Mitsubishi Electric MELSEC-L Series, User Manual

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Chapter 14 Common Functions
[2] Precautions during control
CAUTION
In the operation by driver communication, the positioning control or JOG operation of the
master axis is not interrupted even if the servo alarm occurs in the slave axis. Be sure to stop
by user program.
(1) Servo amplifier
(a) Use the servo amplifiers compatible with the driver communication for
the axis to execute the driver communication.
(b) The combination of the master axis and slave axis is set in the servo
parameters. The setting is valid by turning ON or resetting the system's
power supply after writing the servo parameters to the Simple Motion
module.
(c) Check the operation enabled status of driver communication in "
Md.52
Communication between amplifiers axes searching flag
". The operation
cannot be changed to amplifier-less operation when connected and
not connected servo amplifier axes are mixed. Change to amplifier-
less operation when all axes are connected, or disconnect all axes of
the servo amplifier.
(d) When connecting/disconnecting at driver communication function use, it
can be executed only for the head axis (servo amplifier connected
directly to the Simple Motion module). The servo amplifier other than
the head axis can be disconnected, however it cannot be connected
again.
(e) Differences between SSCNET connection and SSCNET /H
connection in driver communication function are shown below.
SSCNET SSCNET /H
Communication
with the servo
amplifiers after
controller's power
supply ON
The servo amplifiers cannot be operated
until the connection with all system setting
axes is confirmed.
The servo amplifiers cannot be operated
until the connection with all driver
communication setting axes is confirmed.
The normal operation axis (driver
communication unset up axis) can be
connected after the network is established.
Connect/
disconnect with
servo amplifier
Only the first axis (servo amplifier
connected directly to the Simple Motion
module) can connect/disconnect.
Servo amplifiers other than the first axis
can be disconnected but cannot be
connected.
Only the first axis (servo amplifier
connected directly to the Simple Motion
module) can connect/disconnect.
Only normal axes (axes not set to driver
communication) other than the first axis
can be connected when they are
disconnected.
However, when axes set to driver
communication are disconnected, they
cannot communicate with servo amplifiers
that were connected after disconnecting.
(The servo amplifier's LED display remains
"AA".)