S1: Spindles
16.2 Operating modes
Basic Functions
1276 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Additional properties
• If the spindle is already at the programmed position after a positioning, then the NC/PLC interface signal
DB31,...DBX85.5 (spindle in position) remains set.
• If, after a positioning ("Spindle in position" signal was output) the spindle is traversed, e.g. in the JOG mode,
then the NC/PLC interface signal DB31,...DBX85.5 (spindle in position) is deleted.
If the spindle is returned to its original position in this mode, then the NC/PLC interface signal
DB31,...DBX85.5 (spindle in position) is set again. The last position selection is kept.
16.2.6 Axis mode
16.2.6.1 General functionality
Why axis mode?
For certain machining tasks (e.g. on lathes with end-face machining), the spindle not only has to be rotated with
M3, M4 and M5 and positioned with SPOS, M19 and SPOSA, but also addressed as an axis with its axis
identifier (e.g. "C").
Prerequisites
• The same spindle motor is used for spindle mode and axis mode.
• The same position measurement system or separate position measurement systems can be used for spindle
mode and axis mode.
• A position actual-value encoder is a mandatory requirement for axis mode.
• If the axis is not synchronized, e.g. M70 is programmed after POWER ON, the axis must first be referenced
with G74. Only then does the mechanical position match the programmed one.
Example:
Configurable M function
The M function used to switch the spindle to axis mode can be configured in the machine data:
MD20094 $MC_SPIND_RIGID_TAPPING_M_NR
M70
G74 C1=0 Z100
G0 C180 X50
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