
B–63173EN–1/01
1. AXIS CONTROL
84
The classifications of the parameters are described below. Any parameter
that is not listed in the tables for the three classifications should be
processed as a parameter of type i) and, specify identical values for the
master and slave axes.
WARNING
Note that, if different values are set for the master and slave
axes in a parameter of type i), the operations for the two
axes of tandem control will not be performed correctly.
– Care must be taken to specify the following two servo parameters,
according to the directions of rotation around the master and slave
axes.
Parameter 2022: Direction of rotation of the motor
Parameter 2087: Preload value
In parameter 2022, specify 111 for forward rotation and –111 for the
reverse rotation.
In parameter 2087, specify values having identical signs when the
motors of the master and slave axes rotate in opposite directions.
Specify values having different signs when the motors of the master
and slave axes rotate in the same direction.
– If a separate pulse coder is used, use of the separate pulse coder must
be set for the master axis. For the slave axis, use of a built–in pulse
coder must be set. Therefore, pay particular attention to setting the
following parameters.
Bit 1 of parameter 1815: Separate pulse coder
Bits 6 to 4 of parameter 1816: Detection multiplier (DMR)
Parameter 2024: Number of position detection feedback pulses
(PPLS)
Parameter 1821: Capacity of an optional reference counter
Parameter 2084: Numerator of flexible feed gear ratio
Parameter 2085: Denominator of flexible feed gear ratio
If, for example, a motor with serial pulse coder A is used with a linear
scale capable of detecting a position in 1–m units, and if a single
rotation of the motor produces a movement of 4 mm, specify the
parameters as shown below:
Master axis Slave axis
No. 1815#1 = 1 0
No. 1816 = 01110000 01110000
No. 2024 = 4000 12500
No. 1821 = 4000 4000
No. 2084 = 0 4
No. 2085 = 0 1000