Mitsubishi Electric FX3U-ENET-ADP - Batch Read in Bit Units (ASCII)

7 Communication Using MC Protocol
61
FX3U-ENET-ADP User's Manual
1
Introduction
2
Specification
3
System Configuration
4
Installation
5
Wiring
6
Introduction of Functions
7
Communication Using MC Protocol
8
The Operation of GX Works2
9
Troubleshooting
A
List of Special Devices
7.3 Message Formats and Control Procedures
b) Reading from or writing to a word device memory
Each word of a word device memory is designated by 16 bits and the designated number of points
from the designated head device are sequentially expressed in one-point units in the order, low byte
(L: bits 0 to 7) to high byte (H: bits 8 to 15).
(Example)
Indicating the storage contents of data registers D350 and D351
<Point>
When data other than an integer value (real number, character string, etc.) is stored in a word device
memory to be read, the adapter reads the stored value 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 = 0000H, D1 = 3F40H
(Example 2)
When the character string ("12AB") is stored in D2 and D3, it is read as the following integer values:
D2 = 3231H, D3 = 4241H
02 H AB H 56 H 0F H 17 H
B7
10101011010101100000
B6 B5 B4 B3 B2 B1 B0
B15
B14
B13
B12 B11 B10
B9 B8
111100010111
B7 B6 B5 B4 B3 B2 B1 B0
B15
B14
B13
B12 B11 B10
B9 B8
AB5 6 0F1 7
LH
B15
01010110101010110001
B14B13B12 B11 B10 B9 B8
B7
B6
B5
B4 B3 B2 B1 B0
011100001111
B15B14B13B12 B11 B10 B9 B8
B7
B6
B5
B4 B3 B2 B1 B0
56AB170F
Data
1: Indicates ON
0: Indicates OFF
170F
H
LH
Data
56AB
H
Device point
The content of D350 indicates 56ABH
(22187 in decimal)
The content of D351 indicates 170F
H
(5903 in decimal)
(L)
(H)
(L)
(H)