User`s manual

Error code list Troubleshooting
MELSEC System Q, Hardware 11 – 55
3001
PAR AME TE R E RROR
The parameter settings are corrupted.
 Collateral information

Common Information: File name/Drive name
 Individual Information: Parameter No.
 Diagnostic Timing
At power ON/At reset/STOP → RUN/At writing to
programmable controller
– Read the individual information of the error
using GX (IEC) Developer, check the parame-
ter item corresponding to the numerical value
(parameter No.), and correct it.
– Rewrite corrected parameters to the CPU
module, reload the CPU power supply and/or
reset the module.
– If the same error occurs, it is thought to be a
hardware error.
Contact your local Mitsubishi representative.
OFF Flicker Stop )
3002
PAR AME TE R E RROR
When "Use the following file" is selected for the
file register in the PLC file setting of the PLC
parameter dialog box, the specified file does not
exist although the file register capacity has been
set.
 Collateral information

Common Information: File name/Drive name
 Individual Information: Parameter No.
 Diagnostic Timing
At power ON/At reset/STOP → RUN/At writing to
programmable controller
– Read the individual information of the error
using GX (IEC) Developer, check the parame-
ter item corresponding to the numerical value
(parameter No.), and correct it.
– Rewrite corrected parameters to the CPU
module, reload the CPU power supply and/or
reset the module.
– If the same error occurs, it is thought to be a
hardware error.
Contact your local Mitsubishi representative.
OFF Flicker Stop Qn(H)
QnPH
QnPRH
PAR AME TE R E RROR
When "Use the following file" is set for the file
register in the PLC file setting of the PLC para-
meter dialog box and the capacity of file register
is not set, the file register file does not exist in
the specified target memory.
 Collateral information

Common Information: File name/Drive name
 Individual Information: Parameter No.
 Diagnostic Timing
At power ON/At reset/STOP → RUN/At writing to
programmable controller
QnU (except
Q00UJCPU)
PAR AME TE R E RROR
When "Use the following file" is set for the device
data storage file in [PLC file] of [PLC parameter],
and [Capacity] is not set, the device data storage
file does not exist in the target memory.
 Collateral information

Common Information: File name/Drive name
 Individual Information: Parameter No.
 Diagnostic Timing
At power ON/At reset/STOP → RUN/At writing to
programmable controller
QnU
3003
PAR AME TE R E RROR
The automatic refresh range of the multiple CPU
system exceeded the file register capacity.
 Collateral information

Common Information: File name/Drive name
 Individual Information: Parameter No.
 Diagnostic Timing
When an END instruction executed
Change the file register file for the one refreshen-
abled in the whole range.
OFF Flicker Stop Qn(H)
(Function
version is B or
later)
QnPH
QnU
(except
Q00UJCPU)
PAR AME TE R E RROR
The number of devices set at the PLC parameter
device settings exceeds the possible CPU
module range.
 Collateral information

Common Information: File name/Drive name
 Individual Information: Parameter No.
 Diagnostic Timing
At power ON/At reset/STOP → RUN/At writing to
programmable controller
– Read the individual information of the error
using GX (IEC) Developer, check the parame-
ter item corresponding to the numerical value
(parameter No.), and correct it.
– If the error is still generated following the cor-
rection of the parameter settings, the possible
cause is the memory error of the CPU mod-
ule's program memory or the memory card.
Contact your local Mitsubishi representative.
)
Error
code
Error contents and cause Corrective action
LED status
CPU
status
Corre-
sponding
CPU
RUN ERR.
Tab. 11-5: Error code list (3000 to 3999) for PLC CPUs of MELSEC System Q