Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 312

Precautions
The feed current value is changed to "0" at the start.
When fixed-pitch feed control is executed in the absolute position system, the feed current value that is restored when the
control circuit power supply of the servo amplifier or the Multiple CPU system power supply is turned ON again, may be
different from the feed current value before the power supply was turned ON again.
Program example
The program for repeating 1 axis fixed-pitch feed control of Axis 4 is explained as an example.
This program example is explained in the "Q series Motion compatible device assignment" device assignment method.
■Fixed-pitch feed control conditions
• Positioning conditions are shown below.
Item
Servo program No.
Control axis
Control speed
Travel value
• Fixed-pitch feed control start command: X0 Leading edge (OFF  ON)
• Fixed-pitch feed control end command: X1 Leading edge (OFF  ON)
■Operation timing
Operation timing for fixed-pitch feed control is shown below.
[Rq.1120] PLC ready flag
(M2000)
[Rq.1123] All axes servo ON
command (M2042)
[St.1045] All axes servo ON
accept flag (M2049)
Axis 4 [St.1075] Servo ready
(M2475)
Start command (X0)
Servo program start
Axis 4 [St.1040] Start accept
flag (M2004)
End command (X1)
5 POSITIONING CONTROL
310
5.10 Axis Fixed-Pitch Feed Control
Setting
No.300
Axis 4
10000
80000
V
10000
Dwell 1 second
Servo program No.300
Dwell 1 second Dwell 1 second
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