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-Up with HMI Advanced
