Control Details - Mitsubishi Electric Q Series Programming Manual

4 AUXILIARY AND APPLIED FUNCTIONS

4.16.1 Control details

Motion CPU
SSCNET (/H)
Positioning command/
speed command/
torque command
Set the master axis and slave axis in the servo parameter.
Execute each control of Motion CPU in the master axis. (However, be sure to execute
the servo ON/OFF of slave axis, and error reset at servo error occurrence in the slave
axis.) The servo amplifier set as master axis receives command (positioning command,
speed command, torque command) from the Motion CPU, and sends the control data
to the servo amplifier set as slave axis by driver communication between servo
amplifiers.
The servo amplifier set as the slave axis is controlled by the control data transmitted
from the master axis by driver communication between servo amplifiers.
Servo amplifier
MR-J3- B/MR-J4- B
Master axis
[Driver
communication]
Control data 1
Control data 2
Control data 3
d1
Axis 1
ABS/INC
POINT
When a servo amplifier fails due to a SSCNET (/H) communication failure,
communication with the axes after the failed axis cannot be executed. For this
reason, be sure to connect the master axis to the position closest to the Motion
CPU.
Master axis: Position command, speed command or torque command is received
from Motion CPU.
Slave axis : Control data is received from Master axis by driver communication.
Slave axis 1
[Driver
communication]
Control data 2
Control data 3
d2
Axis 2
INC
4 - 95
Slave axis 2
[Driver
communication]
Control data 3
d3
Axis 3 Axis 4
INC INC
Slave axis 3
d4