Mitsubishi MELSEC LJ71C24, Руководство пользователя

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15 TROUBLESHOOTING
15.2.2 Error code list
The following shows the error codes, error contents, and corrective actions for errors
that are generated during data communication.
(" " in the table is the error code when the target CPU module is not a Q/L/QnACPU.)
The signal name in the following table indicates the CH side LED on status or
communication error status that is stored into buffer memory address 201
H
/202
H
when
an error occurs.
The CH side LED on status and communication error status can be confirmed by
System monitor and Intelligent function module monitor function of GX Works2. (Refer
to Section 15.1.1.)
For errors without a corresponding signal name entered to errors generated with the
MC protocol communication, "NAK" comes on.
Protocol
Error code
(Hexa-
decimal)
Error
Description
Signal
name
Corrective action
MC
Non-
proce-
dural
Bi-
direc-
tional
Pre-
defined
4000
H
to
4FFF
H
Error detected by
CPU module
⎯ ⎯
•
Take corrective actions, referring to the
troubleshooting section of the User's
Manual (Hardware Design,
Maintenance and Inspection) for the
CPU module used.
•
If this error occurs during CPRTCL
instruction execution, identify the CPU
module error, and correct the CPU
device No. that is specified in the Non-
conversion or Conversion variable data
storage area.
7101
H
7102
H
System error
•
The OS of the C24 detected some
error.
⎯
( 1)
7103
H
Programmable
controller access
error
•
Cannot communicate with the CPU
module.
C/N
•
Increase the Response monitoring time
(timer 1).
•
Perform a Self-loopback test, and check
if the data communication with the CPU
module can be performed.
7104
H
to
7116
H
System error
•
The OS of the C24 detected some
error.
⎯
( 1)
7140
H
Request data error
•
The request exceeded the limit of
processing points that are
predetermined for each command and
allowed for one transmission.
•
A word device was designated in a bit
units command.
•
The requested range exceeded the last
device number.
CPU module's last device No.
Head device No. + Number of
device points (in message sent
from external device)
PRO.
•
Check and correct the external device
transmit message and restart data
communications.
•
If no error is found in the device range,
clear the programmable controller CPU
information and retry. (Refer to Section
15.5.)
7141
H
System error
•
The OS of the C24 detected some
error.
⎯
( 1)
7142
H
Device name error
•
A device that cannot be designated by
the given command was designated.
PRO.
•
Check and correct the external device
transmit message and restart data
communications.
•
If no error is found in the device name,
clear the programmable controller CPU
information and retry. (Refer to Section
15.5.)
7143
H
Device No. error
•
The head device No. is out of range. PRO.
•
Check and correct the external device
transmit message and restart data
communications.