1
OVERVIEW
1.2 Program Storage and Operation
1
- 24
1
O
verv
iew
2
Per
fo
rma
nce
S
p
ecifica
tio
n
3
S
equ
en
ce P
ro
g
ra
m
Co
nfig
ura
tio
n a
nd
E
xecut
io
n Co
nd
iti
o
ns
4
I/O N
unb
er
Assig
n
m
e
nt
5
Me
mor
ie
s a
nd
File
s
Ha
nd
led
by CP
U Mo
du
le
6
Func
tions
7
Co
mmu
nic
a
tion
us
in
g
bu
ilt
-i
n E
th
e
rne
t po
rt
s o
f
CP
U mod
u
le
8
Co
mm
un
icatio
n
w
ith
Int
e
lli
ge
nt
Fun
ction
Mo
du
le
2) High Performance model QCPU, Process CPU, Redundant CPU,
Universal model QCPU
* 1 : The standard ROM is used in the following cases.
•For High Performance model QCPU, Process CPU, and Redundant CPU
Writing a program memory to ROM.
•For Universal model QCPU
Storing device comment or user data.
* 2 : The standard RAM is a memory provided for using the file registers, local devices and sampling
trace file without installing a memory card.
The standard RAM is used to speed up access to the file registers.
* 3 : The intelligent function module parameters set by GX Configurator are included.
* 4 : When the sampling trace file is stored in the standard RAM, check the version of the CPU module
and GX Developer. (
* 5 : Only available for the Flash card.
Only read is enabled in PLC program.
* 6 : Refer to the following manual for the CPU shared memory.
QCPU User's Manual (Multiple CPU System)
* 7 : The Universal model QCPU cannot store an error history in the memory card.
* 8 : Can be stored only when the Universal model QCPU is used.
Figure 1.11 Memory configuration and storage destinations of High Performance model QCPU,
Process CPU, Redundant CPU, Universal model QCPU
CPU module
Memory card
Parameter
3
Program
Device initial value
Program memory
Parameter
3
Program
Device initial value
Local devices
Standard ROM
1
Standard RAM
2
6
File register
Parameter
Program
Device initial value
Device comments
Device comments
Device comments
RAM
File register
Local devices
Parameter
Program
Device initial value
Device comments
File register
5
Failure history
7
Sampling trance file
Sampling trance file
ROM
CPU shared memory
4
PLC user data
8
Storage file for latch data
backup function
8
File for SP.DEVST.S.DEVLD
Instruction
8