A-121
Appendices
CJ2 CPU Unit Software User’s Manual
A-3 Auxiliary Area
App
A-3-1 Read-only Area (Set by System)
A281 A281.00 Pulse Output 1
Pulse Output
Status Flag
This flag will be ON when pulses are being output from pulse out-
put 1 according to an ORG(889), ACC(888), PLS2(887), or
IFEED(892) instruction and the output frequency is being
changed in steps (accelerating or decelerating).
OFF: Constant speed, ON: Accelerating/decelerating
Cleared Cleared Refreshed each
cycle during over-
seeing process.
A281.01 Pulse Output 1
Overflow/Under-
flow Flag
This flag indicates when an overflow or underflow has occurred in
the PV of pulse output 1.
OFF: Normal, ON: Error
Cleared Cleared • Cleared when the
INI(880) instruc-
tion is executed to
change the PV.
• Refreshed when
an overflow or
underflow occurs.
A281.02 Pulse Output 1
Number of
Pulses Set Flag
ON when the number of output pulses for pulse output 1 has been
set with the PULS(886) instruction.
OFF: Not set, ON: Set
Cleared Cleared • Refreshed when
the PULS(886)
instruction is exe-
cuted.
• Cleared when
pulse output is
stopped.
A281.03 Pulse Output 1
Output Com-
pleted Flag
ON when the number of output pulses set with the PULS(886),
PLS2(887), or IFEED(892) instruction has been output through
pulse output 1.
OFF: Output not completed, ON: Output completed
Cleared Cleared Refreshed at the
start or completion
of pulse output in
independent mode.
A281.04 Pulse Output 1
Outputting
Pulses Flag
ON when pulses are being output from pulse output 1.
OFF: Stopped, ON: Outputting
Cleared Cleared Refreshed when
pulse output starts
or stops.
A281.05 Pulse Output 1
No-origin Flag
ON when the origin has not been determined for pulse output 1
and goes OFF when the origin has been determined.
OFF: Origin established, ON: Origin not established
Tur n ed ON
when oper-
ation starts.
Turned
ON when
power is
turned
ON.
• Turned ON when
the pulse output
is reset.
• Turned ON when
an origin search
is started.
• Turned ON when
a limit input is
received and
clearing is set.
• Turned ON when
an overflow or
underflow occurs.
• Turned OFF when
an origin search
is completed.
• Turned OFF when
INI(880) instruc-
tion is executed to
change the PV.
A281.06 Pulse Output 1
At-origin Flag
ON when the PV of pulse output 1 matches the origin (0).
OFF: Not stopped at origin, ON: Stopped at origin
Retained Cleared • Turned ON when
stopped at the
origin.
• Turned OFF when
the origin is left.
Address
Name Function
Status
after mode
change
Status at
startup
Write timing/
Related flags, set-
tings
Words Bits
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