Alarm List
Alarm Number (1000 to 1999)
Alarm List-304
1316 COMMUNICATION 
WDT 
ERROR(SERVO)
Connection failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, check the connection and insertion of the 
following cables and connectors.
∙ EAXA21-CN515
∙ YIF01-CN113
EAXA21 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the EAXA21 board. Save the 
CMOS.BIN before replace the board to be safe.
YIF01 board failure (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the YCP21 board. Save the 
CMOS.BIN before replace the board to be safe.  Replace the YCP21 
board, and then remove the CF from the failure YCP21 board to insert 
it into the new YCP21 board. 
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
1317 COMMAND 
TIMEOUT(SERVO)
Sub Code: Signifies the axis 
in which the alarm occurred
Software operation error 
occurred
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, save the CMOS.BIN in maintenance 
mode, and then contact your Yaskawa representative about 
occurrence status (operating procedure).
1318 CANNOT EXECUTE 
COMMAND(SERVO)
Sub Code: Signifies the axis 
in which the alarm occurred
Software operation error 
occurred
(1)Turn the power OFF then back ON.
(2)If the alarm occurs again, save the CMOS.BIN in maintenance 
mode, and then contact your Yaskawa representative about 
occurrence status (operating procedure).
1319 SERIAL ENCODER 
MODULE ERROR
Module failure (encoder) (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the encoder.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
1320 SERIAL ENCODER 
SENSOR ERROR
Module failure (encoder) (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, replace the encoder.
other If the alarm occurs again, save the CMOS.BIN in maintenance mode, 
and then contact your Yaskawa representative about occurrence 
status (operating procedure).
Alarm
Number
Alarm Name Sub
Code
Meaning Cause Remedy