App - 71
Appendix 2 Special Register List
APPENDICES
(8) Latch area
(9) Redundant CPU information (host system CPU information
*1
)
*1: The host system CPU information is stored.
TableApp.27 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD900
Drive where
power was
interrupted
Access file drive
number during
power loss
• Stores drive number if file was being accessed during power loss.
S (Status
change)
New
QnA
SD901
File name active
during power
loss
Access file name
during power loss
• Stores file name (with extension) in ASCII code if file was being
accessed during power loss.
S (Status
change)
New
SD902
SD903
SD904
SD905
SD906
SD910
RKEY input RKEY input
• Stored in sequence that PU key code was entered.
S (During
execution)
New
SD911
SD912
SD913
SD914
SD915
SD916
SD917
SD918
SD919
SD920
SD921
SD922
SD923
SD924
SD925
TableApp.28 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD952
History of
memory copy
from control
system to
standby system
Latest status of
memory copy
from control
system to standby
system
Stores the completion status of the memory copy from control system to
standby system executed last.
1) Stores the same value as stored into SD1596 at normal completion/
abnormal completion of the memory copy from control system to
standby system.
2) Backed up for a power failure, this special register holds the status of
memory copy from control system to standby system executed last.
3) Cleared to 0 by latch clear operation.
S (Status
change)
New QnPRH
SD901
SD902
SD903
SD904
SD905
SD906
b15
to
b8 b7
to
b0
2nd character 1st character
4th character 3rd character
6th character 5th character
8th character 7th character
2E
H(.)
2nd character of
the extension
1st character of
the extension
3rd character of
the extension
SD910
SD911
SD912
SD913
SD914
SD915
b15
to
b8 b7
to
b0
SD916
SD917
SD918
SD919
SD920
SD921
SD922
SD923
SD924
SD925
2nd character 1st character
4th character 3rd character
6th character 5th character
8th character 7th character
10th character 9th character
12th character 11th character
14th character 13th character
16th character 15th character
18th character 17th character
20th character 19th character
22nd character 21st character
24th character 23rd character
26th character 25th character
28th character 27th character
30th character 29th character
32nd character 31st character