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App-162
TableApp.4.4 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD213 Clock data
Clock data
(higher digits of
year, day of week)
• The year (first two digits) and the day of the week are stored as BCD
code as shown below.
S (Request)/U D9028
QCPU
SD220
LED display
data
LED display data
• LED display ASCII data (16 characters) stored here.
(On the Basic model QCPU, the registers store the message (16
characters of ASCII data) at error occurrence (including annunciator
ON).
• The LED display device data at the time of CHK is not stored in the
Basic model QCPU and the Universal model QCPU.
S (When
changed)
New
SD221
SD222
SD223
SD224
SD225
SD226
SD227
SD235
Module to which
online module
change is being
performed
The header I/O
number of the
module to which
online module
change is being
performed /10
H
•10H is added to the value of the header I/O number of which the online
module change is being performed.
S (During online
module change)
New
QnPH
QnPRH
SD240 Base mode
0: Automatic
mode
1: Detail mode
• Stores the base mode. S (Initial) New
QCPU
SD241
Extension stage
number
0: Main base only
1 to 7: Extension
stage number
• Stores the maximum number of the extension bases being installed. S (Initial) New
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 (19 or 20)
Sunday
Saturday
Friday
Thursday
Wednesday
Tuesday
Monday
Day of the week
SD220
SD221
SD222
SD223
SD224
SD225
SD226
SD227
b15
to
b8
b7
to
b0
15th character from
the right
16th character from
the right
13th character from
the right
14th character from
the right
11th character from
the right
12th character from
the right
9th character from
the right
10th character from
the right
7th character from
the right
8th character from
the right
5th character from
the right
6th character from
the right
3rd character from
the right
4th character from
the right
1st character from
the right
2nd character from
the right