Mitsubishi Electric MELSERVO-J4 series Instruction Manual page 488

17. APPLICATION OF FUNCTIONS
Eight master axes can be set at most per one system of SSCNET III/H. The maximum number of slave
axes to each master axis is not limited. However, the total number of the master and slave axes should
be the maximum number of the servo amplifiers at most. In addition, when an SSCNET III/H
communication brake occurs due to malfunction of a servo amplifier, the malfunctioning axis and later
axis cannot be communicated. Therefore, the first amplifier from the controller via SSCNET III/H cable
should be master axis.
MR-J4-_B_(-RJ)
Controller
Position
command
These are for the
same machine.
(3) Parameter setting for the master-slave operation function
To use the master-slave operation function, the following parameter settings are necessary. For details of
the parameters, refer to section 5.2.1 and 5.2.4.
No.
Forced stop deceleration
PA04
function selection
Rotation direction
PA14 selection/travel direction
selection
PD15 (Note) Driver communication setting
Driver communication setting -
PD16 (Note) Master - Transmit data
selection 1
Driver communication setting -
PD17 (Note) Master - Transmit data
selection 2
Master axis No. selection 1 for
PD20 (Note)
slave
Master-slave operation -
PD30 Torque command coefficient on
slave
Master-slave operation - Speed
PD31
limit coefficient on slave
Master-slave operation - Speed
PD32
limit adjusted value on slave
Note. Always set this with servo parameters of the controller. Incorrect setting will prevent a normal SSCNET III/H communication.
Master axis
MR-J4-_B_(-RJ)
[Driver communication]
Torque command
Speed limit command
CN2
Name Initial value
2000
0
0000
0000
0000
0
0
0
0
Slave axis 1
MR-J4-_B_(-RJ)
[Driver communication]
Torque command
Speed limit command
CN2
Setting value
Master axis Slave axis
0 _ _ _
Refer to section 5.2.1.
0001
0038
003A
Master axis
0
0
Refer to
section 5.2.4.
0
0
17 - 13
Slave axis 2
MR-J4-_B_(-RJ)
[Driver communication]
Torque command
Speed limit command
CN2
Setting
Used to disable the deceleration to
0 _ _ _
a stop function.
Used to set a torque generation
direction.
0010 Master and slave setting
Communication data from master to
0000 slave
Torque command
Speed limit value
0000
Master axis No. of transmitting data
No.
Ratio of torque command of slave
axis, ratio of speed limit value, and
setting of speed limit minimum value
Slave axis 3
CN2