258
16.7 Error Code List
This section describes the error codes (abnormal codes) of the errors that may occur in each process for performing
communications between the E71 and a connected device as well as errors caused by process requests issued from
the CPU module of the own station, the error details, and the actions to be taken. The following table lists the types of
errors that may occur.
Error type Description
Buffer memory area that
stores the error code
Errors occurring in the initial process
• Setting value error
• Initial process error
Page 259, Section 16.7 (1)
Errors occurring in the open process
• Setting value error
• Open process error
Page 259, Section 16.7 (2)
Errors occurring in communications using a
fixed buffer (sending) with the connected
device
• Specified data error
• Sending error
Page 259, Section 16.7 (3),
Page 259, Section 16.7 (4)
Errors occurring in communications using a
fixed buffer with the connected device
• Specified data error
• Communication error (excluding errors occurring in
communications using a fixed buffer (sending) with
the connected device)
Page 259, Section 16.7 (4)
Errors returned to the connected device when
communicating with it
• Errors returned in communications using a fixed
buffer (end code)
• Errors returned in communications using a random
access buffer (end code)
Errors returned in communications using the MC
protocol
End code or error code for each
command
Errors occurring while communicating with the
destination (including the causes in the
"Description" column), and whose error codes
are stored in the error log area
• Specified data error
• Errors where the source cannot be found
• Errors that have occurred in MC protocol
communications
• Errors that have occurred in communications using
a random access buffer
Page 260, Section 16.7 (5)
Errors occurring in data communications
using the predefined protocol
• Setting data error
• Receiving error
Page 261, Section 16.7 (6)
Page 263, Section 16.7 (7)
Errors (response commands) occurring in
communications with the destination using the
file transfer (FTP server) function
• Specified data error
• Communication error
MELSEC-L CPU Module
User's Manual (Built-In Ethernet
Function)
Errors occurring in communications using the
Web function
Communication error Page 264, Section 16.7 (8)
Errors occurring when an e-mail is received
• Setting data error
• Receiving error
Page 265, Section 16.7 (9) (a)
Errors occurring when an e-mail is sent
• Setting data error
• Sending error
Page 267, Section 16.7 (9) (b)
Errors occurring in communications using
data link instructions from the CPU module of
the own station
• Specified data error
• Communication error
Not stored (stored in the complete
status area of the instructions)
Errors occurring in communications using the
dedicated instructions from the CPU module
of the own station
• Specified data error
• Communication data error
Not stored (stored in the complete
status area of the instructions)
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