100
(b) "Present value < Ring counter lower limit value" or "Ring counter upper limit value <
Present value"
• For counting up
When the value in CH
Present value (RWr10 to RWr11, RWr28 to RWr29) reaches CH
Ring counter
lower limit value (RWw10 to RWw11, RWw28 to RWw29), the value in CH
Ring counter lower limit value
(RWw10 to RWw11, RWw28 to RWw29) is held as the present value. The value "ring counter upper limit
value + 1" is stored in CH
Present value (RWr10 to RWr11, RWr28 to RWr29) at the next count-up pulse
input.
• For counting down
When the value in CH
Present value (RWr10 to RWr11, RWr28 to RWr29) reaches CH
Ring counter
upper limit value (RWw12 to RWw13, RWw2A to RWw2B), the value in CH
Ring counter lower limit
value (RWw10 to RWw11, RWw28 to RWw29) is automatically stored in CH
Present value (RWr10 to
RWr11, RWr28 to RWr29).
Both for counting up and down, the value in CH
Ring counter upper limit value (RWw12 to RWw13, RWw2A
to RWw2B) is not stored in CH
Present value (RWr10 to RWr11, RWr28 to RWr29).
For example, if CH
Count enable command (RY24, RY3C) is turned on when CH
Ring counter lower limit
value (RWw10 to RWw11, RWw28 to RWw29) is 0, CH
Ring counter upper limit value (RWw12 to RWw13,
RWw2A to RWw2B) is 2000, and CH
Present value (RWr10 to RWr11, RWr28 to RWr29) is 3000, the
counting range and the CH
Present value (RWr10 to RWr11, RWr28 to RWr29) change as follows.
(c) Ring counter lower limit value = Ring counter upper limit value
When the ring counter lower limit value equals to the ring counter upper limit value, the counting range is from
-2147483648 to 2147483647 regardless of CH
Present value (RWr10 to RWr11, RWr28 to RWr29).
CH Ring counter upper limit value
(RWw12 to RWw13, RWw2A to RWw2B)
The value of CH Ring counter upper limit
value (RWw12 to RWw13, RWw2A to RWw2B),
2000, is not stored in CH Present value
(RWr10 to RWr11, RWr28 to RWr29).
-2147483648
CH Ring counter lower limit value
(RWw10 to RWw11, RWw28 to RWw29)
CH Present value
(RWr10 to RWr11, RWr28 to RWr29)
0
3000
2000
2147483647
CH Ring counter
lower limit value
(RWw10 to RWw11,
RWw28 to RWw29)
CH Ring counter
upper limit value
(RWw12 to RWw13,
RWw2A to RWw2B)
(2000)
(2000)
CH Present value
(RWr10 to RWr11,
RWr28 to RWr29)
In counting
up
3000
3001
2001
to
-2
-1
0
to
2002
2998
2147483647 -2147483648 to
2999
Counting range
Counting range
The value of CH Ring counter upper limit
value (RWw12 to RWw13, RWw2A to RWw2B),
2000, is not stored in CH Present value
(RWr10 to RWr11, RWr28 to RWr29).
CH Ring counter
lower limit value
(RWw10 to RWw11,
RWw28 to RWw29)
CH Ring counter
upper limit value
(RWw12 to RWw13,
RWw2A to RWw2B)
CH Present value
(RWr10 to RWr11,
RWr28 to RWr29)
In counting
down
3000
2999
-2147483648
2147483647
2147483646
to
to
-1
-2
3002
2001
0
3001
Содержание NZ2GFCF-D62PD2
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Страница 206: ...204 Memo ...
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