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Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual Page 327

Ethernet.
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Error
Error details and causes
code
C86AH
In MODBUS/TCP communications, the content of the
data part of the received request message is incorrect.
The size of the received request message is smaller than
the minimum size required for the function code, or larger
than the maximum size required for the function code.
C86BH
In MODBUS/TCP communications, the content of the
MBAP header of the received request message is
incorrect.
C86CH
The number of received request messages exceeded the
number that can be received simultaneously.
CEE0H
The devices supporting iQSS which were detected by the
other peripheral device, or other iQSS functions were
executed while the automatic detection of connected
devices is in process.
CEE1H
Incorrect frame is received.
CEE2H
Incorrect frame is received.
CF10H
Incorrect frame is received.
CF20H
• The setting value of the communication setting is out of
range.
• The items of communication setting which cannot be
set on the target device are set.
• The required setting items have not been set to the
target device.
CF30H
The parameter which is not supported by the target
device was specified.
CF31H
Incorrect frame is received.
CF70H
An error occurred on the Ethernet communication path.
CF71H
A timeout error has occurred.
Action
Check the data part of the request message on the
master side that issued the message.
Check the content of the request message on the master
side that issued it.
Wait for a while and retry sending on the master side that
issued it. (The number of request messages that can be
received simultaneously is 64 for each of PORT1 and
PORT2.)
Execute the other function after the automatic detection
of connected devices is completed.
• Check the operating status and connection status of
the target device.
• Check the connection of an Ethernet cable and a hub.
• Check the line status of Ethernet.
• Reset the CPU module and target device, and retry the
operation.
If the above actions do not solve the problem, contact the
manufacturer of the target device.
• Check the operating status and connection status of
the target device.
• Check the connection of an Ethernet cable and a hub.
• Check the line status of Ethernet.
• Reset the CPU module and target device, and retry the
operation.
If the above actions do not solve the problem, contact the
manufacturer of the target device.
• Check the operating status and connection status of
the target device.
• Check the connection of an Ethernet cable and a hub.
• Check the line status of Ethernet.
• Reset the CPU module and target device, and retry the
operation.
If the above actions do not solve the problem, contact the
manufacturer of the target device.
Correct the setting details, and retry the operation.
Check the version of the target device.
• Check the operating status and connection status of
the target device.
• Check the connection of an Ethernet cable and a hub.
• Check the line status of Ethernet.
• Reset the CPU module and target device, and retry the
operation.
If the above actions do not solve the problem, contact the
manufacturer of the target device.
• Check the operation of the target device.
• Check if the connection cable is disconnected.
• Check the operation of the target device. Since there
may be congestion of packets on the line, perform the
operation after a while.
• Correct the setting details of when the iQSS function is
executed, and retry the operation.
• Check the connection of an Ethernet cable and a hub.
Detailed information
3 TROUBLESHOOTING
325
3.5 List of Error Codes
3

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