Delta AH500 Manual page 254

AH5 00 Mod ule Manua l
N umber of in put pulse
Example:
A flow counter is used. A pulse represents a flow of 5 cm
Prescale value set: 5
Prescale function selected: 0 (x1)
Count cycle: 0 (1 second)
The figure above shows that the number of input pulses count during the first cycle is 1000.
Number of sampled pulses
=Number of pulses count during a cycle x Scale set by users x Magnification
=1000x5x1=5000 (cm
3. Bit 2 in CR4/CR32/CR60/CR88: If bit 2 in CR4/CR32/CR60/CR88 is turned ON, the function of
averaging the number of sampled pulses will be enabled. If bit 2 in CR4/CR32/CR60/CR88 is
turned OFF, the function of averaging the number of sampled pulses will be disabled.
The function of averaging the number of sampled pulses prevents the number of pulses
sampled in a cycle form being abnormal. Then number of pulses sampled in N cycles is divided
by N. In the figure below, the number of pulses sampled in 3 cycles is divided by 3.
Number of
sampled puls es
2
1
Buffer r egis ter for data convers ion:
Value stored at
the firs t time
1
Note: T he number of pulses sampled in N cy cles is divided by N.
Item
Number of sampled pulses
(Low word)
Number of sampled pulses
(High word)
Number of cycles
7 - 2 2
C oun t c yc le
10 00
/s)
3
Count cy cle
4
3
5
6
8
7
Value stored at
the second ti me
2 3 2 3 4
3 3
Value/Setting value
-200000~200000
2~60
99 2
3 . The unit magnitude set is 1.
9
12
10
11
Value stored at the fir st time
Value stored at the s econd time
Value stored at the thir d time
Time
Value stored at
the second ti me
3 4 5
3
CH0
#20
#21
#7
10 02
Buffer r egis ter
Number of
sampled puls es
Parameter
CH1 CH2 CH3
#48 #76 #104
#49 #77 #105
#35 #63 #91