Siemens sinumerik 840D sl Function Manual page 298

Detailed description
2.4 Electronic gearbox (EG)
2.4.7 Response to 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.
More detailed information on special states can be found under "Performance Overview of
the Electronic Gearbox".
Block search for certain simulations
Certain active axis couplings can be simulated in the block search. As this does not apply to
all possible coupling types, it is also possible to skip areas in which block searches cannot
be made with an "automatic interrupt pointer". The electronic gear can be simulated for all
block search types under the following conditions:
• Simulation always takes place with setpoint coupling.
• No cross-channel leading axes may be disabled.
• Axis movements for which all real positions are known to the NC.
References: /K1/, BAG, Channel, Program Operation, Reset Response
2.4.8 System variables for electronic gearbox
Application
The following system variables can be used in the parts program to scan the current states
of an EG axis group and to initiate appropriate reactions if necessary:
Table 2-1 System variables, R means: Read access possible
name Type
$AA_EG_ INT
TYPE[a,b]
(ab SW 5.2)
$AA_EG_ REAL
NUMERA[a,b]
(from SW 5.2)
------
(SW 6 and
higher)
78
Access Preprocessing
stop
Parts Sync Parts
program act. program
R R
R R
Meaning, value
Sync
act.
Type of coupling:
0: actual value
1: Setpoint value coupling
Numerator of coupl. factor KF
KF = numerator/denominator
preset: 0
----
Number of curve table when
$AA_EG_DENOM[a,b] is 0.
Special functions: Axis Couplings and ESR (M3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Cond. Index
Axis identifier
a: Following axis
b: Leading axis
Axis identifier
a: Following axis
b: Leading axis