Driver Communication Function - Mitsubishi Electric MELSEC iQ-FX5 User Manual

8.8

Driver Communication Function

This function uses the "Master-slave operation function" of servo amplifier. The Simple Motion module controls master axis
and the slave axis is controlled by data communication between servo amplifiers (driver communication) without Simple
Motion module.
There are restrictions in the function that can be used by the version of servo amplifier. Refer to each servo amplifier
instruction manual for details.
The following shows the number of settable axes for the master axis and slave axis.
Network Servo
amplifier
SSCNET MR-J3-_B_
MR-J3-_BS_
SSCNET/H MR-J4-_B_
MR-J4-_B_-RJ
*1 When the slave axis is not allocated for the master axis, only the master axis operates independently.
Control details
Set the master axis and slave axis in the servo parameter.
Execute each control of Simple Motion module for the master axis. (However, be sure to execute the servo ON/OFF of slave
axis and error reset at servo alarm occurrence in the slave axis.)
The servo amplifier set as master axis receives command (positioning command, speed command, torque command) from
the Simple Motion module, and send 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 with the control data transmitted from master axis by driver
communication between servo amplifiers.
SSCNET µ (/H)
Positioning command/
speed command/
torque command
Module Combination of number of settable axes
Master axis
FX5-40SSC-S 1 axis to 2 axes
FX5-80SSC-S 1 axis to 4 axes
FX5-40SSC-S 1 axis to 2 axes
FX5-80SSC-S 1 axis to 4 axes
Simple Motion
module
Master axis: Position command, speed command or torque command is received
from Simple Motion module.
Slave axis: Control data is received from Master axis by driver communication.
Master axis Slave axis 1
[Driver
communication]
Control data 1
Control data 2
Control data 3
d1
Axis 1 Axis 2
ABS/INC INC
*1
Slave axis
1 axis or more per master axis
1 axis or more per master axis
Slave axis 2
[Driver
communication]
Control data 2
Control data 3
d2 d3
Axis 3
INC
8.8 Driver Communication Function
Remark
The axes other than the master axis and
slave axis can be used as normal axis.
Slave axis 3
[Driver
communication]
Control data 3
d4
Axis 4
INC
8 COMMON FUNCTIONS
8
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