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29
Specifications
Section 2-1
High-speed Counter
Inputs
Inputs IN00000 through IN00002 can be used as high-speed counter inputs,
as shown in the following table. The maximum count frequency is 5 kHz in dif-
ferential phase mode and 20 kHz in the other modes.
The minimum pulse widths for inputs IN00000 (A-phase input) and IN00001
(B-phase input) are as follows:
The minimum pulse width for input IN00002 (Z-phase input) is as follows:
Interrupt Inputs
Inputs IN00003 through IN00006 can be used as interrupt inputs (interrupt
input mode or counter mode) and quick-response inputs. The minimum pulse
width for these inputs is 50
µ
s.
Input
Function
Differential phase mode
Pulse plus direction
input mode
Up/down input mode
Increment mode
IN00000
A-phase pulse input
Pulse input
Increment pulse input
Increment pulse input
IN00001
B-phase pulse input
Direction input
Decrement pulse input
Normal input
IN00002
Z-phase pulse input or hardware reset input
(IN00002 can be used as a normal input when it is not used as a high-speed counter input.)
100
µ
s min.
T
1
T
2
T
3
T
4
: 12.5
µ
s min.
Phase A
Phase B
50
µ
s min.
12.5
µ
s
min.
Pulse plus direction input mode, Up/down input
mode, Increment mode
Differential phase mode
12.5
µ
s
min.
T
1
T
2
T
3
T
4
50
µ
s min.
500
µ
s
min.
Phase Z
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