12 Troubleshooting and Maintenance
12-28
G5-series AC Servomotors and Servo Drives User’s Manual (with Built-in EtherCAT Communications)
Error number
Name
Error
timing
Cause Measures
Main Sub
90 0 Communica
tions setting
error
Occurs
when the
power
supply is
turned ON.
• An out-of-range value was set from
the host controller.
• A command that changes the
communications state to an
unsupported state was received.
• Make EtherCAT communications
settings such as the synchronous
cycle (SYNC0 cycle) correctly.
• Check the specifications of the
communications state change
command for the host controller.
91 1 Command
error
Occurs
during
operation.
• When bit 9 (Remote) of the
Statusword (6041 hex) was set to 1
(remote), and the Servo Drive was
in operation enabled state (Servo
ON), a command that changes the
communications state from
Operational to another state (Init,
Pre-Operational, Safe-Operational)
was received.
• An unsupported number was set in
Modes of operation (6060 hex).
• CSV or CST was set in Modes of
operation (6060 hex) during fully-
closed control.
• The Modes of operation (6060 hex)
was switched in less than 2 ms.
• The homing operation was started
when the Homing method
(6098 hex) was set to a value other
than 8, 12, 19, 20, 33, 34, or 35.
• The data setting warning (Warning
No. B0 hex) occurred in a row,
exceeding the Data Setting
Warning Detection Setting
(3781 hex) value.
Check the command specifications of
the host controller.
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