Supplementary Conditions; Electronic Gear (Eg); Product Brief; Function - Siemens SINUMERIK 840D Function Manual

M3: Coupled axes

14.4 Electronic gear (EG)

The curve tables are not lost when the control system is switched off.
These functions have no effect on cyclic machines because they are performed without
operator actions. Nor does it make sense to perform automatic (re-)positioning via the NC with
external master values.
14.3.7

Supplementary conditions

External master value axes
When using the REPOS or REPOSA parts program instructions in conjunction with external
master value axes, it should be ensured that these are released by the channel or switched to
a "neutral state" using the RELEASE instruction.
When attempting to reposition without release of the axis, the message "Wait: Feed stop active"
is displayed and the processing of the part program is not continued.
14.4 Electronic gear (EG)
14.4.1

Product brief

14.4.1.1

Function

General
The "electronic gear" function makes it possible to control the movement of a following axis,
depending on up to five master axes. The relationship between each leading axis and the
following axis is defined by the coupling factor. Following axis motion components derived from
the individual leading axis motion components have an additive effect.
The coupling can be based on:
● Actual value of the leading axis
● Setpoint of the leading axis
The following functions of a gear grouping can be programmed using part program instructions:
● Defining
● Switch on
● Switch off
● Delete
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Axes and spindles
Function Manual, 06/2019, A5E47437747B AA