Synchronizing Spindle - Siemens SINUMERIK 840Di sl Commissioning Manual

Interface signals
Table 11-42 Spindle positioning: Interface signals
DB number Bit, byte
Axis-specific
31, ... 60.6
31, ... 60.7
31, ... 84.5
11.5.26

Synchronizing spindle

Implementation
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 following machine data defines the actual position of the spindle at the zero mark
position:
● MD34100 $MA_REFP_SET_POS (reference point value)
The zero mark offset is entered in the following machine data:
● MD34090 $MA_REFP_MOVE_DIST_CORR (reference point offset)
The following machine data specifies which signal is used for synchronization:
● MD34200 ENC_REFP_MODE (referencing mode)
SIMODRIVE 611 universal
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/ Function Manual SIMODRIVE 611 universal, Chapter: "Motion Control with
PROFIBUS DP (from SW 3.1) Zero mark substitute via PROFIBUS"
Manual
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Name
Signals from axis/spindle to PLC
Position reached with exact stop "fine"
Position reached with exact stop "coarse"
Positioning mode
1 = Encoder zero mark
2 = Bero
NC Commissioning with HMI Advanced
11.5 Axes and spindles
451