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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 summary
Remarks
Variable input filter
constant
Input filter constant (ON/OFF delay time) can be set by
user program. The setting range 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 setting
is necessary to
use this
function. (Note)
High
speed
counter
Single phase
up-counter
Counts the number of pulses of single 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
Only one
among these 4
functions can
be selected.
SW16 is used
Single phase
speed-
counter
Counts the number of pulses in a specified sampling
time. The sampling time setting 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
¼
X000
Phase B
¼
X001
Reset
¼¼
X002
Interrupt input function Immediately activates the corresponding I/O interrupt
program when the interrupt input is changed from OFF
to ON (or ON to OFF). 2 points of interrupt input are
available.
X002
¼
Interrupt 1 (I/O interrupt program #3)
X003
¼
Interrupt 2 (I/O interrupt program #4)
Analog setting function The value of the analog setting adjuster is converted
into digital value (0 to 1000) and stored in the SW
register. 2 adjusters are provided on the T1/T1S.
V0
¼
SW30
V1
¼
SW31
No function
selection is
required.
Pulse output function
Variable frequency 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 duty cycle pulse train can be output. The
available ON duty setting is 0 to 100 % (1 % units).
Y020
¼
PWM output
SW26 is used
to select the
function. (Note)
NOTE
The above special I/O functions, except the v
ariable input filter constant
and
analog setting functions, are available only in the DC input types.
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