Mitsubishi MELSEC Q Series Programming Manual page 1241
Common instruction 1/2
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Number
Name
Meaning
Backup time
SD674
(Minute and
second)
Backup
information
Backup time
SD675
(Year and day
of week)
Restore time
SD676
(Year and
month)
Restore time
SD677
(Day and
time)
Backup data
Restore time
restration
SD678
(Minute and
information
second)
Restore time
SD679
(Year and day
of week)
Explanation
This register stores the minute and the second when data were
backed up in 2-digit BCD.
b15
to
b12 b11
to
b8 b7
to
b4 b3
Minute
Second
Second
This register stores the year (first two digits) and the day of the
week when data were backed up in BCD.
b15
to
b12 b11
to
b8 b7
to
b4 b3
Higher digits of year (0 to 99)
This register stores the year (last two digits) and the month
when data were restored in 2-digit BCD.
b15
to
b12 b11
to
b8 b7
to
b4 b3
Year
Month
This register stores the day and the hour when data were
restored in 2-digit BCD.
b15
to
b12 b11
to
b8 b7
to
b4 b3
Day
Hour
This register stores the minute and the second when data were
restored in 2-digit BCD.
b15
b8 b7
b4 b3
to
b12 b11
to
to
Minute
Second
Second
This register stores the year (first two digits) and the day of the
week when data were restored in BCD.
b15
to
b12 b11
to
b8 b7
to
b4 b3
Higher digits of year (0 to 99)
Set by
(When Set)
Example:
to
b0
35 min., 48 sec.
3548
H
S
to
b0
(At write)
Example:
1993, Friday
1905
H
Day of the week
0
Sunday
1
Monday
2
Tuesday
3
Wednesday
4
Thursday
5
Friday
6
Saturday
Example:
to
b0
July, 1993
9307
H
Example:
to
b0
31st, 10 a.m.
3110
H
S
b0
Example:
to
(Initial)
35 min., 48 sec.
3548
H
to
b0
Example:
1993, Friday
1905
H
Day of the week
0
Sunday
1
Monday
2
Tuesday
3
Wednesday
4
Thursday
5
Friday
6
Saturday
Corres-
Corres-
ponding
ponding
ACPU
CPU
D9
QnU
New
LCPU
App-233
8
8
8
8
A
6
7
8
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