Fagor CNC 8060 - Page 491

Installation manual
CNC 8060
CNC 8065
CONCEPTS.
9.
(REF: 1402)
·491·
Configuration of the HSC mode (High Speed Cutting).
Check whether the generated error is greater than the one programmed or not.
Check the vV.[ch].G.LIMERROR variable to know the value of the error that cancels the
splines. This last variable returns one of the following values.
If the value returned by this variable is greater than the one programmed, it would be a good
idea to execute the HSC with more error or generate the program with less error in the CAM.
Analyze the problems occurring at specific points.
If a problem comes up at a specific point, use a trace of the oscilloscope to analyze the
following variables and locate the velocity profile that causes the problem.
Then, use the oscilloscope to analyze the following variables, sequentially because it only
admits four, to find the cause of the feedrate problem.
Analyze the various variables of the axes in the problem area to determine if there is an error
on the theoretical path, in the control loop or in the feedback. The following variables may
be used for this latter analysis.
Value. Meaning.
-1 The generated profile does not exceed the programmed error. The
programmed error does not limit the maximum feedrate of the axis.
Value Value of the error that cancels the splines.
Variable. Meaning.
V.[ch].G.BLKN Last block executed (number).
V.[ch].G.LINEN Number of program blocks executed or prepared.
V.[ch].G.PATHFEED Theoretical feedrate on the tool path.
Variable. Meaning.
V.[ch].G.PARLIMF Cause that limits the feedrate at the block being executed.
V.[ch].G.AXLIMF Logic number of the axis that limits the feedrate at the block being
executed.
V.[ch].G.PARLIMC Cause that limits the feedrate at the corner in the current block.
V.[ch].G.AXLIMC Logic number of the axis that limits the feedrate at the corner, in the
block being executed.
V.[ch].G.LIMERROR Value of the error that cancels the splines (CONTERROR mode).
V.[ch].G.PATHFEED Theoretical feedrate on the tool path.
V.[ch].G.FREAL Real feedrate on the tool path.
Variable. Meaning.
V.[ch].A.IPOPOS.xn Theoretical position value (coordinate) at the output of the
interpolator, before the transformation; i.e. in part coordinates.
V.[ch].A.ADDMANOF.xn Distance moved with G201.
V.[ch].A.INDPOS.xn Theoretical coordinate of the independent interpolator.
V.[ch].A.FILTERIN.xn Theoretical coordinate of the interpolator before the filter.
V.[ch].A.FILTEROUT.xn Theoretical coordinate of the interpolator after the filter.
V.[ch].A.LOOPTPOS.xn Theoretical coordinate at the input of the position loop.
V.[ch].A.LOOPPOS.xn Real coordinate at the input of the position loop.
V.[ch].A.TFEED.xn Instantaneous theoretical speed value at the input of the position
loop.
V.[ch].A.FEED.xn Instantaneous real speed value at the input of the position loop.
V.[ch].A.POSCMD.xn Position command for Sercos.
V.[ch].A.FTEO.xn Velocity command for Sercos (in rpm).
V.[ch].A.POSNC.xn Position feedback.