
B-65235EN/02 START-UP PROCEDURE 3. START-UP PROCEDURE
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Setting for use of a separate detector (full closed)
(Example of setting)
When the separate detector detects 1 µm for 1 µm
scale.
Ball screw lead
Number of necessary
position pulses
F.FG
1(mm/rev) 1000(pulses/rev) 1/1
5 5000 1/1
10 10000 1/1
8) Specify the direction in which the motor rotates.
111 Clockwise as viewed from the pulse coder
–111 Counterclockwise as viewed from the pulse coder
9) Specify the number of velocity pulses and the
number of position pulses.
Semi-closed Full-closed
Command unit (µm) 1 1
Initialization bit #0=0 #0=0
Number of velocity pulses 8192 8192
Number of position pulses 12500 Np
Np: Number of position pulses from the separate
detector when the motor makes one turn.
When using a separate detector (full-closed
mode), also specify the following parameters:
=
F.FG numerator (≤ 32767)
F.FG denominator (≤ 32767)
Number of position
necessary for the motor to
make one turn
Number of position pulses
from the separate detector
when the motor makes one turn
(as
irreducible
fraction)
NOTE 2
DMR can also be used with the separate position detector,
provided that F.FG = 0