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Automatic Operation (Synchronous Control)
9.1 Synchronous Control
9.1.1 Overview of Synchronous Control
What is synchronous control?
In the synchronous control, by operating a reference axis (master axis), the axes (slave axes)
interlocking (synchronizing) with the master axis are activated. The advantages of using the
synchronous control are as follows.
1. Ease of setting
A number of related axes can be operated with ease by designing the operation of the axes
based on the master axis.
2. Ensuring operational safety
If an axis comes to a stop for some reason while the positioning unit is in synchronous control,
all the relevant axes under synchronous control will come to a stop. Therefore, you can easily
increase the safety of the positioning unit.
Functions of control output
The synchronous control provides the following functions. These functions are executed in
order, and the slave axes operate according to the operation result of each function.
Function
Overview
The number of pulses multiplied by the preset electronic gear ratio is output according to the
Electronic gear
operation of the master axis.
Phase clutch
A function to turn off an electronic clutch at an arbitrarily specified phase.
OFF
Electronic
The operation of the slave axes can be separated from the operation of the master axis by
clutch
disengaging the clutch.
Advance angle
A function to electrically correct the delay in the response of a machine system connected to
correction
an electronic cam output or the delay in a PLC arithmetic processing time.
A function to output pulses according to the preset cam pattern. Calculates the operation
Electronic cam
phase of the master axis and outputs cam pulses according to the phase. The cam pattern is
set by CMI.
9-2
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