Mitsubishi MELSEC iQ-F FX5 series

25 EDGE DETECTION FUNCTION BLOCKS
25.2 Falling Edge Detector
847
25
2. Function block with EN/ENO
The following table lists the execution conditions and operation results.
• Timing chart
Operation error
There is no operation error.
Execution condition Operation result
EN ENO (d)
TRUE (Executes operation) TRUE Operation output value
FALSE (Stops operation) FALSE Previous output value
OFF
ON
ON ON ON ON
EN
OFF OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON ON
(s)
OFF
ON
ON ON ON ON
ENO
OFF OFF
ON
OFF
ON
OFF
ON
(d)
When EN is on and on
the falling edge of (s),
(d) turns on.
When EN is off, (d) holds the output
of the previous scan.
At the next scan,
(d) turns off.