Mitsubishi Electronics 0 ユーザーズマニュアル

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CHAPTER 8 FUNCTIONS
8
8.
Pulse
 I
nput
 Modes
 and 
Count
in
g M
et
hods
8.
1.
1 T
yp
es of
 pul
se input
 m
odes
(a) 1-phase pulse input
The count method can be selected from 1 multiple and 2 multiples.
The following figure shows the relationship between phase A pulse input and phase B pulse input or CH 
Down count command (Y3, YB).
(b) CW/CCW pulse input
Pulses can be counted up with the A phase pulse input and counted down with the B phase pulse input.
The following figure shows the relationship between A phase pulse input and B phase pulse input.
(c) 2-phase pulse input
The count method can be selected from 1 multiple, 2 multiples, and 4 multiples.
The phase difference between the A phase pulse and B phase pulse determines whether the pulses are 
counted up or down.
The following figure shows the relationship between A phase pulse input and B phase pulse input.
A
B
Pulse input
Encoder
High-speed counter module
   B or CH    Down count command 
(Y3, YB)
Count-up pulse input
Count-down pulse input
Encoder
Encoder
A
B
High-speed counter module
Phase A pulse input
Phase B pulse input
A
B
Encoder
High-speed counter module