06.03
10.5 Axes and spindles
10-362
Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
10.5.20 Spindle basic data
The spindle mode of a machine axis is a subset of the general axis functionality.
For this reason, the machine data required to start up an axis have also to be
set for a spindle.
The machine data to parameterize a spindle are therefore to be found under the
axis-specific machine data (from MD 35000 onwards).
Notice
After the default machine data have been loaded, no spindle is defined.
By setting the machine data
MD 30300: IS_ROT_AX (rotary axis/spindle)
MD 30310: ROT_IS_MODULO (modulo conversion for rotary axis/spindle)
MD 30320: DISPLAY_IS_MODULO (modulo 360 degrees display for rotary
axis/spindle)
a machine axis is declared to be an endlessly rotating rotary axis whose pro-
gramming and display is carried out modulo 360 degrees.
The machine axis is converted to a spindle by defining the spindle number x
(with x = 1, 2, ...max. number of channel axes) in machine data
MD 35000: SPIND_ASSIGN_TO_MACHAX (spindle number)
The spindle number must be unambiguous within the channel axes of the
channel to which the spindle is assigned, i.e. several spindles can be defined
with spindle number 1 provided they are assigned different channels (for
assigning machine axes to channels, please refer to Subsection 10.5.1,
page 10-308).
The diagram below illustrates the spindle modes and possible transitions
between them.
Oscillation mode
gearbox
gearbox
gearbox
changed
Control mode
Positioning mode
Axis mode
SPOS and SPOSA
M3, M4, M5
M3, M4, M5
Axis name
M41–45
M41–45
SPOSA
SPOS
Synchronous mode
COUPON
COUPOF
Rigid tapping
M70
SPCOF
SPCOF
G332
G331
Fig. 10-27 Spindle modes
Spindle definition
Spindle modes
10 NC Start-Up with HMI Advanced
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