Error Code Tables; Error Code Table - Mitsubishi QJ71C24N User Manual

11 TROUBLESHOOTING

11.2 Error Code Tables

11.2.1 Error code table

Error code
Error
(Hexa-
decimal)
3E8
H
⎯
to
3FFF
H
4000
H
⎯
to
4FFF
H
7101
H
System error
7102
H
Programmable
7103 controller access
H
error
7104
H
to System error
7116
H
7140 Request data error
H
7141 System error
H
7142 Device name error
H
11 - 18
The following shows the error codes, error contents, and corrective action for errors
that are generated during communication between the Q series C24 and an external
device.
The signal name in the following table indicates the CH
communication error status that is stored into buffer memory address 201
an error occurs.
The CH side LED on status and communication error status can be confirmed by GX
Developer's System monitor or GX Configurator-SC. (Refer to Section 11.1.1.)
For errors without a corresponding signal name entered to errors generated with the
MC protocol communication, "NAK" comes on.
The following shows the error codes, error details, and corrective actions for the errors
that may occur during communication using MC protocol (excluding A compatible 1C
frame), non procedure protocol, bidirectional protocol, or pre-defined protocol.
(" " in the table is the error code when the target CPU is not a Q/QnACPU.)
Description
(Error detected by the CPU)
(Error detected by the CPU)
• The OS of the Q series C24 detected
some error.
• Cannot communicate with the Q series
C24 CPU.
• The OS of the Q series C24 detected
some error.
• Number of request points exceeds the
range for the command.
• A word device was designated in a bit
units command.
• The last device No. exceeds the range.
Given device last No. Designated head
device No. + Designated number of points
• The OS of the Q series C24 detected
some error.
• A device that cannot be designated by
the given command was designated.
Signal
Corrective action
name
• Refer to Appendix of the QCPU User's
Manual (Hardware Design,
⎯
Maintenance and Inspection) and take
corrective action.
• Refer to Appendix of the QCPU User's
Manual (Hardware Design,
Maintenance and Inspection) and take
corrective action.
• If this error occurs during CPRTCL
⎯
instruction execution, identify the CPU
error, and correct the CPU device No.
that is specified in the Non-conversion
or Conversion variable data storage
area.
⎯
( 1)
• Make the watchdog timer (timer 1) time
longer.
C/N
• Perform a self-loopback test, and check
if the CPU can communicate.
⎯
( 1)
• Check and correct the external device
transmit message and restart data
communications.
• If no error is found in the device range,
PRO
clear the programmable controller CPU
information and retry. (Refer to Section
11.1.7.)
⎯
( 1)
• Check and correct the external device
transmit message and restart data
communications.
• If no error is found in the device name,
PRO
clear the programmable controller CPU
information and retry. (Refer to Section
11.1.7.)
MELSEC-Q
side LED on status or
/202
H H
Protocol
Non
Bidire-
MC Proce-
ctional
dure
11 - 18
when
Pre-
defined