Mitsubishi Electric MELSEC iQ-R Series User Manual page 77

CH1 Accumulating count value
The accumulated value of the sampling pulse numbers is stored as a 32-bit unsigned binary value. The linear counter or ring
counter count type can be used.
b31
(1) CH1 Accumulating count value (L) (Un\G2)
(2) CH1 Accumulating count value (H) (Un\G3)
(3) Data section
The count range is from 0 to 99999999. Depending on the count type, one of the following operations is performed when the
count range is exceeded.
• When the linear counter is used, Overflow detection (1) is stored in 'CH1 Overflow detection flag' (Un\G6). 'CH1
Accumulating count value' (Un\G2, Un\G3) is fixed to 99999999 until it is reset or preset.
• When the ring counter is used, Carry over detection (1) is stored in 'CH1 Carry over detection flag' (Un\G7). 'CH1
Accumulating count value' (Un\G2, Un\G3) is returned to 0.
■Buffer memory addresses
The following shows the buffer memory addresses of this area.
Buffer memory name
CH Accumulating count value
CH Accumulating count value (when Q series-
compatible mode is used)
■Refreshing cycle
After 'CH1 Count enable' (Y18) is turned on to start the count operation, refreshing is performed in the count cycle set by 'CH1
Count cycle setting value' (Un\G142). The default refreshing cycle is 1s.
■Accumulating count value reset
Carrying out the following resets 'CH1 Accumulating count value' (Un\G2, Un\G3).
• Setting 'CH1 Counter reset request' (Un\G386) to Reset request (1) resets the value to 0. If 'CH1 Preset setting value for
accumulating count value' (Un\G384, Un\G385) is set to a value other than 0, the accumulating count value is preset to the
set value.
• Turning off and on 'Operating condition setting request flag' (Y1) resets the value to 0.
(2)
b16
CH1 CH2
2, 3 18, 19
8, 9 40, 41
b15
(3)
CH3 CH4 CH5
34, 35 50, 51 66, 67
72, 73 104, 105 136, 137
(1)
CH6 CH7 CH8
82, 83 98, 99 114, 115
168, 169 200, 201 232, 233
APPX
Appendix 3 Buffer Memory Areas
b0
A
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