Справочник Пользователя для Mitsubishi Electronics FX3U-CF-ADP

7 Before Programming

7.1 File format available in the CF-ADP

-CF-ADP User's Manual

7.1.4

Data size calculation

When calculating the data size, use the following formula in accordance with the byte count shown in the
table below.

Calculation formula for the byte count that can be written at one time Number of data points : n (n 254)

Calculation formula

Written byte count = 9+(a)+

(1+(b))

Example of the maximum numeric value (When there are 254 floating point data points)

Written byte count = 9+19+

{(1+14)} (Sum of 254 data points) = 3838 byte 3.75kB

Example of character string

Written byte count = 9+19+

{(1+(b))} (Sum of "n" character strings) 16kB

Caution

• When overwriting data, match the data type and byte count in the line.

• Data is not overwritten or read normally if the data type or byte count is different.

Contents of data

Used characters

Number of

bytes

Symbol

Remark

Index

6 digits (expressed in a decimal number from "1" to
"32767")
Space is put in for unused digits.
Plus signs (+) are used in some systems.

6 bytes

Decimal 6 digits

1 character

1 byte

Comma

year/Month/Day

Hour:Minute:Seconds

None

0 byte

(a)

The expression of date and
time depends on the setting
of the region.
Check the used method.

yyyy/mm/dd hh:mm:ss

19 bytes

yy/mm/dd hh:mm:ss

17 bytes

dd/mm/yyyy hh:mm:ss

19 bytes

dd/mm/yy hh:mm:ss

17 bytes

mm/dd/yyyy hh:mm:ss

19 bytes

mm/dd/yy hh:mm:ss

17 bytes

hh:mm:ss

8 bytes

1 character

1 byte

Comma

data

Bit

1 byte

(b)

Decimal 16-bit

6 bytes

Decimal 32-bit

11 bytes

Hexadecimal 16-bit

4 bytes

Hexadecimal 32-bit

8 bytes

Real numbers(Floating point data)
Exponent expression type= #.#######E ##

14 bytes

Character string
(512 half-width/full-width characters maximum)

Character string
size
(1024 bytes
maximum)

CR+LF

Return code at line end

2 bytes

Line feed

254