Specifications

Without mounting off the module from the base unit, the serial number can be
checked on the front of the module.
The serial numbers can be also checked on the screen of GX Developer.
Programming
tool
Latch data
Backup
file
(Standard ROM)
File register
(Standard RAM)
Device data
Device memory
No battery
backup
needed!
CPU built-in memory
Program memory
(Flash ROM)
Program
cache memory
(SRAM)
For program
execution
Program and parameter files are automatically saved in the Flash ROM, which does not
require battery backup. This prevents data loss due to dead battery. This function
improves battery life. Important information such as device data is also protected in case
of dead battery. The data will be backed up in standard ROM, and the backup data
automatically returns when power is turned ON.
[CPU module exchange function using a memory card]
All data in the CPU are backed up to a memory card with a simple operation.
By backing up data regularly, updated parameters and programs are always
stored to a memory card.
In a case of CPU failure, backed up data are restored from the memory card. Thus
the management of the backup data is not required and the recovery time from the
system down can be shortened.
� Shortened recovery time in system down
Backing up
data
CPU built-in memory
Program memory
Standard ROM
Standard RAM
Device data (latch)
Error history
System data
Programming
tool
Store backup data
to the memory card
GOT
Q02U Q04UQ03U Q13U Q20U Q26UQ06U Q10U
Install a memory card to the CPU and store the backup
data to the memory card in advance.
STEP 1
When the CPU is failed, exchange it to the normal CPU
and install the memory card with the backup data.
STEP 2
Execute the backup data restoration function from the
programming tool, and reset the CPU to recover the data.
STEP 3
Q00U Q01U Q02U Q04UQ03UQ00UJ Q26UQ13U Q20UQ06U Q10U
� The serial number is indicated on the front of module
Serial number on the
front of module
Displayed on the Product Information
List screen of GX Developer
[Utilizing Q Series programs]
The existing QCPU programs can be utilized by changing the PLC type on GX Developer.
Switching of a module to Universal model CPU is performed smoothly.
GX Developer
CPUs can be switched easily
by changing the PLC type.
Q01UCPU
Q01UCPUQ01CPU
Q01CPU
Read from PLC Write to PLC
Change PLC type
Q01UCPU Q02UCPU
[Compatibility with Q Series modules]
The standard Q Series modules can be used without modification. Common modules can
be used for the existing system and new system, lowering maintenance costs.
� Highly compatible with standard Q Series
MELSEC-Q Series
HMI
GOT1000 Series
Multiple CPU
high speed
main base unit
Programmable
controller CPU
・Basic model
(3 models*)
・ High Performance model
(5 models)
・Process CPU
(4 models)
*Q00UJCPU/Q00JCPU is a power supply and 5-slot base unit integrated type CPU.
・Universal model
(18 models*)
[New model] [Previous model]
Q03UDEHCPU Q26UDEHCPU
Q26UDEHCPU
Easy
checking of
serial
numbers
Common
spare parts
Common modules
Programmable
controller CPU
Main base
unit
Power supply
module
Other Q Series
modules
� Secure data even after prolonged storage
Program
protection
against
dead battery
Backup
execution
condition is
ON
Write programs
Compatible model:
Compatible model:
Upgraded Function
Install the memory card and restore the data.
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