User`s manual

Troubleshooting Error code list
11 – 32
1310
I/O INT ERROR
An interruption has occurred although there is
no interrupt module.
 Collateral information

Common Information: –
 Individual Information: —
 Diagnostic Timing
During interrupt
Any of the mounted modules is experiencing a
hardware fault. Therefore, check the mounted
modules and change the faulty module.
Contact your local Mitsubishi representative.
OFF Flicker Stop )
1311
I/O INT ERROR
An interrupt request from other than the inter-
rupt module was detected.
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
During interrupt
Take action so that an interrupt will not be issued
from other than the interrupt module.
OFF Flicker Stop Q00J/Q00/Q01
(Function
version is B or
later)
QnU
I/O INT ERROR
An interrupt request from the module where
interrupt pointer setting has not been made in
the PLC parameter dialog box was detected.
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
During interrupt
– Correct the interrupt pointer setting in the
PLC system setting of the PLC parameter dia-
log box.
– Take measures so that an interrupt is not
issued from the module where the interrupt
pointer setting in the PLC system setting of
the PLC parameter dialog box has not been
made.
Correct the interrupt setting of the network
parameter.
Correct the interrupt setting of the intelligent
function module buffer memory.
Correct the basic program of the QD51.
Q00J/Q00/Q01
(Version A)
QnPRH
QnU
1320 LAN CTRL.DOWN
The H/W self-diagnostics detected a LAN con-
troller failure.
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
This suggests a CPU module hardware fault.
Contact your local Mitsubishi representative.
OFF Flicker Stop QnU (with Built-
in Ethernet
port)
1321
1401
SP. UNIT DOWN
– There was no response from the intelligent
function module/special function module in
the initial processing.
– The size of the buffer memory of the intelli-
gent function module/special function module
is invalid.
– An unsupported module is mounted.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset/When intelligent function
module is accessed
– When the unsupported module is mounted,
remove it.
– When the corresponding module is sup-
ported, this suggests a hardware fault of the
intelligent function module/special function
module, CPU module and/or base unit.
Contact your local Mitsubishi representative.
OFF/ON Flicker/
ON
Stop/
Continue
(can be
selected for
each intelli-
gent func-
tion module
by the
parame-
ters)
)
1402
SP. UNIT DOWN
The intelligent function module/special function
module was accessed in the program, but there
was no response.
 Collateral information

Common Information: Module No. (Slot No.)
 Individual Information: Program error loca-
tion
 Diagnostic Timing
When an intelligent function module access
instruction is executed
This suggests a hardware fault of the intelligent
function module/special function module, CPU
module and/or base unit.
Contact your local Mitsubishi representative.
Error
code
Error contents and cause Corrective action
LED status
CPU
status
Corre-
sponding
CPU
RUN ERR.
Tab. 11-3: Error code list (1000 to 1999) for PLC CPUs of MELSEC System Q