Omron CP1H CPU UNITS - PROGRAMMING 05-2007, Operation Manual

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Appendix D
Auxiliary Area Allocations by Address
Read-only Area (Set by System)
Address Name Function Settings Status
after
mode
change
Status
at star-
tup
Write
timing
Related
flags, set-
tings
Words Bits
A0 --- 10-ms Incre-
menting Free
Running
Timer This word contains the system timer
used after the power is turned ON.
A value of 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 operat-
ing mode is switched to RUN
mode.
Example: The interval can be
counted between processing A and
processing B without requiring timer
instructions. This is achieved by
calculating the difference between
the value in A0 for processing A and
the value in A0 for processing B. The
interval is counted in 10 ms units.
--- Retained Cleared Every
10 ms after
power is
turned ON ---
A1 --- 100-ms Incre-
menting Free
Running
Timer This word contains the system timer
used after the power is turned ON.
A value of 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 operat-
ing mode is switched to RUN
mode.
Example: The interval can be
counted between processing A and
processing B without requiring timer
instructions. This is achieved by
calculating the difference between
the value in A0 for processing A and
the value in A0 for processing B. The
interval is counted in 100 ms units.
--- Retained Cleared Every
100 ms
after power
is turned
ON ---
A90 to
A93 All User Program
Date These words contain in BCD the
date and time that the user program
was last overwritten.
A90.00 to A90.07:
Seconds (00 to 59)
A90.08 to A90.15:
Minutes (00 to 59)
A91.00 to A91.07: Hour (00 to 23)
A91.08 to A91.15:
Day of month (01 to 31)
A92.00 to A92.07: Month (01 to 12)
A92.08 to A92.15: Year (00 to 99)
A93.00 to A93.07: Day of the week
(00: Sunday, 01: Monday, 02: Tues-
day, 03: Wednesday, 04: Thursday,
05: Friday, 06: Saturday)
--- Retained Retained --- ---