309
Inverter Positioning Section 5-3
A26 03 In-position Flag ON: In position
OFF: Not in posi-
tion
Turned ON at following times:
• When pulse output to error counter is 
stopped and absolute value of error 
counter present value is less than in-
position range
Turned OFF at following times:
• When pulses are being output to error 
counter
• When absolute value of error counter 
present value is greater than in-posi-
tion range. 
• When power to CPU Unit is turned ON
• When CPU Unit operation starts
• When CPU Unit operation stops
This flag is used as 
an NO condition 
when clearing the 
frequency com-
mand value to zero 
from the user pro-
gram. 
04 Error Counter Error 
Flag
ON: Error counter 
error
OFF: No error
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 error detec-
tion value
Turned OFF at following times:
• When error counter error 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 manu-
ally moving the 
motor shaft while 
positioning is 
stopped. 
05 Error Counter Pulse 
Output Flag
ON: Pulses being 
output
OFF: Pulse output 
stopped
Turned ON at following times:
• When pulse output to error counter is 
started
Turned OFF at following times:
• When pulse output to error counter is 
stopped (including immediate stops 
and deceleration stops)
• When power to CPU Unit is turned ON
• When CPU Unit operation starts
• When CPU Unit operation stops
This flag is used to 
determine whether 
pulses are being 
output to the error 
counter. 
This flag can be 
used to determine 
when internal pulse 
output has been 
completed and 
start the next 
instruction. 
06 Error Counter Pulse 
Output Acceleration/
Deceleration Flag
ON: Pulse output 
to the error counter 
is accelerating or 
decelerating (i.e., 
the frequency is 
changing)
OFF: Pulse output 
to the error counter 
is constant
Turned ON at following times:
• When pulse output frequency to error 
counter is changed by ACC or PLS2 
instruction
Turned OFF at following times:
• During output of a constant pulse fre-
quency to error counter
•  When pulse output to error counter is 
stopped (including immediate stops 
and deceleration stops)
• When power to CPU Unit is turned ON
• When CPU Unit operation starts
• When CPU Unit operation stops
This flag is used to 
detect changes in 
the output fre-
quency when the 
frequency is 
changed stepwise 
for internal pulses 
are being output by 
the ACC or PLS2 
instruction. It can 
be used as a condi-
tion for executing 
ACC or PLS2 dur-
ing internal pulse 
output. 
Word Bits Function Data range Refresh timing Application 
examples