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M800VW/M80VW Series Connection and Setup Manual
34 Synchronous Control and Multiple-axis Synchronization Control
34.1 Synchronous Control
When synchronization is set to "1" and stopper method is set to "1"
Synchronization at zero point establishment (#1493 ref_syn)
Stopper method in zero point establishing operation (#1496 push_typ)
The zero points of both master and slave axes are determined by establishing the master axis' zero point.
Slave axis moves synchronously with master axis.
At zero point establishment of stopper method, push toward the machine end stopper until both master and slave axes reach
the current limit.
Also, the droop is canceled when the current limit is reached, which enables correction of the deviation to establish the zero
point. During automatic initialization, the above operation is performed by two pushing operations.
(1) Set "#0 Absolute posn set" on the master axis to "1". If "#0 Absolute posn set" on the slave axis is set to "1", a "Setting
error" will occur.
(2) For marked point alignment method, align the master axis to the machine reference position (marked point) and set "#1
Origin-P" to "1". The droop is canceled at this time. As for stopper method, push toward the machine end stopper until
both axes reach the current limit. When the current limit is reached, the droop is canceled.
(3) As for stopper method (#2059 = 0), push master axis and slave axis against the machine end stopper, and when both of
the axes reach their current limit, the absolute position is established.
As for stopper method (#2059 = 1), push master axis and slave axis against the machine end stopper, and when both of
the axes reach their current limit, the axes reverse and the absolute position is established.
As for marked point alignment method I, move master axis in the basic Z direction with "Ret. Ref. P." in "State", and when
the axis reaches its grid point, the absolute position is established.
As for marked point alignment method II, the absolute position is established without moving to the grid point.
(4) Set "#2 Zero-P" for the master axis. When the "#2 Zero-P" for the master axis is set, the same value is set to "#2 Zero-P"
for the slave axis. The "#2 Zero-P" for the slave axis cannot be set.
Synchronous error check is not performed during absolute position initial setting.
During automatic initialization, the values set to push speed (#2055 pushf) and approach distance (#2056 aproch) for mas-
ter axis are also valid for the slave axis.
Set the same value for select zero point parameter and basic point(#2059 zerbas) for master and slave axes.
When different values are set for "#2 Zero-P" on the master and slave axes, automatic initialization cannot be started.
PLC signal (AZSn) can also be used to set "#0 Absolute posn set" to "1".
When "#0 Absolute posn set" is set to "1" in the following states, a "Setting error" will occur.
- Synchronous control method is not selected.
- An attempt was made to set "#0 Absolute posn set" for the slave axis.
- The initial setting method is marked point alignment method I and "#2050 absdir" is different for the master and slave
axes.
The following is the operation example of stopper method when the slave axis reaches the stopper first:
Canceling the droop when the current limit is reached enables correcting the deviation of the master and slave axes with the
stopper as positive.
Master axis
Slave axis
Master axis
Slave axis
Parameter
Grid point
Setting value
1
1
Machine end stopper
The current limit of both master
and slave axes is reached,
and the droop is canceled.
575
IB-1501612-C
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