Omron CJ1W-CTL41-E, Инструкции по эксплуатации

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Counter Types
Section 3-2
30
3-2-1 Circular Counter
Note All of the functions listed in Section 1-3-2 Functional Specifications can be used
if a Circular Counter is configured.
Configuring Circular Counters
A Circular Counter has 32-bits (the full counting range) available to count up- or
downwards over the positive counting range between 0 and the Upper Count
Limit.
Configuring Upper Count
Limit The Upper Count Limit can be configured between 1 and 4,294,967,295
(=FFFFFFFF
H
). By default the Upper Count Limit is equal to the maximum possi-
ble count limit of FFFFFFFF
H
.
For Circular Counters the Counter automatically rolls over to 0 if the Counter Value
exceeds the Upper Count Value and continues counting. If the Counter Value
goes below 0 the Counter rolls over to the Upper Count Value and continues
counting.
CNT3: CNT4:
m+50 m+70
Counter Type:
0 = Circular Counter
CNT1: CNT2:
m+10 m+30
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0
(=00000000 )
≤
≤ ≤
≤
H
H
Rollover
Counter Value
1 Upper Count Limit 4,294,967,295
00000001 Upper Count Limit FFFFFFFF
Up
Counting
Down
Counting
CNT3: CNT4:
m+53 m+73
m+54 m+74
Upper Count Limit
CNT1: CNT2:
m+13 m+33
m+14 m+34
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Set Upper Count Limit for Circular Counters between 00000001
H
and FFFFFFFF
H
.
Per default (=00000000
H
) the Upper Count Limit is equal to FFFFFFFF
H
.