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11-24
11-4 Troubleshooting
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
11
Error and Maintenance
83
Communications error
Occurs during operation.
• The data to be
received during the
MECHATROLINK-II
communication cycles
was not received. The
failures continued in
series more often than
the value set on the
Communications
Control Setting
(Pn800).
• Wire the
MECHATROLINK-II
communications cable
correctly.
• Connect the
Terminating Resistor
correctly.
• Confirm that the
MECHATROLINK-II
communications cable
does not have
excessive noise.
Mount a ferrite core to
the communications
cable.
• Increase the detection
setting on the Pn800.
84
Transmission cycle
error
Occurs when the power is
turned on.
• An error occurred
when the
synchronization is
established.
• Turn off the power
once, and turn it on
again.
• Replace the
Servomotor.
• Replace the Servo
Drive with a new one.
Occurs when the
operation starts up.
• In the asynchronous
MECHATROLINK-II
communications state,
a communication error
occurs while
SYNC_SET command
is executed.
• Wire the
MECHATROLINK-II
communications cable
correctly.
• Connect the
Terminating Resistor
correctly.
• Confirm the
MECHATROLINK-II
communications cable
do not have excessive
noise. Mount a ferrite
core to the
communications cable.
• While the
MECHATROLINK-II
communication
connection is being
established, the
synchronization
frames (SYNC) were
not received according
to transmission cycle.
86
Watchdog data error
Occurs during operation.
• An error occurred in
the synchronization
data of
MECHATROLINK-II
communications.
• Confirm the updating
process of the
watchdog data by the
host controller.
87
Forced alarm input error Occurs during operation.
• An Emergency Stop
(STOP) signal was
entered.
• Turn OFF the
Emergency Stop
(STOP) signal.
Alarm
number
Error conditions
Status when error
occurs
Cause
Measures
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