268 T1/T1S User’s Manual
8. Special I/O Functions

8.1 Special I/O function overview

The T1/T1S supports the special I/O functions as listed below.

Function name Function summar
y
Remarks
Variable input filter
constant Input filter constant (ON/OFF dela
y
time) can be set b
y
user pro
g
ram. The settin
g
ran
g
e is 0 to 15 ms
(1 ms units). Default value is 10 ms. This function is
applied for X000 to X007 (8 points as a block).
SW16 settin
g
is necessar
y
to
use this
function. (Note)
Hi
g
h
speed
counter
Sin
g
le phase
up-counter Counts the number of pulses of sin
g
le phase pulse
train. 2 channels of pulse input are available. The
countable pulse rate is up to 5 kHz for each channel.
Channel 1 ¼ X000 count input, X002 reset input
Channel 2 ¼ X001 count input, X003 reset input
Onl
y
one
amon
g
these 4
functions can
be selected.
SW16 is used
Sin
g
le phase
speed-
counter
Counts the number of pulses in a specified samplin
g
time. The samplin
g
time settin
g
is 10 to 1000 ms (10
ms units). 2 channels of pulse input are available. The
countable pulse rate is up to 5 kHz for each channel.
Channel 1 ¼ X000 count input
Channel 2 ¼ X001 count input
to select the
function. (Note)
Quadrature
bi-pulse
counter
Counts the 2-phase pulses whose phases are shifted
90° each other. Counts up when phase A precedes,
and counts down when phase B precedes. The
countable pulse rate is up to 5 kHz.
Phase A ¼X000
Phase B ¼X001
Reset ¼¼ X002
Interrupt input function Immediatel
y
activates the correspondin
g
I/O interrupt
pro
g
ram when the interrupt input is chan
g
ed from OFF
to ON (or ON to OFF). 2 points of interrupt input are
available.
X002 ¼Interrupt 1 (I/O interrupt pro
g
ram #3)
X003 ¼Interrupt 2 (I/O interrupt pro
g
ram #4)
Analo
g
settin
g
function The value of the analo
g
settin
g
adjuster is converted
into di
g
ital value (0 to 1000) and stored in the SW
re
g
ister. 2 adjusters are provided on the T1/T1S.
V0 ¼ SW30
V1 ¼ SW31
No function
selection is
required.
Pulse output function Variable frequenc
y
pulse train can be output. The
available pulse rate is 50 to 5000 Hz (1 Hz units).
Y020 ¼ CW or Pulse (PLS)
Y021 ¼ CCW or Direction (DIR)
Either one
between these
2 functions can
be used.
PWM output function Variable dut
y
c
y
cle pulse train can be output. The
available ON dut
y
settin
g
is 0 to 100 % (1 % units).
Y020 ¼ PWM output
SW26 is used
to select the
function. (Note)
NOTE The above special I/O f unctions, except the variable input filter constant and

analog sett ing functions, ar e available only in the DC input t ypes.

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