310
Inverter Positioning Section 5-3
Use the following for the present values of the internal pulse and error counter
of inverter positioning.
A26 07 Error Counter Alarm
Flag
ON: Error counter
alarm
OFF: No error
counter alarm
Turned ON at following times:
• When pulse output to error counter is
stopped and absolute value of error
counter present value is greater than
or equal to error counter alarm detec-
tion value
Turned OFF at following times:
• When error counter alarm is reset
• When power to CPU Unit is turned ON
• When CPU Unit operation starts
• When CPU Unit operation stops
This flag can be
used to provide
notification of
excessive pulses in
the error counter,
e.g., when encoder
wiring breaks dur-
ing positioning.
08 to 14 Not used.
15 Inverter Positioning
Output Value Sign
Flag
ON: Positive value
OFF: Negative
value
Turned ON at following times:
• When signed output value is between
0000 0000 and 7FFF FFFF hex.
Turned OFF at following times:
• When signed output value is between
FFFF FFFF and 8000 0000 hex.
This flag can be
used as a direction
signal
A270 00 to 15 Lower 4 digits of
high-speed counter
present value
8000 000 to 7FFF
FFFF hex
(−2,147,483,648 to
2,147,483,647)
The present value of the feedback
pulse from the encoder.
Operation is the same as for a high-
speed counter.
Use as the abso-
lute position of the
workpiece posi-
tioned with inverter
positioning.
A271 00 to 15 Upper 4 digits of
high-speed counter
present value
Word Bits Function Data range Refresh timing Application
examples
Word Bits Function Data range Refresh timing Application
examples
A22 00 to 15 Error counter 0
present value
(signed)
8000 to 7FFF hex
(−32,768 to
32,767)
Cleared to zero at following times:
• When power to CPU Unit is turned ON
• At start of operation
• When an error counter error occurs
Updated at following times:
• Cyclically according to error counter
cycle
Held at following times:
• When Error Counter Disable Bit
(A562.01) is turned ON.
Use to monitor the
difference between
the target value
and the present
value.
A28 00 to 15 Lower 4 digits of
present value of
pulse output to
inverter (relative
value)
8000 0000 to 7FFF
FFFF hex
(−2,147,483,648 to
2,147,483,647)
Contains relative internal pulse output
value when pulses are output to error
counter.
Cleared to zero at following times:
• When power to CPU Unit is turned ON
• When operation is started
• When pulse output to error counter is
started
Updated at following times:
• Cyclically on error counter cycle
These values can
be used to monitor
the present value
of internal pulse
output.
A29 00 to 15 Upper 4 digits of
present value of
pulse output to
inverter (relative
value)
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