Mitsubishi MELSEC QJ71C24, User Manual

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MELSEC-Q
11 TROUBLESHOOTING
Protocol
Error code
(Hexa-
decimal)
Error
Description
Signal
name
Corrective action
MC
Non
Proce-
dure
Bidire-
ctional Pre-
defined
7FF0
H
Dedicated
instructions
simultaneous
execution error
•
Executed dedicated instructions
simultaneously.
⎯
•
Do not use dedicated instructions
simultaneously.
7FF1
H
Control data error
•
Setting value is incorrect.
•
Setting value is out of range.
⎯
•
Correct the setting value in the control
data.
7FF2
H
Communication
protocol setting
error
•
Instruction cannot be executed with the
current communication protocol.
⎯
•
Correct the setting value of the
communication protocol.
7FF3
H
to
7FF4
H
System error
•
The OS of the Q series C24 detected
some error.
⎯
( 1)
7FF5
H
Processing
cancelled due to
mode switching,
transmission
sequence
initialization, etc.
•
The processing in operation was
cancelled due to execution of the
following:
<Mode switching, transmission sequence
initialization, reception data clear (by
buffer memory), user frame use
enable/disable designation, UINI
instruction, programmable controller
CPU information clear>
⎯
•
Do not execute these functions during
any other processing.
7FF7
H
Simultaneous
access error
•
Multiple external devices accessed a
remote station on the same network at
the same time.
⎯
•
Multiple external devices must not
access a remote station on the same
network at the same time.
7FF8
H
7FFF
H
System error
•
The OS of the Q series C24 detected
some error.
⎯
( 1)
B000
H
to
BFFF
H
⎯ •
Errors detected by the CC-Link module
⎯
•
Take corrective action by referring to
the CC-Link Master/Local Module
User's Manual.
C000
H
to
CFFF
H
⎯ •
Errors detected by the Ethernet module
⎯
•
Take corrective action by referring to
the Ethernet Interface Module User's
Manual.
D000
H
to
DFFF
H
⎯
•
Errors detected by the CC-Link IE Field
Network module
⎯
•
Take corrective action by referring to
CC-Link IE Field Network User’s
Manual.
E000
H
to
EFFF
H
⎯
•
Errors detected by the CC-Link IE
Controller Network module
⎯
•
Take corrective action by referring to
CC-Link IE Controller Network
Reference Manual.
F000
H
to
FFFF
H
⎯
•
Errors detected by the MELSECNET/H,
MELSECNET/10 network system
⎯
•
Take corrective action by referring to
MELSECNET/H, MELSECNET/10
network system reference manual.
1 Take corrective action in the following procedure.
1) Check whether the Q series C24, power supply module and CPU module are
mounted correctly on the base unit.
2) Check whether the operating environment of the Q series C24 is within the
general specifications range of the CPU module.
3) Check whether the power supply capacity is sufficient or not.
4) Check whether the hardware of the Q series C24, CPU module and base unit
are normal according to the manuals of the corresponding modules.
If any module is faulty, please contact your local Mitsubishi service center or
representative for repair.
5) If the problem cannot be solved through the above steps, please consult your
local Mitsubishi service center or representative, explaining a detailed
description of the problem.