5.3 Description of Function Codes
5-252
[Input: digital] Block function code setting
■ Block selection (U01 etc.) (Digital)
Any of the following items can be selected as a logic function block (with general-purpose timer):
The data can be logically inverted by adding 1000.
Data Logic function block Description
0 No function assigned Output is always OFF.
10 Through output +
General-purpose timer
(No timer)
Only a general-purpose timer. No logic function block exists.
11 (On-delay timer) Turning the input signal ON starts the on-delay timer. When the
period specified by the timer has elapsed, the output signal turns
ON. Turning the input signal OFF turns the output signal OFF.
12 (Off-delay timer) Turning the input signal ON turns the 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.
13 (One-shot pulse output) Turning the input signal ON issues a one-shot pulse whose
length is specified by the timer.
14 (Retriggerable timer) Turning the input signal ON issues a one-shot pulse whose
length is specified by the timer.
If the input signal is turned ON again during the preceding
one-shot pulse length, however, the logic function block issues
another one-shot pulse.
15 (Pulse train output) If the input signal turns ON, the logic function block issues ON
and OFF pulses (whose lengths are specified by the timer)
alternately and repeatedly. This function is used to flash a
luminescent device.
20 to 25 Logical AND +
General-purpose timer
AND function with 2 inputs and 1 output, plus general-purpose
timer.
30 to 35 Logical OR +
General-purpose timer
OR function with 2 inputs and 1 output, plus general-purpose
timer.
40 to 45 Logical XOR +
General-purpose timer
XOR function with 2 inputs and 1 output, plus general-purpose
timer.
50 to 55 Set priority flip-flop +
General-purpose timer
Set priority flip-flop with 2 inputs and 1 output, plus
general-purpose timer.
60 to 65 Reset priority flip-flop +
General-purpose timer
Reset priority flip-flop with 2 inputs and 1 output, plus
general-purpose timer.
70, 72, 73 Rising edge detector +
General-purpose timer
Rising edge detector with 1 input and 1 output, plus
general-purpose timer.
This detects the rising edge of an input signal and outputs the ON
signal for 5 ms (*1).
80, 82, 83 Falling edge detector +
General-purpose timer
Falling edge detector with 1 input and 1 output, plus
general-purpose timer.
This detects the falling edge of an input signal and outputs the
ON signal for 5 ms (*1).
90, 92, 93 Rising & falling edges
detector +
General-purpose timer
Rising and falling edge detector with 1 input and 1 output, plus
general-purpose timer.
This detects both the falling and rising edges of an input signal
and outputs the ON signal for 5 ms (*1).
*1: Equals the task cycle: 2 ms for a task cycle of 2 ms, 5 ms for 5 ms, 10 ms for 10 ms, and 20 ms for 20 ms.
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