How To Set The Software Travel Limits - Fagor CNC 8060 Installation Manual

11.6.1
11.
CNC 8060
CNC 8065
(R : 1709)
EF
·582·

How to set the software travel limits.

Considerations for setting the software travel limits.
The software travel limits may be positive or negative, but the lower limits must be smaller
than the upper ones; otherwise, the axis might not move in any direction.
If when changing the limits, an axis is positioned beyond them, that axis can only be moved
in the direction that places it within those limits.
If for an axis, both upper and lower limits of a group are set to ·0·, the CNC cancels those
limits on that axis and applies the ones of the other group.
The software limits are always applied in radius, regardless of the setting of parameter
DIAMPROG, of the active function G151/G152 and of the method chosen to set them.
Default software travel limits (first software travel limits).
The default software travel limits, those assumed by the CNC on power-up, are set by
machine parameters; if both parameters are set to ·0·, these limits are canceled.
Parameter. Meaning.
LIMIT+ Upper software travel limits.
LIMIT- Lower software travel limits.
These software travel limits may be changed by program or MDI using the following functions
and variables. When modifying the limits with these functions or variables, the CNC assumes
those values as the new limits in this group.
Function. Variable.
G198 (V.)[ch].A.NEGLIMIT.xn
G199 (V.)[ch].A.POSLIMIT.xn
Setting both upper and lower limits of an axis to ·0· cancels the limits, regardless of their
values in the machine parameters. In this case, the CNC will apply the second software travel
limits to the axis.
The new limits will be maintained after executing an M02 or M30, and after an emergency
or a reset. On power-up or after validating the axis machine parameters the CNC assumes
the software limits set by the machine parameters.
Modifying the software travel limits with functions G198/G199.
When programming G198 or G199, the CNC interprets that the coordinates programmed
next set the new software limits.
G198 X-1000 Y-1000
(New lower limits X=-1000 Y=-1000)
G199 X1000 Y1000
(New upper limits X=1000 Y=1000)
Depending on the active work mode G90 or G91, the position of the new limits will be defined
in absolute coordinates (G90) in the machine reference system or in incremental coordinates
(G91) referred to the current active limits.
G90 G198 X-800
(New lower limit X=-800)
G91 G198 X-700
(New incremental lower limit X=-1500)
I n s ta ll a t io n ma n u a l.
Meaning.
Lower software travel limits.
Upper software travel limits.