424
41A8
H
Ethernet I/F
Error
Data length is out of permissible range. (For the
Built-in Ethernet port QCPU, the length should
be 2046 bytes if the serial number (first five
digits) is "12051" or earlier and 10238 bytes if the
serial number is "12052" or later.)
• Correct the data length.
• If the data is longer than the range, split the data
and send them.
• When the data length is 2047 to 10238 bytes,
use the Built-in Ethernet port QCPU whose
serial number (first five digits) is "12052" or later.
QnU
*2
LCPU
*2
41AB
H
Ethernet I/F
Error
Transmission failed due to timeout of
retransmission.
• Review the IP address and Ethernet address of
the target device.
• Check whether the target device has the ARP
function. If not, communicate with the one that
has the ARP function.
• Check the external device operation.
• The line may be congested with packets.
Resend data after a while.
• Check the status of devices (such as cables,
hubs, and routers) on the line to the external
devices.
• Check that the target device completes initial
processing and open processing.
• Check that a binary code is set for the
communication data code of the target device.
• Review the latency time setting if the simple
PLC communication function is used.
QnU
*2
LCPU
*2
41AC
H
Ethernet I/F
Error
• The target device cannot be found.
• The TCP connection is disconnected by the
target device.
• The Fullpassive device rejects the
communication and the TCP connection is
disconnected.
• Check the external device operation.
• Check whether the cables are securely
connected.
• Check whether the target IP address setting of
the Fullpassive device and the IP address of the
Active device are matched.
QnU
*2
LCPU
*2
41AD
H
Ethernet I/F
Error
Data cannot be send due to no connection or
disconnection of the cable.
• Check whether the cables are securely
connected.
• Check the line status by PING test from the
target device.
• Check the CPU module for error by conducting a
self-diagnostic test (resetting the CPU module).
• Send data again.
QnU
*2
LCPU
*2
41AE
H
Ethernet I/F
Error
Connection of the control port to the FTP server
failed.
• Correct "IP address" in the Built-in Ethernet port
tab.
• Correct "FTP server name" in the "FTP setting"
window.
• Check connection with the FTP server.
• Disconnect the user session on the FTP server.
QnU
*2
LCPU
*2
41AF
H
Ethernet I/F
Error
Disconnection of the control port to the FTP
server failed.
• Correct the settings in the "FTP setting" window.
• Check connection with the FTP server.
QnU
*2
LCPU
*2
41B0
H
Ethernet I/F
Error
Login to the FTP server failed.
• Correct "Login user name" and "Login
password" in the "FTP setting" window.
• Check the FTP server software settings (login
user name and login password).
• Check communication logs of the FTP server
software.
QnU
*2
LCPU
*2
41B1
H
Ethernet I/F
Error
Execution of the FTP command to the FTP
server failed.
• Correct "Directory path" and "Data transfer
mode" in the "FTP setting" window.
• Check that user has the write permission for the
destination FTP server.
• Check that the directory path set in the "FTP
setting" window exists.
• Correct the FTP server software settings.
• Check communication logs of the FTP server
software.
QnU
*2
LCPU
*2
41B2
H
Ethernet I/F
Error
Connection of the data transfer port to the FTP
server failed.
• Check connection with the FTP server.
• Correct "Data transfer mode" in the "FTP
setting" window.
• When a firewall is active or the proxy server is
on the connection path, consult the network
administrator about the settings.
QnU
*2
LCPU
*2
Error code
(Hexadecimal)
Error item Error details Corrective action
Corresponding
CPU
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