Bosch PIN8 N1 Guía para resolver problemas Pagina 395

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MPH-02, MPB-02, MPD-02 Operating Modes 7-89
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Relative/Absolute Synchronization
In the synchronous position control modes it is possible to select either
relative or absolute synchronization:
relative synchronization (P-0-0155, bit 1 = 1)
There is no fixed position reference between master axis and slave
axis
absolute synchronization (P-0-0155, bit 1 = 0)
There is a fixed position reference between master axis position
and position command value that results from the master axis position
and the parameterized additive position command value.
The figure below illustrates the relative synchronization to a virtual master
axis, the master axis being in standstill when the operating mode is
activated.
DK000041v01_en.fh7
t
t
0
0
t
master axis
velocity
0
master axis
position
operating mode
activated
1
t
0
synchronization
completed
(P-0-0152, bit 0)
1
Fig. 7-68: Example: relative synchronization out of standstill
When the operating mode is activated, the synchronous velocity = 0.
Upon activation of the operating mode the bits for "synchronization
completed" (P-0-0152, bit 0 = 1) and "slave axis has been
synchronized" (P-0-0089, bit 8 = 1) are output.
When the machine starts, the axis, based on its current position,
follows the master axis position with relatively synchronous position.
Relative Synchronization in
Standstill
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