Mitsubishi Electric MELSEC iQ-R16MTCPU Programming Manual page 315

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 performing fixed-pitch feed control using 2 axes linear interpolation with Axis 2 and Axis 3 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
• Fixed-pitch feed control conditions are shown below.
Item Setting
Servo program No. No.310
Positioning speed 10000
Control axis Axis 2
Travel value 500000
• Fixed-pitch feed control start command: X0 Leading edge (OFF  ON)
■Operation timing
Operation timing for fixed-pitch feed control using 2 axes linear interpolation is shown below.
10000
[Rq.1120] PLC ready flag
(M2000)
[Rq.1123] All axes servo ON
command (M2042)
[St.1045] All axes servo ON
accept flag (M2049)
Axis 2 [St.1075] Servo ready
(M2435)
Axis 3 [St.1075] Servo ready
(M2455)
Start command (X0)
Servo program start
Axis 2 [St.1040] Start accept
flag (M2002)
Axis 3 [St.1040] Start accept
flag (M2003)
Axis 3
300000
Servo program No.310
V
t
5.11 Fixed-Pitch Feed Control Using 2 Axes Linear Interpolation
5 POSITIONING CONTROL
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