12   Troubleshooting
12 - 38
AC Servomotors/Servo Drives 1S-series with Built-in EtherCAT® Communications User’s Manual (I586)
The AL status codes notify users of errors related to EtherCAT communications.
This section gives errors that 1S-series Servo Drives notify to the host controllers with AL status codes, 
as well as their causes and remedies.
 
*1. This error can occur in the unit version 1.2 only.
*2. This error can occur in the unit version 1.3 or later.
*3. This error can occur in the unit version 1.1 or later.
*4. Refer to 10-2-4 Absolute Encoder Setup on page 10-7 for the absolute encoder setup.
*5. Refer to 13-2 Servo Drive Lifetime on page 13-3 for the lifetime of components.
12-5-2 Troubleshooting Using AL Status Codes
AL Status Code List
AL status 
code (hex)
Name Cause Measures
0011 EtherCAT 
State Change 
Error
A communications state change command was 
received for which the current communications state 
could not be changed.
Check the command specifications 
for communications state transi-
tions in the host controller and cor-
rect host controller processing.
0012 EtherCAT Ille-
gal State 
Change Error
An undefined communications state change command 
was received.
Check the command specifications 
for communications state transi-
tions in the host controller and cor-
rect host controller processing.
0013 Bootstrap 
State Transi-
tion Request 
Error
The state transition to unsupported Bootstrap was 
requested by the EtherCAT master.
Check the EtherCAT master setting 
so that the EtherCAT master does 
not request the transition to Boot-
strap.
0014 SII Verifica-
tion Error
An error occurred in SII 
data of the EtherCAT 
slave communications 
controller.
Data was incorrectly over-
written in the non-volatile 
memory of the EtherCAT 
slave communications 
controller.
If this event does not occur after 
you cycled the power supply, use 
the product continuously. It is sup-
posed that a temporary error 
occurred due to a read error.
If this event occurs again, replace 
the Servo Drive.
Failure of the EtherCAT 
slave communications 
controller or false detec-
tion
0016 Mailbox Set-
ting Error
An incorrect mailbox setting of Sync Manager was 
detected.
Check the mailbox setting, and then 
download it to the EtherCAT master 
again.
001B Sync Man-
ager WDT 
Error
PDO communications 
were interrupted for the 
allowable period or longer.
An EtherCAT communica-
tions cable is discon-
nected, loose, or broken
Connect the EtherCAT communica-
tions cable securely.
Host controller error Check the operation of the host 
controller. Take appropriate 
countermeasures if there is a prob-
lem.
001D RxPDO Set-
ting Error
An RxPDO setting error 
was detected.
The RxPDO setting of 
EtherCAT master is incor-
rect.
Correct the RxPDO setting accord-
ing to the definition of ESI of Servo 
Drive, and then download it to the 
EtherCAT master again.
If this event occurs repeatedly after 
the download to the EtherCAT mas-
ter, the Servo Drive is faulty. 
Replace the Servo Drive.
Servo Drive failure