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Delta Electronics Human Machine Interface DOP-A Series User Manual

Page 119

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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

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