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Appendix 4 SPECIAL REGISTER LIST
SD676
Backup data
restration
information
Restore time
(Year and month)
• Stores the last 2 digits of year and month when data is restored in 2-digit
BCD code.
S (Initial) New
QnU
SD677
Restore time (Day
and time)
• Stores the day and time when data is restored in 2-digit BCD code.
SD678
Restore time
(Minute and
second)
• Stores the minute and second when data is restored in 2-digit BCD
code.
SD679
Restore time
(Year and day of
week)
• Stores the first 2 digits of year and day of week when data is restored in
BCD code.
SD681
Program
memory write
(transfer) status
Write (transfer)
status display
(percentage)
Displays the status of writing (transferring) the program memory (flash
ROM) in percentage. (0 to 100%) "0" is set when the write direction is set.
S (At write) New
SD682
Program
memory write
count index
Write count index
up to present
• Stores the index value for the number of write operations to the program
memory (flash ROM) up to the present in BIN 32-bit value.
When the index value exceeds 100 thousand times, "FLASH ROM
ERROR" (error code: 1610) occurs. (The index value is calculated even
when exceeding 100 thousand times.)
Note) The write count does not equal to the index value.(Since a flash
ROM write life is prolonged by the system, 1 is added to the write count
index when writing is performed twice or so.).
S (At write) New
SD683
SD686
Standard ROM
write (transfer)
status
Write (transfer)
status display (per-
centage)
Displays the status of writing (transferring) the standard ROM (flash ROM)
in percentage. (0 to 100%) "0" is set when the write direction is set.
S (At write) New
SD687
Standard ROM
write count index
Write count index
up to present
• Stores the index value for the number of write operations to the standard
ROM (flash ROM) up to the present in BIN 32-bit value.
When the index value exceeds 100 thousand times, "FLASH ROM
ERROR" (error code: 1610) occurs. (The index value is calculated even
when exceeding 100 thousand times.)
Note) The write count does not equal to the index value. (Since a flash
ROM write life is prolonged by the system, 1 is added to the write count
index when the total write capacity after the previous count up reaches
about 1M byte.)
S (At write) New
SD688
SD689
Backup error
factor
Backup error
factor
Stores the factor of the error that occurred in the backup.
0
H : No error
100
H: Memory card not inserted
200H: Size of backup target data exceeded
300H: Memory card write inhibit setting
400H: Memory card write error
500H: Backup target data read error (from program memory)
503H: Backup target data read error (from standard RAM)
504
H: Backup target data read error (from standard ROM)
510
H: Backup target data read error (from system data)
S (Backup error
occurrence)
New
QnU
*1
SD690 Backup status Backup status
Stores the current backup status.
0 : Before backup start
1 : Backup start prepared
2 : Backup start preparation completed
3 : Backup in execution
4 : Backup completed
FF: Backup error
S (Status
change)
New
*1: The module whose first 5 digits of serial No. is "10102" or later. (Except the Q00UJCPU, Q00UCPU, and Q01UCPU)
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
b15
b12to b11
b8
to
b7
b4to
b3 b0
to
Example:
July, 1993
9307
H
Year
Month
b15
b12to b11
b8
to
b7
b4to
b3 b0
to
Day
Hour
Example:
31st, 10 a.m.
3110
H
b15
b12to b11
b8
to
b7
b4to
b3 b0
to
Example:
35 min., 48 sec.
3548
H
SecondSecondMinute
b15
b12
to
b11 b8
to
b7 b4
to
b3 b0
to
0
1
2
3
4
5
6
Example:
1993, Friday
1905
H
Higher digits of year (0 to 99)
Sunday
Saturday
Friday
Thursday
Wednesday
Tuesday
Monday
Day of the week