Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 1059

2.
Function block with EN/ENO
The following table lists the execution conditions and operation results.
Execution condition
EN
TRUE (Executes operation)
FALSE (Stops operation)
• Timing chart
ON
EN
OFF
ON
(s)
OFF OFF
ON
ENO
OFF
ON
(d)
OFF
(1)
(1): When EN is on and on the falling edge of (s), (d) turns on.
(2): At the next scan, (d) turns off.
(3): When EN is off, (d) holds the output of the previous scan.
Operation error
There is no operation error.
Operation result
ENO
TRUE
FALSE
ON ON
ON ON
OFF
ON ON
ON
OFF OFF
(2) (3)
(d)
Operation output value
Previous output value
ON
ON ON
OFF
ON
28 EDGE DETECTION FUNCTION BLOCKS
ON
ON
OFF
ON
ON
OFF
28.2 Falling Edge Detector
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