Delta Electronics Human Machine Interface DOP-A Series User Manual
Page 119
Chapter 2 Creating and Editing Screens|ScrEdit Software User Manual
2-108
Revision Apr. 30th, 2007, 2007PDD23000002
History Setup Dialog Box
The calculation method of the size of the history data file is as follows:
1. dat file
[
]
{
}
MBytes
d
Bytes
c
N
b
Bytes
a
Bytes
Size
File
Actual
)
(
8
1024
1024
)
(
)
(
2
)
(
6
=
+
Ч
Ч
+
a
Time and Date Data
b
Alarm Data
c
Sampling Points
d
Data File Symbol
Example:
Suppose that the user adds two history data. The data length of the fist history data is set to 1
and the sample number of the first history data is set to 10000. The data length of the second
history data is set to 2 and the sample number of the second history data is set to 20000. Both
these two history data all have the time and date recorded, so the required dat file capacity for
these two history data are:
The file capacity of the first history data = [(6Bytes + 2Bytes)
× 10000] + 8 Bytes =
80008Bytes.
The file capacity of the second history data = [(6Bytes + 2
× 2Bytes) × 20000] + 8 Bytes =
200008Bytes.
Total require: 80008Bytes + 200008Bytes = 280016Bytes = Approx. 0.268Mbytes.
2. csv file
MBytes
Bytes
a
N
Size
File
Actual
1024
1024
240
)
(
=
Ч
Ч
a
Sampling Points
Example:
Suppose that the user adds two history data. The data length of the fist history data is set to 1
and the sample number of the first history data is set to 10000. The data length of the second
history data is set to 2 and the sample number of the second history data is set to 20000. Both
these two history data all have the time and date recorded, so the required csv file capacity for
these two history data are:
The file capacity of the first history data = = 10000 × 240Bytes = 2400000Bytes.
The file capacity of the second history data = 20000 × 240Bytes = 4800000Bytes.
Total require: 2400000Bytes + 4800000Bytes = 7200000Bytes = Approx. 6.8Mbytes.
The capacity of USB flash drive and SM Card provided by DOP-A series HMI:
HMI Model
USB Flash Drive
SM Card
AS38 128
MB
N/A
A57 N/A
No
Limit
A75 N/A
No
Limit
A10 N/A
No
Limit
AE57 N/A
No
Limit
AE80 1GB
No
Limit
AE94 1GB
N/A
AE10 1GB
No
Limit