Owner's manual

Programming Feedrates
Chapter 18
18-19
Selecting Linear Acc/Dec Values (G48.n - - nonmodal)
Programming a G48.x in your part program allows you to switch Linear
Acc/Dec values in nonmotion blocks. Axis values in G48.n blocks will
always be treated as absolute, even if the control is in incremental mode.
Below i s the format for calling G48 commands. Use this format with the
axis names assigned by your system installer:
G48.n X_Y_Z_
Where : In this mode : Units of
measure :
Sets up : Macros :
XYZ G48 N/A acceleration,deceleration,and jerk
ramps backto the AMPed values
Important: Allaxiswordsina G48are
ignored.
N/A
XYZ G48.1 in./sec
2
or
mm/sec
2
accelerationramps forLinearAcc/Dec
mode
#5631 to 5642
G48.2 in./sec
2
or
mm/sec
2
decelerationramps forLinearAcc/Dec
mode
#5651 to 5662
G48.3 in./sec
2
or
mm/sec
2
acceleration ramps for S--CurveAcc/Dec
mode
#5671 to 5682
G48.4 in./sec
2
or
mm/sec
2
decelerationramps forS--CurveAcc/Dec
mode
#5691 to 5701
G48.5 in./sec3 or
mm/sec3
jerk limits #5711 to 5722
Important: The a llowable programmed range for the axis word depends
on the c onfigured format. If you exceed these allowable ranges set by your
system installer, you may use paramacros to override this limit.
For e xample, if the allowable programmed range for the axis word is 3.4
(e.g., 999.9999 max input) and the desired jerk limit is 100,000 mm/sec
3
,
you may set Paramacro #1 to 100,000 and program a G48.5 X#1 to set the
jerk limit to 100,000. This method can be used for any of the G48
programming blocks.
Example 18.1
Allowable Programmed Range
#1 = 100000;
G48.5 X #1;
Important: The part program G48.n adjustments to Acc/Dec Ramps are
not applied to jog moves. The AMPed Linear Acc/Dec mode rates are
used when Manual Acc/Dec mode is linear.