User`s manual

Troubleshooting Error code list
11 – 48
2221
RESTORE ERROR
The device information backuped by the device
data backup function is incomplete. (Turning
power supply OFF or reset is suspected.)
Do not return the data when this error occurs.
Also, delete the incomplete device information at
the time of this error occurrence.
 Collateral information

Common Information: File name/Drive name
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Reset the CPU module and run it again.
OFF Flicker Stop QnU
2225
RESTORE ERROR
The model name of the restoration destination
CPU module is different from the one of the
backup source CPU module.
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Execute a restore for the CPU module whose
name is same as the backup source CPU mod-
ule.
2226
RESTORE ERROR
– The backup data file is destroyed. (The con-
tent of the file is different from the check
code.
– Reading the backup data from the memory
card is not successfully completed.
– Since the write protect switch of the SRAM
card is set to on (write inhibited), the checked
"Restore for the first time only" setting cannot
be performed.
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
– Execute a restore of other backup data
because the backup data may be destructed.
– Set the write protect switch of the SRAM card
to off (write enabled).
2227
RESTORE ERROR
Writing the backup data to the restoration desti-
nation drive is not successfully completed.
 Collateral information

Common Information: —
 Individual Information: —
 Diagnostic Timing
At power ON/ At reset
Execute a restore for the other CPU module too
because the CPU module may be damaged.
2300
ICM. OPE. ERROR
– A memory card was removed without switch-
ing the memory card in/out switch OFF.
– The memory card in/out switch is turned ON
although a memory card is not actually
installed.
 Collateral information

Common Information: Drive name
 Individual Information: —
 Diagnostic Timing
When memory card is inserted or removed
– Remove memory card after placing the mem-
ory card in/out switch OFF.
– Turn on the card insert switch after inserting a
memory card.
OFF/ON Flicker/
ON
Stop/
Continue
(can be set
in the
parameters
at error
occur-
rence)
Qn(H)
QnPH
QnPRH
QnU (except
Q00UJ-, Q00U-
and Q01UCPU)
Error
code
Error contents and cause Corrective action
LED status
CPU
status
Corre-
sponding
CPU
RUN ERR.
Tab. 11-4: Error code list (2000 to 2999) for PLC CPUs of MELSEC System Q