Mitsubishi A1SJH - Page 159

APPENDICES
APP - 25
MELSEC-
A
Table 2.2 Special registers list (Continue)
Number Name Description Details Applicable CPU
D9061
Communication
error code
0: Normal
1: Initial data error
2: Line error
• Stores error code when M9061 is turned on
(communication with I/O modules or remote terminal
modules fails).
• 1...........Total number of stations of I/O modules or
remote terminal modules or number of retries is
not normal. Initial program contains an error.
• 2...........Cable breakage or power supply of I/O modules
or remote terminal modules is turned off.
—
Usable with A2C
and A52G.
D9068
Abnormal base
module
Stores the bit pattern of
the abnormal base
module
Stores the bit pattern of the base module in abnormal
condition.
When basic base module is abnormal: Bit 0 turns ON.
When 1st expansion base module is abnormal: Bit 1
turns ON.
When 2nd expansion base module is abnormal: Bit 2
turns ON.
·
·
·
·
When 7th expansion base module is abnormal: Bit 7
turns ON.
—
Dedicated to
QCPU-A
(A Mode)
D9072
PC
communication
check
Data check by
AJ71C24
• In the loopback test mode of individual AJ71C24, the
AJ71C24 automatically executes data write/read and
communication check.
Usable with all
types of CPUs.
D9073 Clock data
Clock data
(year, month)
• Two digits showing the year (XX of 19XX) and month are
stored to D9073 in BCD codes, as shown below.
Year Month
Example:
1987,Jul
y
H8707
B11 B8 B7 B4 B3 B0B15 B12
..... ...... ....... ........
D9074 Clock data
Clock data
(day, time)
• Two digits showing the day and time are stored to D9074
in BCD codes, as shown below.
Day
Time
B11 B8
B7 B4 B3
B0B15 B12
..... ...... ....... ........
Example:
31th,10
o'cloc
k
H3110
Dedicated to
A2CCPUC24
(-PRF)
D9075 Clock data
Clock data
(minute, second)
• Two digits showing the minute and second are stored to
D9075 in BCD codes, as shown below.
Minute Second
B11 B8 B7 B4 B3 B0B15 B12
..... ...... ....... ........
Example:
35 minutes
,
48 second
s
H3548
—
Dedicated to
A2CCPUC24
(-PRF)
D9075
Result of writing
to standard ROM
Stores the status of
writing to the standard
ROM
Stores the status of writing to the standard ROM.
0: Writing enabled
F1
H
: During RAM operation
F2
H
: Writing to standard ROM disabled
F3
H
: Failed to erase
F4
H
: Failed to write
FE
H
: Checking erasing
FF
H
: During writing
—
Dedicated to
QCPU-A
(A Mode)
D9076 Clock data
Clock data
(day of the week)
• Two day of the week is stored to D9076 in BCD codes,
as shown below.
B11 B8
B7
B4 B3 B0B15 B12
.... ...... ....... ........
These digits are always
set to 0.
Day of the week
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday
0
1
2
3
4
5
6
—
Dedicated to
A2CCPUC24
(-PRF)