Siemens SINUMERIK 840Di - Synchronizing the Spindle

06.03
10.5 Axes and spindles
10-371
 Siemens AG, 2003. All rights reserved
SINUMERIK 840Di Manual (HBI) – 06.03 Edition
Axis-specific ($MA_ ...)
36000 STOP_LIMIT_COARSE Exact stop coarse
36010 STOP_LIMIT_FINE Exact stop fine
32200 POSCTRL_GAIN KV factor
36400 CONTOUR_TOL Contour monitoring
Table 10-44 Spindle positioning: Interface signals
DB number Bit, Byte Name Ref.
Axis-specific Signals from axis/spindle to PLC
31, ... 60.6
Position reached with exact stop fine
31, ... 60.7
Position reached with exact stop coarse
31, ... 84.5
Positioning mode
10.5.26 Synchronizing the spindle
To allow the spindle to be positioned from the NC, its position has to be adjusted
using the measuring system. This operation is called “synchronization”.
As a rule, synchronizing is done to the zero mark of the connected encoder or
to a BERO as zero mark substitute.
The machine data
 Set MD 34100: REFP_SET_POS (reference point value).
defines the actual position of the spindle at the zero mark position.
The machine data
 MD34090: REFP_MOVE_DIST_CORR (reference-point offset)
is used to enter the zero mark offset.
The machine data
 MD 34200 ENC_REFP_MODE (referencing mode)
specifies which signal is used for synchronization:
1 = encoder zero mark
2 = BERO.
The drive SIMODRIVE 611 universal supports the connection of a BERO as a
zero mark substitute for synchronizing the spindle.
For the exact procedure of operating a BERO on SIMODRIVE 611 universal,
see:
References: /FBU/ SIMODRIVE 611 universal, Description of Functions
Section:Motion Control with PROFIBUS DP
(from SW 3.1)
Zero mark substitute on PROFIBUS
Interface signals
SIMODRIVE 611
universal
10 NC Start-U
p
with HMI Advanced