Siemens SINUMERIK 840D sl Function Manual page 267

Table 5-1 System variables, R means: Read access possible
name Type
$P_EG_BC[a] STRING
$AA_EG_ INT
NUM_LA[a]
$AA_EG_ AXIS
AX[n,a]
$AA_EG_ BOOL
ACTIVE[a,b]
(from SW 5.2)
$VA_EG_ REAL
SYNCDIFF[a]
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Preprocessing
Access
stop
Parts Parts
Sync
progra progra
act.
m m
R R
R R
R R
R R
R R R
Meaning, value
Sync
act.
Block change criterion for
EG activation calls: EGON,
EGONSYN:
"NOC": immediately
"FINE": Synchronoous
traverse fine
"COARSE": Synchronous
traverse coarse
"IPOSTOP": Setpoint-
based synchronism
Number of leading axes
defined with EGDEF. 0 if
no axis has been defined
as a following axis with
EGDEF.
Axis identifier of leading
axis whose index n has
been specified.
Determine power-on state
of a leading axis:
0: Switched off
1: activated
Actual value of
synchronism difference. A
comparison of machine
data MD37200
$MA_COUPLE_POS_TOL
_COARSE and MD37210
$MA_COUPLE_POS_TOL
_FINE produces interface
signals.
M3: Coupled axes
5.4 Electronic gearbox (EG)
Cond. Index
Axis identifier
a: Following axis
Axis identifier
a: Following axis
Axis identifier
n: Index of leading axis in
the EG coupling 0 ... 4
a: Following axis
Axis identifier
a: Following axis
b: Leading axis
Axis identifier
a: Following axis
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