Siemens sinumerik 840D sl Function Manual page 283

Synchronous positions
To start up the EG axis group, an approach to defined positions for the following axis can
first be requested.
Synchronous positions are specified with:
EGONSYN (see below for details)
EGONSYNE (extended EGONSYN call).
Synchronization
If a gear is started with EGON(), EGONSYN() or EGONSYNE() see below, the actual
position of the following axis is only identical to the setpoint position defined by the rule of
motion of the gear specified by the positions of the leading axes at this time if the part
program developer makes sure that it is. The control then uses the motion of the following
axis to ensure that the setpoint and actual positions of the following axes correspond as
quickly as possible if the leading axes are moved further. This procedure is called
synchronization. After synchronization of the following axis, the term synchronous gearing is
used.
Activation response
An electronic gearbox can be activated in two different ways:
1. On the basis of the axis positions that have been reached up to now in the course of
2. The command to activate the EG axis group specifies the synchronized positions for each
3. The command to activate the EG axis group specifies the synchronized positions and
Synchronization with EGON
With EGON(), no specifications are made for the positions at which the following axis is to be
synchronized. The control system activates the EG and issues the signal "Synchronized
position reached".
Special functions: Axis Couplings and ESR (M3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
processing the command to activate the EG axis group is issued without specifying the
synchronizing positions for each individual axis.
EGON (see Chapter "Definition of an EG Axis Group")
axis. From the point in time when these positions are reached, the EG should be
synchronized.
EGON (see Chapter "Switch-on of an EG Axis Group")
approach mode for each axis. From the point in time when these positions are reached,
the EG should be synchronized.
EGONSYNE (see Chapter "Switch-on of an EG Axis Group")
Detailed description
2.4 Electronic gearbox (EG)
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