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16-9
16 Other Functions
CP2E CPU Unit Software User’s Manual(W614)
16-
3 DM B
a
c
k
u
p
Fu
nct
ion
16
16-
3
-1 Bac
k
in
g Up and R
e
sto
rin
g DM Area D
a
ta
16-3 DM Backup Function
This section describes the function that saves specified words from the DM Area in the built-in Flash
Memory.
The contents of the DM Area (D) can be saved when the user needs it. The contents of the specified
words in the DM Area data can be backed up from I/O memory to the built-in Flash Memory during
operation by turning ON a bit in the Auxiliary Area. The
number of DM Area words to back up is speci-
fied in the
Number of CH of DM for backup
Box in the PLC Setup. If the
Re
s
tore D0- from backup mem-
ory
Check Box is selected in the PLC Setup, the backup data will automatically be restored to I/O
memory when the power is turned back ON so that data is not lost even if power is interrupted.
z
Conditions for Executing Backup
Specified words starting from D0 in the I/O memory can be saved to the built-in Flash Memory by
turning ON A751.15. (These words are called the DM backup words and the data is called the DM
backup data.) A751.15 (DM Backup Save Start Bit) can be used in any operating mode (RUN, MON-
ITOR, or PROGRAM mode).
z
Words that can be Backed Up
•
E
-type CPU Units: D0 to D1499
•
S
-type CPU Units: D0 to D6999
•
N
-type CPU Units: D0 to D14999
16-3-1 Backing Up and Restoring DM Area Data
Overview
CP2E CPU Unit
A751.15 (DM B
a
ck
u
p
Sa
ve
S
t
a
rt Bit) t
u
rned ON.
I/O Memory
DM Are
a
(D)
S
pecified n
u
m
b
er
of word
s
DM
ba
ck
u
p d
a
t
a
D
a
t
a
ba
cked
u
p.
D
a
t
a
re
s
tored.
B
u
ilt-in Fl
as
h
Memory
~
D0
D (n-1)
S
pecify the n
u
m
b
er of word
s
s
t
a
rting from D0 in the
N
u
m
b
er of CH of DM for
ba
ck
u
p
Box in the
S
t
a
rt
u
p
D
a
t
a
Re
a
d
Are
a
in PLC
S
et
u
p.
DM
ba
ck
u
p d
a
t
a
i
s
re
s
tored to the I/O memory when power
su
pply i
s
t
u
rned ON
a
g
a
in if the
Restore
D0- from
ba
ck
u
p memory
Check Box i
s
s
elected in the
S
t
a
rt
u
p D
a
t
a
Re
a
d
Are
a
in the PLC
S
et
u
p.
Содержание SYSMAC CP Series
Страница 1: ...USER S MANUAL Cat No W614 E1 01 SYSMAC CP Series CP2E E D CP2E S D CP2E N D CP2E CPU Unit Software ...
Страница 3: ......
Страница 32: ...1 Overview 1 4 CP2E CPU Unit Software User s Manual W614 ...
Страница 44: ...3 CPU Unit Operation 3 8 CP2E CPU Unit Software User s Manual W614 ...
Страница 116: ...6 I O Allocation 6 8 CP2E CPU Unit Software User s Manual W614 ...
Страница 144: ...7 PLC Setup 7 28 CP2E CPU Unit Software User s Manual W614 ...
Страница 170: ...10 Interrupts 10 14 CP2E CPU Unit Software User s Manual W614 ...
Страница 200: ...11 High speed Counters 11 30 CP2E CPU Unit Software User s Manual W614 ...
Страница 272: ...12 Pulse Outputs 12 72 CP2E CPU Unit Software User s Manual W614 ...
Страница 278: ...13 PWM Outputs 13 6 CP2E CPU Unit Software User s Manual W614 ...
Страница 460: ...18 Programming Device Operations 18 28 CP2E CPU Unit Software User s Manual W614 ...
Страница 576: ...Revision 2 CP2E CPU Unit Software User s Manual W614 ...
Страница 577: ......