7-39
7-5 External Input Pulse Functions
• External input pulse functions are listed below:
e
m
a
n
n
o
i
t
c
n
u
F
e
g
a
p
e
c
n
e
r
e
f
e
R
s
k
r
a
m
e
R
g
n
i
t
n
u
o
c
e
s
l
u
p
l
a
n
r
e
t
x
E
9
3
-
7
P
1
-
5
-
7
h
p
a
r
g
a
r
a
P
e
m
i
t
n
o
i
t
c
e
t
e
d
e
l
u
d
o
M
0
4
-
7
P
2
-
5
-
7
h
p
a
r
g
a
r
a
P
Point:
· The external input pulse signal is used for operating the manual pulser or for synchronous operation.
7-5-1 External pulse counting
• External pulses are counted by the 16-bit-length up/down counter.
• The following two types of external input pulse are available:
(1) 90
°
phase differential signal (phase-A/phase-B signal)
(2) Forward pulse + reverse pulse
• The 16-bit up/down counter counts pulses in the range b32676 and -32676.
(The current value of the up/down counter is continuously output in the external pulse input counter area.)
• 90
°
phase differential signal (phase-A/phase-B) is automatically multiplied by 4 before being counted.
(The counter circuit counts up when phase-B advances.)
Waveform
shaping
Multiplied by 4
Phase-B / reverse
Phase-A / forward
Pulse select
Up pulse
Down pulse
External pulse counter
16-bit
Up/down counter
Remark:
· The increase of input pulses sent from the manual pulser is calculated using the following formula:
Increase of pulses = Previous read value - Current read value
Maximum frequency of input pulse : 500kHz multiplied by 4 = 2000kHz
Bit width of counter
: 16 bits
In the above conditions, the constant-period reading time “t” which does not cause the counter to overflow
becomes as follows:
t
≤
32767 / 2000
≈
16.4ms
Содержание micrex-sx NP1F-MP1
Страница 1: ...FEH214a series USER S MANUAL PULSE TRAIN POSITIONING CONTROL COMBINED MODULE...
Страница 28: ...3 10 3 4 Dimensions 3 4 1 NP1F MP1 for 1 axis 3 4 2 NP1F MP2 for 2 axes 90 46 5 75 35 105...
Страница 29: ...3 11 3 4 Dimensions 3 4 3 NP2F LEV Signal converter 95 47 2 10 29 8 39 8 85 95 40 36 6...
Страница 223: ...Section 8 Troubleshooting Page 8 1 LED Indication 8 1 8 2 Error Indication 8 2...
