Omron CP1L - Page 653

619
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
---
A20
and
A21
--- Present Value
of Unsigned
Output Value
0
These words contain the present
value of the unsigned output value
(output value = present value of error
counter × error counter cycle (s) ×
gain) for inverter positioning 0.
Data range: 0000 0000 to
8000 0000 hex (0 to 2,147,483,648)
The maximum and minimum output
values set for inverter positioning 0 in
the PLC Setup are applied.
A21 contains the leftmost 4 digits
and A20 contains the rightmost 4
digits.
--- --- Cleared Every error
counter 0
cycle
---