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5.2 Selecting a Counter Format
5.2.2 Selecting the ring counter
5
FUNCTIONS
(2) Count range of the ring counter
(a) Count range is the following three types shown in Table 5.2
• Count range is determined by the ring counter lower limit value (Un\G0 and
1), the ring counter upper limit value (Un\G2 and 3) and the present value
(Un\G12 and 13).
• Range 1 and 2 in Table 5.2 are examples with the following setting.
Ring counter lower limit value (Un\G0 and 1) = -50000
Ring counter upper limit value (Un\G2 and 3) = 100000
Table 5.2 Count range of the ring counter
(()
()()()
()
()
()
() ()
()
)
Count range
Setting condition
Range 1
Ring counter upper
limit value
Ring counter lower
limit value
-50000 to 99999
Subtraction
Addition
Range 2
-2147483648 to -50000
100001 to 2147483647
Range 3
-2147483648 to 2147483647
Count range
Subtraction
Addition
Count range
Count range
Ring counter lower
limit value
(Un\G0 and 1)
Present value
(Un\G12 and 13)
Ring counter upper
limit value
(Un\G2 and 3)
and
or
The present value (Un\G12 and 13) is not included in the setting condition.
Ring counter lower
limit value
(Un\G0 and 1)
Ring counter upper
limit value
(Un\G2 and 3)
Present value
(Un\G12 and 13)
Ring counter lower
limit value
(Un\G0 and 1)
Present value
(Un\G12 and 13)
Ring counter lower
limit value
(Un\G0 and 1)
Ring counter upper
limit value
(Un\G2 and 3)
Ring counter upper
limit value
(Un\G2 and 3)
Subtraction
Addition
Ring counter upper
limit value
Ring counter lower
limit value
Ring counter upper
limit value
Ring counter lower
limit value
+ 2147483647
- 2147483648
+ 2147483647
- 2147483648
+ 2147483647
- 2147483648