Spindle Motions - Siemens SINUMERIK 840D sl Programming Manual

Motion synchronous actions
10.4 Actions in synchronized actions
10.4.20

Spindle motions

Function
Spindles can be positioned completely unsynchronized with respect to the part program from
synchronized actions. This type of programming is advisable for cyclic sequences or
operations that are strongly dependent on events.
If conflicting commands are issued for a spindle via simultaneously active synchronized
actions, the most recent spindle command takes priority.
Example of starting/stopping/positioning spindles
Program code
ID=1 EVERY $A_IN[1]==1 DO M3 S1000
ID=2 EVERY $A_IN[2]==1 DO SPOS=270
Example of setting the direction and speed of rotation/ positioning the spindle
Program code
ID=1 EVERY $A_IN[1]==1 DO M3 S300
ID=2 EVERY $A_IN[2]==1 DO M4 S500
ID=3 EVERY $A_IN[3]==1 DO S1000
ID=4 EVERY ($A_IN[4]==1) AND ($A_IN[1]==0) DO
SPOS=0
698
Comments
; Set the direction of rotation and
speed
; Position spindle
Comments
; Set the direction of rotation and
speed
; Specify a new direction of
rotation and a new speed
; Specify a new speed
; Position spindle
Programming Manual, 06/2009, 6FC5398-2BP20-0BA0
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