Curve tables
If a curve table is used for one of the leading axes:
Ni The denominator of the coupling factor for linear coupling must be set to 0. (De‐
nominator 0 would be illegal for linear couplings.) Denominator zero tells the control
that
Zi is the number of the curve table to use. The curve table with the specified number
must already be defined at POWER ON.
LAi The leading axis specified corresponds to the one specified for coupling via coupling
factor (linear coupling).
For more information about using curve tables and cascading electronic gears and their
synchronization, refer to:
Additional functions:
Function Manual Axes and Spindles
Response of the electronic gear for power on, RESET, operating mode change, block search
● No coupling is active after POWER ON.
● The status of active couplings is not affected by RESET or operating mode switchover.
● During block searches, commands for switching, deleting and defining the electronic gear
are not executed or collected, but skipped.
System variables of the electronic gear
By means of the electronic gear's system variables, the part program can determine the current
states of an EG axis grouping and react to them if required.
The system variables of the electronic gearbox are designated as follows:
$AA_EG_ ...
or
$VA_EG_ ...
Additional information
Function Manual System Variables
3.16.4.3 Switching-in the electronic gearbox (EGOFS, EGOFC)
There are 3 different ways to switch-out an active EG axis group.
Programming
Variant 1:
Syntax Meaning
EGOFS(following axis) The electronic gear is deactivated. The following axis is braked to a
standstill. This call triggers a preprocessing stop.
Work preparation
3.16 Axis couplings
NC programming
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0 921
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