Hakko Electronics Monitouch V Series, Справочное руководство

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Chapter 23 CF Card (V7 Only)
23-20
♦
Cache Action
•
Cache Size > Sample Buffer Size
- Constant Sample
1 sample: 8 word (No. of sample words 6 + 2)
No. of samples: 30 times
Cache size: 256 words
•
Cache Size < Sample Buffer Size
- Constant Sample
1 sample: 8 word (No. of sample words 6 + 2)
No. of samples: 50 times
Cache size: 256 words
♦
Alarm Sample
In the alarm sample, information about “operation time,” “occurrence frequency,”
and “occurrence time” is also stored. These data is always stored in the different
memory from cache memory. When the conditions of output from the cache to a
CF card are established, it is output to a CF card with the cache data.
1
2
240
Sample buffer size
8
×
30 = 240 words Cache size
256 words
When the number of samples has
reached its maximum, save 240 words
to a CF card. When the cycle of sample
is 10 seconds, save to a CF card once
per 300 seconds (5 minutes).
1
2
256
Sample buffer size
8
×
50 = 400 words
Cache
The first time
256 words
When the number of samples has
reached its maximum, save 256 words
to a CF card. When the sampling buffer
is full, save 144 words to a CF card.
These actions will be repeated.
Cache
The second time
144 words