Alarm List
Alarm Number (1000 to 1999)
Alarm List-294
240 An error occurred in the start 
process of the Ethernet 
function Telnet (for onboard).
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).
YCP21 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. 
241 An error occurred in the start 
process of the Ethernet 
function Telnet (for expand).
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).
YCP21 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. 
1222 IP ADDRESS SET 
FAIL(DHCP)
IP address could not be 
obtained at DHCP.
Setting error (1)Check the following settings.
∙ The DHCP server operation
∙ The network status
YCP21 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).
1240 SAFETY FIELDBUS 
SETTING ERROR
1 Machine Safety doesn't 
correctly read the value of the 
processing start wait time.
Data error (1)Turn the power OFF then back ON.
(2)If the alarm occurs again, save the following parameter file in online 
mode. Initialize the following parameter file in maintenance mode, and 
then load the parameter file saved in the external memory device.
∙ SD.PRM
Alarm
Number
Alarm Name Sub
Code
Meaning Cause Remedy