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9-4
9-2 Preparing for Operation
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
9
Operation
MECHATROLINK-II Communications Status LED Indicator
The table below shows the LED indication status and the corresponding conditions of the
communications.
Note. If any of communication related error occurs while an error that is not related to MECHATROLINK-
II communications happens, the MECHATROLINK-II Communications Status LED Indicator
follows the corresponding communications status as shown above.
Turning on the Power Supply
Turn on the control circuit power after you conduct the pre-power-on checking.
You may turn on the main circuit power, but it is not a requisite.
It takes approx 2 seconds for the alarm output (/ALM) to turn on since the power-on. Do not
attempt to detect an alarm, during this period, by the Host Controller. This precaution relates to
the case when the power is turned on while the Host Controller is connected.
LED status
Communications status
Unlit
No communication is established.
Green Flash
Asynchronous communications is established.
Green Light
Synchronous communications is established.
Red Flash
A clearable error occurred in MECHATROLINK-II communications.
• Communications error (Alarm No.83.0)
• Transmission cycle error (Alarm No.84.0)
• SSYNC_SET error (Alarm No.84.4)
• Watchdog data error (Alarm No.86.0)
• Transmission cycle setting error (Alarm No.90.0)
• CONNECT error (Alarm No.90.1)
• SYNC command error (Alarm No.91.0)
Red Light
A non-clearable error occurred in MECHATROLINK-II communications.
• Node address setting error (Alarm No.82.0)
• SYNC process error (Alarm No.84.3)