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M800VW/M80VW Series Connection and Setup Manual
34 Synchronous Control and Multiple-axis Synchronization Control
34.1 Synchronous Control
(1) From the PLC, turn ON the master and slave axis bits of the "synchronous control operation method" signal to select syn-
chronous operation in "synchronous control mode".
(2) Carry out zero point return manually.
(3) When the master axis reaches a dog, both axes decelerate at the same time.
(4) After deceleration, both axes start traveling at a creep speed.
(5) The master axis travels until reaching the second grid after dog OFF, and stops on the grid. (If the deceleration after dog
OFF goes over the 1st grid, the master axis will stop on the 3rd grid) If the reference position adjustment value is "0", the
slave axis will move in synchronization with the master axis. If the value is not "0", the slave axis will be compensated by
the reference position adjustment value to move asynchronously to the master axis.
(6) The master axis travels by the reference position shift distance (#2027 G28sft), and then stops. The slave axis travels in
synchronization with the master axis.
(7) Switch to "Correction mode" and feed the slave axis by handle feed to the position of the desired zero point.
(8) At this point, the "reference position adjustment completion" signal is input from the PLC.
(9) When the "reference position adjustment completion" signal is input, the NC automatically sets the reference position
adjustment value to "#2036 slv_adjust" (reference position adjustment value). Reference position adjustment value is a
distance between the position calculated by subtracting the reference position shift distance from the current position and
a near grid. Select a grid with which this vector becomes positive as the near grid. "#", which stands for the zero point
return completion, is not displayed. The alarm (Z81 0001) is not cleared.
(10) Enter back into synchronous control mode synchronous operation.
(11) Carry out the normal manual zero point return. If necessary, adjust the position by the reference position shift distancet
(#2027 G28sft). Set the reference position shift distance to the master axis' parameter. The slave axis value is ignored.
[Adjustment sequence]
Master axis start position
(a)
(b)
Master axis
Slave axis
Slave axis start position
Grid
(c)
(d)
Near-point dog
Reference position adjustment value
G28sft
(e)
(f)
completion signal ON
(f)
(g)
G28sft
Basic machine coordinate system zero point
569
zero point return
IB-1501612-C
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