of 48
80
40 CNC
New management
of the distance-
coded reference
mark (I0)
N
EW
F
EATURES
(S
OFT
M: 7.1
X
)
48
5 New management of the distance-coded reference mark (I0)
From this version on, the distance-coded I0 via SERCOS may be
managed using the input of the drive's second feedback.
• The axis parameters to define the distance-coded I0 are at the
CNC.
We recommend to set axis parameter POSINREF=NO. Otherwise,
it generates a movement to the position defined by axis parameter
REFVALUE.
• The parameters related to the counting of pulses (feedback) are
at the drive. At FAGOR drives, the parameters are:
The drive version must be V4.10 or V5.10 ( or greater).
6 Improved look ahead
Machining feedrate variations are now smoother thanks to filtered
acc/dec in short movements.
7 Leadscrew error compensation in both directions
Bidirectional leadscrew error compensation
From this version on, it is possible to define a different leadscrew
compensation for each moving direction.
This is defined in the leadscrew compensation tables. Each row of
the table contains the following data:
• The position of the axis to be compensated.
• The amount of error of the axis at that point. In the positive
direction.
• The amount of error of the axis at that point. In the negative
direction.
For each axis position, define the amount of error to compensate in
both directions. If the error in the negative direction has a zero value
in all positions, it is assumed that the error defined for the positive
direction is valid for both directions.
Likewise, the compensation defined in a single direction or for both,
the compensation error at the reference point does not need to be
zero.
I0TYPE (P52) I0CODI1 (P68) I0CODI2 (P69)
ABSOFF (P53) REFDIREC (P33) REFEED2 (P35)
AXISCHG (P16) LOOPCHG (P26)
GP10 Feedback2Type
NP117 ResolutionOfFeedback2
NP118 ResolutionOfLinearFeedback
PP115.0 PositionFeedback2Type