Mitsubishi Electric MELSEC Q Series Programming Manual page 61

3 POSITIONING DEDICATED SIGNALS
The deviation counter value is not considered, so that the positioning complete signal (M2401+20n)
turns on with the completion of the command output to positioning address. Use the positioning
complete signal (M2401+20n) together with the in-position signal (M2402+20n) to confirm the
positioning completion of servo axis in the final instruction under program.
(2) Positioning complete signal (M2401+20n) ................... Status signal
(a) This signal turns on with the completion of the command output to
positioning address for the axis specified with the servo program.
It does not turn on at the start or stop on the way using home position return,
JOG operation, manual pulse generator operation or speed control.
It does not turn on at the stop on the way during positioning.
It can be used to read a M-code at the positioning completion.
(Refer to Section 7.1.)
(b) This signal turns off at leading edge of complete signal OFF command
(M3204+20n) or positioning start.
At leading edge of complete signal OFF command (M3204+20n)
Servo program start
Start accept flag
(M2001 to M2032)
Positioning complete signal
(M2401+20n)
Complete signal OFF
command (M3204+20n)
At next positioning start
Servo program start
Start accept flag
(M2001 to M2032)
Positioning complete signal
(M2401+20n)
(c) The positioning complete signal turns ON by the execution of servo program
even if the travel value of the axis specified with the servo program is set to
"0".
V
ON
OFF
OFF
OFF
V
Dwell time
ON
OFF
OFF
CAUTION
3 - 12
Dwell time
ON
OFF
ON
ON
Positioning
Positioning start
completion
ON
OFF
ON
t
t