Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1983

■Operation result
1.
Function block without EN/ENO
The operation processing is performed. The operation result is output from (d1) and (d2).
• Timing chart
When (n)=3
ON ON
(s1)
OFF OFF OFF
(s2)
OFF
(d1)
OFF
0 1
(d2)
(1)
(1) When (s1) turns on, the value in (d2) is counted up.
(2) When (s2) turns on, the value in (d2) is initialized.
2.
Function block with EN/ENO
The execution conditions and operation results will be as follows.
Execution condition
EN
TRUE (executed)
FALSE (not executed)
• Timing chart
When (n)=3
ON
EN
OFF
ON ON
(s1)
OFF OFF
(s2)
OFF
ON
ENO
OFF
(d1)
OFF
(d2) 0 1
(1)
(1) When (s1) turns on while EN is on, the value in (d2) is counted up.
(2) When (s2) turns on while EN is on, the value in (d2) is initialized.
Operation error
There is no operation error.
ON ON ON
ON
2 3
Operation result
ENO
TRUE
FALSE
ON ON
ON ON ON
OFF
ON ON
ON
2
ON ON ON
OFF OFF
ON
OFF
OFF
0 1
(2)
(d1), (d2)
Operation result output value
Previous output value
ON ON
ON ON
OFF OFF
ON
OFF
ON ON
OFF
3 0
(2)
36 COUNTER/TIMER FUNCTION BLOCKS
2
ON
1
36.1 Up Counter
36
1981