Mitsubishi Electric MELSEC iQ-R Series - Page 636

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37 EVENT LIST
37.2 Event List
00800 System Warning Link-down ■CPU module
The CPU module has entered into
the link-down state as a result of an
operation such as disconnecting a
network cable between the CPU
module and an external device.
■Redundant function module
The redundant function module has
entered into the communication
disable state as a result of any of the
following:
• Any tracking cable was
disconnected.
• The other system was powered off.
• An error occurred in the cable,
connector, or module.
Operation
source
information
Communication
speed and
communication
mode

00904 Socket
communication send
error
Sending a message over socket
communication failed.

00906 Alive check error The alive status of an external device
could not be checked within the
period specified by the response
monitoring timer.
00907 Divided message
receive timeout error
• All the data could not be received
within the period specified by the
response monitoring timer.
• Data of the total data length could
not be received.
• The remaining part of the message
divided into the TCP/IP level could
not be received within the period
specified by the response
monitoring timer.
00908 IP composition
timeout error
An IP composition timeout error
occurred. (The specified period of
time expired without receiving all of
the divided data.)
00909 TCP-specified port
number error
A port number being used for opened
connection was set (for TCP/IP).
0090A UDP-specified port
number error
A port number being used for opened
connection was set (for UDP/IP).
Event
code
Event
type
Event
category
Detected event Description Detailed information
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