S1: Spindles
16.3 Reference / synchronize
Basic Functions
1286 Function Manual, 09/2011, 6FC5397-0BP40-2BA0
Special features for synchronization with BERO
The position falsification caused by the signal delay with BERO can be corrected internally in the NC by entering
a signal runtime compensation.
The signal runtime compensation is set by means of the machine data:
• MD31122 $MA_BERO_DELAY_TIME_PLUS
(BERO delay time for a positive direction of motion)
• MD31123 $MA_BERO_DELAY_TIME_MINUS
(BERO delay time for a negative direction of motion)
The effect depends on the setting in machine data:
MD34200 $MA_ENC_REFP_MODE (referencing mode)
Homing sequence
If the spindle is to be programmed in axis mode directly after control power up, it must be ensured that the axis is
homed.
When the control is switched on, the spindle can be homed (condition is one zero mark per revolution).
References:
For information about the referencing procedure, see Function Description "R1: Reference point approach [Page
1199]".
The rotary axis is referenced at the same time as the spindle is synchronized (see section "Synchronization
procedure") if the position measuring system used for the spindle is also used for the rotary axis.
MD34200 = 7 The setting MD34200 $MA_ENC_REFP_MODE=7 only executes
position synchronization at a velocity/speed which is fixed in machine
data:
MD34040 $MA_REFP_VELO_SEARCH_MARKER (reduced velocity)
The zero mark is not automatically sought, it has to be requested
explicitly with the 0-1 edge of the NC/PLC interface signal:
DB31, ... DBX16.4/5 (resynchronize spindle 1/2*)
*
)
1/2 stands for the selected measuring system.
The velocity defined in MD34040 is also effective when referencing in
JOG-REF mode and through the part program with G74.
MD34200 = 2 Setting MD34200 $MA_ENC_REFP_MODE = 2 executes position
synchronization without specifying a specific velocity/speed.
Note
Compensating the signal runtime via the NC requires the use of SIMODRIVE611D drives.
Signal propagation delays are preset on delivery so that the content generally does not have
to be changed.
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