Siemens SINUMERIK 828D Function Manual page 1285

Synchronization procedure
When the spindle is switched on, the spindle can be synchronized as follows:
• The spindle is started with a spindle speed (S value) and a spindle rotation (M3 or M4) and synchronized with
the next zero mark of the position measurement system or with the next Bero signal.
• The spindle is to be positioned from standstill using SPOS, M19 or SPOSA. The spindle synchronizes with the
next zero mark of the position measurement system or with the next Bero signal. It is then positioned to the
programmed position.
• The spindle can be synchronized from the movement (after M3 or M4) using SPOS, M19 or SPOSA.
The responses are as follows:
- With SPOS=<Pos>, SPOS=DC(<Pos>) and SPOS=AC(<Pos>), the direction of motion is retained and the
position is approached.
- With SPOS = ACN(<Pos>) or SPOS = ACP(<Pos>), the position is always approached with a negative
or positive direction of motion. If necessary, the direction of motion is inverted prior to positioning.
• Crossing the zero mark in JOG mode by means of direction keys in speed control mode.
Note
If does not make any difference whether the synchronization procedure is initiated from
the part program, FC 18 or synchronized actions.
Note
During synchronization of the spindle, all four possible home position values are effective
depending on the measuring system selected. The measurement system offset has the
same effect.
The following machine data must be observed:
•
•
•
If a non-homed spindle with SPOS=IC(...) and a path < 360 degrees is positioned, it
may be the case that the zero mark is not crossed and the spindle position is still not
synchronized with the zero mark. This can happen:
•
•
Basic Functions
Function Manual, 09/2011, 6FC5397-0BP40-2BA0
MD34080 $MA_REFP_MOVE_DIST
(Reference point distance/destination point for a distance­coded system)
MD34090 $MA_REFP_MOVE_DIST_CORR
(Reference point offset/absolute offset, distance­coded)
MD34100 $MA_REFP_SET_POS
(Reference point value, with distance-coded system without any significance)
after POWER ON
by setting the axial NC/PLC interface signals:
DB31, ... DBX17.5 (resynchronize spindle when positioning 2)
DB31, ... DBX17.4 (resynchronize spindle when positioning 1)
S1: Spindles
16.3 Reference / synchronize
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