A - 109
 Appendices
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
A-4  Sysmac Error Status Codes
A
A-4-1  Error List
84B70000 SII Verification Error An error occurred in SII data 
of the EtherCAT slave com-
munications controller.
• Data was incorrectly over-
written in the non-volatile 
memory of the EtherCAT 
slave communications con-
troller
• Failure of the EtherCAT 
slave communications con-
troller or false detection
√ P. A-16 1
84B90000 Synchronization 
Interruption Error
Synchronization interrup-
tion did not occur within the 
specified period.
• Incorrect EtherCAT syn-
chronization setting of the 
host controller
• Failure of the EtherCAT 
slave communications con-
troller or false detection
√ P. A-16 2
84BA0000 Bootstrap State 
Transition Request 
Error
The state transition to 
unsupported Bootstrap was 
requested.
• The EtherCAT master 
requested the transition of 
unsupported Bootstrap
√ P. A-16 2
88100000 Communications 
Synchronization 
Error
Communications were not 
established consecutively 
because the synchroniza-
tion with the EtherCAT Mas-
ter could not be achieved.
• The power supply to the 
host controller was inter-
rupted during PDO commu-
nications.
• An EtherCAT communica-
tions cable is disconnected, 
broken, short-circuited, or 
has a contact failure in a 
daisy chain configuration.
• An EtherCAT communica-
tions cable is broken, 
short-circuited, or has a 
contact failure in a ring 
topology configuration.
•Noise
• Failure of the EtherCAT 
physical layer of a Servo 
Drive
√ P. A-16 3
88120000 Safety Communica-
tions Timeout
A communications timeout 
occurred in safety process 
data communications with 
the Safety CPU Unit.
• A setting is not correct. The 
setting of the safety task 
period of the Safety CPU 
Unit is too short
• There is excessive noise
• The Safety CPU Unit or 
safety slave entered a sta-
tus where it could not con-
tinue safety process data 
communications
√ P. A-16 4
98200000 Absolute Value 
Cleared
The multi-rotation counter of 
the absolute encoder was 
cleared.
• The multi-rotation counter of 
the absolute encoder was 
cleared
√ P. A-16 4
081C0000 Capacitor Lifetime 
Warning
The capacitor built into the 
Servo Drive reached the 
service life.
• The operating time of the 
capacitor in the Servo Drive 
exceeded the service life
√ P.  A -16 5
Event code 
(hex)
Event name Description Assumed cause
Level
Refer-
ence
Min
Obs
Info