
B-63943EN-1/02 1.AXIS CONTROL
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NOTE
When the grid position difference between the
master axis and slave axis is large, a reference
position shift can occur, depending on the timing of
the *DEC signal set to 1. In the example below,
the shift along the slave axis is so large that the
position shifted one grid point from the actual
reference position is regarded as the reference
position.
*DEC
Master axis feedrate
Master axis grid
Slave axis feedrate
Slave axis grid
ctual reference position
Stop at position shifted one
grid point
(Example) W hen the reference position on the slave axis is shifted one grid point
ctual reference position
In such a case, match the grid position according to
Subsection 1.1.4, "Automatic Setting for Grid
Position Matching."
Synchronization establishment based on absolute position detection
When an absolute-position detector is used as the position detector,
the machine positions on the master axis and slave axis are found at
power-up time for automatic establish synchronization.
- Synchronization establishment after emergency stop cancellation, etc.
Synchronization establishment is also performed when servo position
control is turned on, for example, at emergency stop cancellation,
servo alarm cancellation, or servo-off cancellation time.
However, synchronization establishment is not performed at the time
of axis removal cancellation. So, synchronization establishment
based on manual reference position return operation is required as in
the case of power-up time.