User`s manual

104
4.2.2 Ring counter function
(1) Operation of the ring counter
When ring counter is selected, pulses are counted repeatedly within the range between CH1 Ring counter lower
limit value (Un\G1010, Un\G1011) and CH1 Ring counter upper limit value (Un\G1012, Un\G1013) specified by
the user in the buffer memory.
Overflow/underflow errors do not occur under the ring counter function.
The preset/replace function and the comparison output function can be used together.
(2) Counting range of the ring counter
The counting range of the ring counter is determined by the relationship between CH1 Present value (Un\G1050,
Un\G1051) and CH1 Ring counter lower limit value (Un\G1010, Un\G1011)/CH1 Ring counter upper limit value
(Un\G1012, Un\G1013) at the time when CH1 Count enable command (Y06) is turned on or when the preset/
replace function is performed.
Normally, the counting range is as follows:
Ring counter lower limit value Present value Ring counter upper limit value
[phone]
CH1 Ring counter upper limit value
(Un\G1012, Un\G1013)
CH1 Ring counter lower limit value
(Un\G1010, Un\G1011)
-2147483648
CH1 Present value
(Un\G1050, Un\G1051)
AdditionSubtraction