Siemens SINUMERIK 840D Function Manual page 475

With:
FA: Following axis
Block change mode:
"NOC": Block change takes place immediately
"FINE": Block change is performed in "Fine synchronism"
"COARSE": Block change is performed in "Coarse synchronism"
"IPOSTOP": Block change is performed for setpoint-based synchronism
SynPosFA: Synchronized position of the following axis
LA : Axis name of the leading axis i
i
SynPosLAi: Synchronized position of leading axis i
Zi: Counter for coupling factor of leading axis i
Ni: Denominator for coupling factor of leading axis i
Note
The parameters indexed with i must be programmed for at least one leading axis, but for no
more than five.
Only leading axes previously specified with the EGDEF command may be programmed in the
activation line.
Through the programmed "Synchronized positions" for the following axis (SynPosFA) and for
the leading axes (SynPosLA), positions are defined for which the axis grouping is interpreted as
synchronous . If the electronic gear is not in the synchronized state when the grouping is
switched on, the following axis traverses to its defined synchronized position.
The position specification of the synchronized positions is specified in the configured basic
system independently of the programmable dimensions (G70/G71).
If the axis grouping includes modulo axes, their position values are reduced in the modulo, This
way the fastest possible synchronized position is approached reliably, e. g., the next tooth from
the tooth spacing (360 degree* Zn/Ni) and the associated synchronized positions.
(So-called
thereby ensuring that they approach the fastest possible synchronized position. (So-called
relative synchronization , e.g. the next tooth gap after "centering".)
If the following interface signal has not been set for the following axis, the axis will not travel to
the synchronization position.
DB31, ... DBX26.4 (Enable following axis override)
Instead the program is stopped at the EGONSYN block and the self-clearing alarm 16771 is
issued until the above mentioned signal is set.
2. EGONSYNE
EGONSYNE(FA, block change mode, SynPosFA, Approach mode, LA
N_LA
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
relative synchronization .)
)
i
M3: Coupled axes
14.4 Electronic gear (EG)
,SynPosLA , Z_LA ,
i i i
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