4 . P o s i t i o n i n g U n i ts
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4-13
Speed = = = =
Distance
Time
Distance
Number of revolutions
Number of pul ses
Number of revolutions
Number of pul ses
Time
B
1/A
PPS, pulse/sec
The position control module calculates the pulse frequency (PPS)
= V(I) x x = x = 10,000 P PS
10
4
60
A
B
60,000
60
1,000
100
Example 3:
Combined unit b[1:0] = 10, 11
@
Position: um; Speed: pulse/sec (PPS)
Assume CR#1, #2 (A) = 2,000 (Pulse/REV), CR#3, #4 (B) = 100 (um/REV), target
position P(I) = 10,000 (um), and operation speed V(I) = 10K (PPS), what is the number of
pulses from the pulse instruction of the position control module?
The position control module calculates the number of pulses required to reach P(I)
= = P(I) x = 200,000 PULSE
P( I) um
B/A
A
B
2.
The multiplication of position is set in b2 and b3 of CR#5.
Position: zero point
【
HP
】
(CR#19,#20), target position (I)
【
P(I)
】
(CR#23,#24), target
position (II)
【
P(II)
】
(CR#27,#28) and current position
【
CP
】
(CR#33,#34). The
【
CP
】
(CR#33,#34) value must be multiplied by the values below:
b3
b2
Multiplication
0
0
Position × 10
0
0
1
Position × 10
1
1
0
Position × 10
2
1
1
Position × 10
3
3.
The pulse output type is set in b4 and b5 of CR#5.
b5 b4
Pulse output type (positive logic)
Explanatio
n
0 0
FP
RP
CW pulse
CCW pulse
FP + RP
0 1
FP
RP
p ul se
directi on
(
)
DIR
CW
CCW
Pulse +
direction
1 0
1 1
CW
CCW
FP A phase pu lse
RP B ph ase pulse
A/B phase
pulse
4. LSP
input polarity is set in b6 of CR#5.
b[6] = 0: positive logic enabled. When LSP input signal is On, LSP signal will be