5-144
Chap. 5 FUNCTION CODES
F codes
E codes
C codes
P codes
H codes
A codes
b codes
r codes
J codes
d codes
U codes
y codes
General-purpose timer (U04, etc.)
The table below lists the general-purpose timers available.
Data Function Description
0
No timer
1
On-delay timer
Turning an input signal ON starts the on-delay timer. When the period specified by
the timer has elapsed, an output signal turns ON.
Turning the input signal OFF turns the output signal OFF.
2
Off-delay timer Turning an input signal ON turns an output signal ON.
Turning the input signal OFF starts the off-delay timer. When the period specified
by the timer has elapsed, the output signal turns OFF.
3
Pulses (1 shot)
Turning an input signal ON issues a one-shot pulse whose length is specified by
the timer.
4
Retriggerable timer
Turning an input signal ON issues a one-shot pulse whose length is specified by
the timer.
If an input signal is turned ON again during the preceding one-shot pulse length,
however, the logic circuit issues another one-shot pulse.
5
Pulse train output
If an input signal turns ON, the logic circuit issues the ON and OFF pulses (whose
lengths are specified by the timer) alternately and repeatedly. This function is used
to flash a luminescent device.
The operation schemes for individual timers are shown below.
(1) On-delay timer (2) Off-delay timer
OFF
ON
Timer
Input
Output
Timer period
OFF
ON
OFF
ON
OFF
OFF
OFF
ON
Timer
Input
Output
Timer period
OFF
ON
OFF
OFF
ON
ON
ON
OFF
(3) Pulses (1 shot) (4) Retriggerable timer
OFF
ON
Timer
Input
Output
Timer period
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
Timer
Input
Output
Timer period
OFF
OFF
ON
ON
OFF
OFF
OFF
ON
ON
10.00秒
Timer period
Less than
timer period
(5) Pulse train output
OFF
ON
Timer
Input
Output
Timer period
OFF
ON
ON
OFF
OFF
OFF
ON
ON
Timer (U05, etc.)
U05 and other related function codes specify the general-purpose timer period or the increment/decrement counter
value.
Data Function Description
Timer period
The period is specified by seconds.
0.00 to 600.00
Counter value
The specified value is multiplied by 100 times. (If 0.01 is specified, it is
converted to 1.)
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