Siemens SINUMERIK 840Di - Parameterization of Absolute Measuring Systems

06.03
10.5 Axes and spindles
10-320
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
10.5.6 Parameterization of absolute measuring systems
SINUMERIK 840Di currently supports the following absolute encoders:
 EQN 1325
Manufacturer of the absolute encoder EQN 1325 is Heidenhain. It is also pos-
sible to use compatible encoders of other manufacturers.
The absolute encoder EQN 1325 has the following properties:
 Voltage signals sin/cos 1Vpp
 EnDat interface
 2,048 pulses/revolution
 4,096 revolutions.
An absolute encoder can currently exclusively be used as a motor encoder (in-
direct measuring system).
M
IS_ROT_AX=0
ÍÍÍÍÍÍ
ÍÍÍÍÍÍ
Table
F
DRIVE_AX_RATIO_NUMERA
DRIVE_AX_RATIO_DENOM
LEADSCREW_PITCH
n
Encoder
Meas.
gearbox
n
Motor
Load
gearbox
n
Spindle
Ball screw
DRIVE_ENC_RATIO_NUMERA
DRIVE_ENC_RATIO_DENOM
Encoder revs
Motor revs
Spindle revs
Motor revs
=
ENC_IS_LINEAR=0
ENC_IS_DIRECT=0
ENC_TYPE=4
ENC_ABS_TURNS_MODULO=4096
ENC_REFP_MODE=2
Fig. 10-12 Linear axis with motor-mounted rotary absolute encoder
Encoder types
EQN 1325
Measuring
systems
Linear axis with
motor-mounted
rotary absolute
encoder
10 NC Start-U
p
with HMI Advanced