Counters C

3.10.1 Count processing in refresh system

The counter counts on the leading edge of the input condition of the counter imported at an input refresh.

Ladder example

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When OFF to ON of X5 is counted

 

 

 

 

 

 

twice, C3 contact turns on.

 

Counting method

 

 

 

 

 

 

 

 

 

 

Input (X) refresh

 

Does not count since X5 remains on.

 

 

 

 

OUT

 

OUT

OUT

OUT

 

OUT

 

 

END

C3

END

C3

END

C3 END

C3

END

C3

END

 

ON

 

 

 

 

 

 

 

 

 

X5

OFF

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X5

OFF

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Image)

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

C3 coil

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C3 present

0

 

1

 

 

 

 

 

 

2 ON

value

 

 

 

 

 

 

 

C3 contact

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fig 3.19 Counter Counting Method

REMARKS

Refer to page 85 for the maximum counting speed of the counter.

84

Page 89
Image 89
Mitsubishi Electronics 700 Series, FR-A700 Count processing in refresh system, Counter Counting Method, Counting method