Siemens SINUMERIK 840D sl Function Manual page 249

It is thus possible for each curve (except for the special case of a straight line) for the leading
axis to influence the following axis in a non-linear manner. The function can only be used with
EGONSYN.
The function EG can be activated with curve tables with EGON.
The function EGONSYNE is available for approaching the synchronized position of the
following axis with a specified approach mode.
For special applications, it may be advisable configure the position controller as a PI
controller.
Knowledge of the control technology and measurements with servo trace are an absolute
prerequisite for using this function.
References: /IAD/. Commissioning Guide, /FB1/ Function Manual, Basic Functions; Speeds,
Setpoint/Actual Value Systems, Closed-Loop Control System (G2)
Coupling type
The following axis motion can be derived from either of the following:
• Setpoints of leading axes
• Actual values of leading axes
The reference is set in the definition call for the EG axis group:
EGDEF
(see Chapter "Definition of an EG Axis Group")
Coupling factor
The coupling factor must be programmed for each leading axis in the group. It is defined by
numerator/denominator.
Coupling factor values numerator and denominator are entered per leading axis with the
following activation calls:
EGON
EGONSYN
EGONSYNE
(see Chapter "Definition of an EG Axis Group")
Number of EG axis groups
Several EG axis groups can be defined at the same time. The maximum possible number of
EG axis groupings is set in the following machine data:
MD11660 $MN_NUM_EG
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
CAUTION
M3: Coupled axes
5.4 Electronic gearbox (EG)
249