Mitsubishi Electric A173UHCPU Programming Manual page 39

3. POSITIONING SIGNAL
(2) Positioning completed signal (M2401+20n)
(a) This signal comes ON when positioning control of the axis designated by
the SVST instruction in the sequence program is completed.
It does not come ON when positioning control is started, or stopped part
way through, due to a zeroing, JOG operation, manual pulse generator
operation, or speed control.
It does not come on when positioning is stopped part way through.
It can be used, for example, to read an M-code on completion of positioning.
(See Section 8.2.)
(b) The positioning completed signal goes OFF at the leading edge (OFF→ON)
of the end signal OFF command (M3204+20n), or when a positioning
control start is completed.
At the leading edge (OFF → → → → ON) of the end signal OFF command
(M3204+20n)
SVST instruction
Start reception flag
(M2001+n)
Positioning completed
signal (M2401+20n)
End signal OFF command
(M3204+20n)
When the next positioning control start is completed
SVST instruction
Start reception flag
(M2001+n)
Positioning completed
signal (M2401+20n)
V
ON
OFF
OFF
OFF
Dwell time
V
ON
OFF
OFF
3 − 8
Dwell time
ON
ON
Positioning strat
Positioning
completed
ON
t
t