Omron CS1 -, Operation Manual

Page: 98 / 173

6-4 Section AR Area
78
Address Forced
set/reset
Controlled
by
Details Function Bits
AR 08 00 High-speed
counter 1
status Target Value
Comparison
Flag OFF: In Target Comparison Mode for the
CTBL instruction, indicates that comparison
is not in progress.
Note: This flag is always OFF in range
comparison mode for the CTBL instruction.
ON: In Target Comparison Mode for the
CTBL instruction, indicates that comparison
is in progress.
Note: Unlike range comparison, once
target value comparison is started, it is
continuously executed. This bit can be
used to confirm whether or not comparison
is actually in progress.
Unit Enabled
01 Overflow/
Underflow
Flag OFF: In Linear Counter Mode, there is no
overflow or underflow. In Ring Counter
Mode, this flag is always 0.
ON: In Linear Counter Mode, an overflow
or underflow has occurred. The high-speed
counter PV is fixed at one of the upper
limits. This flag is cleared when the
High-speed Counter Start Bit is turned
OFF.
02 (Reserved
by system.) ---
03 Phase-Z
Input Reset
Flag (ON for
one cycle) If the high-speed counter reset method is
phase Z + software reset (1 Hex is set in
bits 04 to 07 in DM 6605), this flag turns
ON for one cycle when the high-speed
counter’s PV is reset.
Note: If the phase-Z signal (reset input)
turns ON while the High-speed Counter
Reset Bit (bit 01 in AR 09) is ON, this flag
turns ON for one cycle when the
high-speed counter’s PV is reset.
04 to
05 (Reserved
by system.) ---
06 Measuring
Flag (mea-
surement
modes 1 or
2) OFF: Measurement for high-speed counter
rate of change or frequency measurement
is not in progress.
ON: Measurement for high-speed counter
rate of change or frequency measurement
is in progress. After the Measurement Start
Bit (bit 02 in AR 09) is turned ON, this flag
turns ON when sampling starts (in
measurement mode 1) or after 2 ms has
elapsed (in measurement mode 2).
Note: This flag is valid only when the
measurement mode set in the Unit Setup
Area (DM 6606 and DM 6608) is set to
high-speed counter rate of change
(measurement mode 1) or frequency
measurement (measurement mode 2).
07 High-speed
Counter
Operating
Flag OFF: High-speed counter is stopped.
ON: High-speed counter is operating.