Mitsubishi Electric MELSEC iQ-FX5 User Manual page 312

• When the communication is disconnected due to a fault in the servo amplifier, it is not possible to
communicate with the axis after the faulty axis. Therefore, when connecting the SSCNET cable, connect
the master axis in the closest position to the Simple Motion module.
• This function is used for the case to operate by multiple motors in one system. Connect the master axis and
slave axis without slip.
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.
■Servo amplifier
• Use the servo amplifiers compatible with the driver communication for the axis to execute the driver communication.
• 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.
• 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.
• 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.
• Differences between SSCNET connection and SSCNET/H connection in driver communication function are shown
below.
Item
Communication with the
servo amplifiers after
controller's power supply
ON
Connect/disconnect with
servo amplifier
• If all axes set to driver communication are not detected at the start of communication with the servo amplifier, all axes
including independent axes cannot be operated. (The servo amplifier's LED display remains "Ab".) Check the operation
enabled status with "[Md.52] Communication between amplifiers axes searching flag". When all independent axes and
axes set to driver communication are connected, "0: Search end" is set in "[Md.52] Communication between amplifiers
axes searching flag".
Monitor item
[Md.52] Communication between amplifiers
axes searching flag
8 COMMON FUNCTIONS
310
8.8 Driver Communication Function
SSCNET
The servo amplifiers cannot be operated until the
connection with all system setting axes is confirmed.
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.
Monitor value

SSCNET/H
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.
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".)
Storage details
The detection status of axis that set communication
between amplifiers is stored.
0: Search end
1: Searching
Buffer memory address
4234