8. TROUBLESHOOTING
8 - 28
Alarm No. 8E
Name: USB communication error
Stop method: All axes stop
Alarm description
USB communication error occurs between the servo amplifier and a communication device (PC, etc.)
Display Name
Cause
Checkpoint
Finding
Action
8E.4 USB
communication
command error
(1) Command not in the
specification is
transmitted.
Check the command
code at transmission.
Command not in the
specification is
transmitted.
Modify the send
command.
Only commands in the
specification is
transmitted.
Check (2).
(2)
Communication
protocol
is faulty.
Check if transmission
data conforms the
communication protocol.
Does not conform.
Modify transmission
data according to the
communication
protocol.
Conforms.
Check
(3).
(3) Setting of communication
device (personal
computer, etc.) is
improper.
Check the
communication setting of
the communication
device.
Incorrect setting
found.
Review the setting.
8E.5 USB
communication
data No. error
(1) Data No. not in the
specification is
transmitted.
Check the data No. at
transmission.
Data No. not in the
specification is
transmitted.
Modify the send
command.
Only data No. in the
specification is
transmitted.
Check (2).
(2)
Communication
protocol
is faulty.
Check that transmission
data conforms the
communication protocol.
Does not conform.
Modify transmission
data according to the
communication
protocol.
Conforms.
Check
(3).
(3) Setting of communication
device (personal
computer, etc.) is
improper.
Check the
communication setting of
the communication
device.
Incorrect setting
found.
Review the setting.
Summary of Contents for MELSERVO-J3W Series
Page 17: ...8 MEMO ...
Page 27: ...1 FUNCTIONS AND CONFIGURATION 1 10 MEMO ...
Page 87: ...4 STARTUP 4 14 MEMO ...
Page 117: ...5 PARAMETERS 5 30 MEMO ...
Page 129: ...6 GENERAL GAIN ADJUSTMENT 6 12 MEMO ...
Page 185: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 241: ...11 OPTIONS AND AUXILIARY EQUIPMENT 11 56 MEMO ...
Page 274: ...13 USING A LINEAR SERVO MOTOR 13 25 1 2 3 4 ...