Mitsubishi FX3U-ENET, Руководство пользователя

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MELSEC-F
9 WHEN COMMUNICATING DATA USING THE MC PROTOCOL
(b) When reading from or writing to a word device memory
Each word of the word device memory is expressed in hexadecimal values
in 4-bit units sequentially from the higher bit.
(Example)
Indicating the storage contents of data registers D350 and D351
30
H
0 0
30
H
0
30
H
0
30
H
1
31
H
5
35
H
6
36
H
A
41
H
B
42
H
1
31
H
7
37
H
0
30
H
F
46
H
5
35
H
E
35
H
0
30
H
2
32
H
32
H
2
L
H L
H
L
H L
34
H
4
34
H
4
H
30
H
30
H
0 0
B15
0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 1 0 0 0 1
B14B13B12 B11B10B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
0 1 1 1 0 0 0 0 1 1 1 1
B15B14B13B12 B11B10B9 B8 B7 B6 B5 B4 B3 B2 B1 B0
5 6 A B 1 7 0 F
Head device Device
point
Data Data
1: Indicates ON
0: Indicates OFF
The content of D350 indicates 56AB
H
(22187 in decimal)
The content of D351 indicates 170F
H
(5903 in decimal)
POINT
(1) When designating alphabet letters in the character area, use upper case
code.
(2) When data other than an integer value (real number, character string, etc.)
was stored in a word device memory to be read, the stored value is read as
an integer value.
(Example 1)
When the real number (0.75) is stored in D0 and D1, it is read as the
following integer values:
D0 = 0000
H
, D1 = 3F40
H
(Example 2)
When the character string ("12AB") is stored in D2 and D3, it is read as
the following integer values:
D2 = 3231
H
, D3 = 4241
H