Siemens SINUMERIK 840D Function Manual page 488

M3: Coupled axes
14.4 Electronic gear (EG)
Z, <Syn-
PosC99_Z>,10, 1)
; 2nd Gear stage
N900 EGDEF(C, C99, 1,
Z, 1)
N910
N900
N910
N920 EGONSYN(C, "NOC",
<SynPosC>, C99,
<SynPosC_C99>, 1,
1, &
Z, <SynPosC_Z>, 4,
0)
N999 M30
Machine data
Only one section is specified, which extends beyond the necessary geometry/channel
configuration and machine axis parameters.
$MN_NUM_EG = 5
$MN_MM_NUM_CURVE_TABS = 5
$MN_MM_NUM_CURVE_SEGMENTS = 50
$MN_MM_NUM_CURVE_POLYNOMS = 100
Setting data
If the scaling described in Section "Electronic gear (EG) (Page 464)" is used, the function value
from the following machine data changes according to the displacement:
MD43108 $SD_LEAD_SCALE_OUT_POS[4] = 1.2 ; scaling for table C4
System variables
In accordance with the above definitions, the following values are entered in the associated
system variables by the control.
Further information
List Manual System Variables
The system variables listed below are only used for explanatory purposes!
; ************** Gear X (G1)
$AA_EG_TYPE[X, Z] = 1
$AA_EG_NUMERA[X, Z] = 1
488
; Switch-on of leading axis Z
; "&" character means: command continued in next line, no LF nor comment per-
missible in program
; declaration of following C99 of step 1 as leading axis of step 2,
; Setpoint value coupling
; Declaration of path via C4, setpoint coupling
; Switch-on of software axis C99
; and of leading axis Z via C4
; Maximum number of gearboxes
; Maximum number of curve tables
;Max. Number of curve segments
;Max. Number of curve polynomials
; Setpoint value coupling
; curve table No. = 1
Function Manual, 06/2019, A5E47437747B AA
Axes and spindles