597
Appendix C
Auxiliary Area
A000 to A447: Read-only Area, A448 to A959: Read/Write Area
Read-only Area (Set by System)
Address Name Function Status
after
mode
change
Status
at star-
tup
Write timing/
Related flags,
settings
Words Bits
A000 --- 10-ms Incre-
menting Free
Running
Timer
This word contains the system timer used after the
power is turned ON.
0000 hex is set when the power is turned ON and
this value is automatically incremented by 1 every
10 ms. The value returns to 0000 hex after reaching
FFFF hex (655,350 ms), and then continues to be
automatically incremented by 1 every 10 ms.
Note: The timer will continue to be incremented
when the operating mode is switched to RUN
mode.
Example: The interval can be counted between pro-
cessing A and processing B without requir-
ing timer instructions. This is achieved by
calculating the difference between the
value in A000 for processing A and the
value in A000 for processing B. The inter-
val is counted in 10 ms units.
Retained Cleared Every 10 ms after
power is turned ON
CPU Unit with unit ver-
sion. 3.0 or later
A001 --- 100-ms Incre-
menting Free
Running
Timer
This word contains the system timer used after the
power is turned ON.
0000 hex is set when the power is turned ON and
this value is automatically incremented by 1 every
100 ms. The value returns to 0000 hex after reaching
FFFF hex (6,553,500 ms), and then continues to be
automatically incremented by 1 every 100 ms.
Note: The timer will continue to be incremented
when the operating mode is switched to RUN
mode.
Retained Cleared Every 100 ms after
power is turned ON
CPU Unit with unit ver-
sion. 3.0 or later
A002 --- 1-s Increment-
ing Free Run-
ning Timer
This word contains a system timer used after the
power is turned ON
0000 hex is set when the power is turned ON and
this value is automatically incremented by 1 every
1 s. The value returns to 0000 hex after reaching
FFFF hex (65,535 s), and then continues to be auto-
matically incremented by 1 every 1 s.
Note: The timer will continue to be incremented
when the operating mode is switched to RUN
mode.
Retained Cleared Every 1 s after power is
turned ON
CPU Unit with unit ver-
sion. 4.0 or later
A050 A05000
to
A05007
Basic I/O Unit
Information,
Rack 0 Slot 0
A bit will turn ON to indicate when the load short-cir-
cuit protection function alarm output has been given.
Only the 4 most LSB are used for the CJ1W-OD202
(2 points per bit), only the LSB is used for the CJ1W-
OD212, OD204, MD232 and only the two most LSB
are used for the CJ1W-OD232. Each bit indicates the
status for one circuit.
1: Short circuited
0: Normal
--- --- Refreshed each cycle.
A05008
to
A05015
Basic I/O Unit
Information,
Rack 0 Slot 1
--- ---
A051 to
A069
A05100
to
A06915
Basic I/O Unit
Information,
Racks 2 to 7
--- ---
A090 to
A093
--- User Program
Date
These words contain in BCD the date and time that
the user program was last overwritten.
A09000 to A09007: Seconds (00 to 59)
A09008 to A09015: Minutes (00 to 59)
A09100 to A09107: Hour (00 to 23)
A09108 to A09115: Day of month (01 to 31)
A09200 to A09207: Month (01 to 12)
A09208 to A09215: Year (00 to 99)
A09308 to A09307: Day of the week
(00: Sunday, 01: Monday, 02: Tuesday, 03: Wednes-
day, 04: Thursday, 05: Friday, 06: Saturday)
Retained Retained Not supported by
CJ1@-CPU@@ CPU
Units
A094 to
A097
--- Parameter
Date
These words contain in BCD the date and time that
the parameters were last overwritten.
The format is the same as above
Retained Retained Not supported by
CJ1@-CPU@@ CPU
Units
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