Siemens SINUMERIK 840D sl Function Manual page 1624

Detailed Description
2.1 Spindle modes
2.1.4 Spindle positioning mode
When is positioning mode used?
The spindle positioning mode stops the spindle at the defined position and activates the
position control, which remains active until it is de-activated.
The spindle is in positioning mode with the following functions (the parameter [n], where
n=spindle number, is not required for the main spindle):
• SPOS[n]=.....
• SPOS [n]=ACP(.....)
• SPOS [n]=ACN( .....)
• SPOS [n]=AC(.....)
• SPOS [n]=IC(.....)
• SPOS [n]=DC(.....)
• SPOSA [n]=ACP(.....)
• SPOSA [n]=ACN(.....)
• SPOSA [n]=AC(.....)
• SPOSA [n]=IC(.....)
• SPOSA [n]=DC(.....) identical to SPOSA [n]= .....
• M19 or M [n]=19
SPOS [n]=AC(.....)
Spindle positioning to an absolute position (0 to 359.999 degrees). The positioning direction
is determined either by the current direction of spindle rotation (spindle rotating) or the
distancetogo.
SPOS [n]=IC(.....)
Spindle positioning to an incremental position (+/- 999999.99 degrees) in relation to the last
programmed position. The positioning direction is defined by the sign of the distance to be
traveled.
SPOS [n]=DC(.....)
Spindle positioning across the shortest path to an absolute position (0 to 359.999 degrees).
The positioning direction is determined either by the current direction of spindle rotation
(spindle rotating) or automatically by the control (spindle stationary).
SPOS[n]=.....
Identical functional sequence as SPOS [n]=DC(.....).
14
Basic logic functions: Spindles (S1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0