Omron CP1E CPU UNIT SOFTWARE - Page 408

Appendices
A-54
CP1E CPU Unit Software User’s Manual(W480)
A270
and
A271
High-speed Counter 0
PV
Contains the PV of high-speed counter
0. A271 contains the upper 4 digits and
A270 contains the lower 4 digits.
• Cleared when operation starts.
Cleared • Refreshed
each cycle
during the
overseeing
processes.
• Refreshed
when PRV
instruction is
executed to
read the PV.
A272
and
A273
High-speed Counter 1
PV
Contains the PV of high-speed counter
1. A273 contains the upper 4 digits and
A272 contains the lower 4 digits.
• Cleared when operation starts.
Cleared • Refreshed
each cycle
during the
overseeing
processes.
• Refreshed
when PRV
instruction is
executed to
read the PV.
A274 00 High-speed Counter 0
Range 1 Comparison
Condition Met Flag
These flags indicate whether the PV is
within the specified ranges when
high-speed counter 0 is being operated
in range-comparison mode.
• Cleared when operation starts.
• Cleared when range comparison
table is registered.
OFF: PV not in range
ON: PV in range
Cleared • Refreshed
each cycle
during the
overseeing
processes.
• Refreshed
when PRV
instruction is
executed to
read the
results of
range com-
parison.
01 High-speed Counter 0
Range 2 Comparison
Condition Met Flag
02 High-speed Counter 0
Range 3 Comparison
Condition Met Flag
03 High-speed Counter 0
Range 4 Comparison
Condition Met Flag
04 High-speed Counter 0
Range 5 Comparison
Condition Met Flag
05 High-speed Counter 0
Range 6 Comparison
Condition Met Flag
08 High-speed Counter 0
Comparison
In-progress Flag
This flag indicates whether a compari-
son operation is being executed for
high-speed counter 0.
Cleared when operation starts.
OFF: Stopped.
ON: Being executed.
Cleared Refreshed
when compari-
son operation
starts or stops.
09 High-speed Counter 0
Overflow/Underflow
Flag
This flag indicates when an overflow or
underflow has occurred in the
high-speed counter 0 PV. (Used with
the linear mode counting range only.)
• Cleared when operation starts.
• Cleared when PV is changed.
OFF: Normal
ON: Overflow or underflow
Cleared Refreshed
when an over-
flow or under-
flow occurs.
10 High-speed Counter 0
Count Direction
This flag indicates whether the
high-speed counter 0 is currently being
incremented or decremented. The
counter PV for the current cycle is com-
pared with the PV in last cycle to deter-
mine the direction.
OFF: Decrementing
ON: Incrementing
Cleared Setting used
for high-speed
counter, valid
during counter
operation.
Address
Name Function Settings
Status
after
mode
change
Status at
startup
Write
timing
Related
flags,
settings
Words Bits