Siemens SINUMERIK 840DE

Feedrate Control and Spindle Motion
7.7 Feedrate for positioning axes/spindles (FA, FPR, FPRAON, FPRAOF)
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
7-23
7.7 Feedrate for positioning axes/spindles (FA, FPR, FPRAON, FPRAOF)
Function
Positioning axes, such as workpiece transport systems, tool turrets and end supports, are
traversed independently of the path and synchronized axes. A separate feedrate is therefore
defined for each positioning axis. Example: FA[A1]=500
FPRAON can be used to axially activate the revolutional feedrate for positioning axes and
spindles, and FPRAOF can be used to deactivate the respective axis again.
Programming
FA [axis]=...
FA[SPI(spindle)]=… or FA[S…]=…
Or
FPR (rotary axis ) or FPR(SPI(spindle)) or FPR(S…)
Or
FPRAON (axis, rotary axis)
Or
FPRAON(axis,SPI(spindle)) or FPRAON(axis,S…)
Or
FPRAON(SPI(spindle),rotary axis) or FPRAON(S…,rotary axis)
Or
FPRAON(SPI(spindle),SPI(spindle)) or FPRAON(S…,S…)
Or
FPRAOF(axis,SPI(spindle),…) or FPRAOF(axis,S…,…)
Parameters
FA[axis] Feedrate for the specified positioning axis in mm/min or
inch/min or deg/min
FA[SPI(spindle)]
FA[S…]
Positioning velocity (axial feed)
for the specified spindles in deg/min.
FPR Identification of the rotary axis or spindle whose
revolutional feedrate programmed in G95 is to be used as
the basis for the revolutional feedrate of the path and
synchronized axes.
FPRAON
Activate revolutional feedrate for positioning axes and
spindles axially. The first command identifies the
positioning axis/spindle that is to be traversed at a
revolutional feedrate. The second command identifies the
rotary axis/spindle from which the feedrate must be
derived.
FPRAOF Deactivate revolutional feedrate. Specification of axis or
spindle that is to stop traversing at a revolutional
feedrate.
SPI Converts the spindle number into an axis identifier; the
transfer parameter must contain a valid spindle number.
SPI is used for the indirect definition of a spindle
number.
Axis Positioning axes or geometry axes
Range of values …999 999.999 mm/min, degree/min
…39 999.9999 inch/min