Mitsubishi FX3U-232-BD User Manual page 257

FX Series PLC User's Manual - Data Communication Edition
Computer Link
7.4 BW Command [Writes Device Memory in 1-Bit Units]
This section explains the control procedure specification method and shows a specification example when the
bit device memory is written all at once.
1. Specification method
The specification method in the control procedure format 1 is shown below:
Batch write command (unit: bit)
E
N
Q
Computer side
PLC side
1) Specify the device point range while satisfying the following conditions:
- 1 ≤ Number of device points ≤ 160
- Head device number + Number of device points -1 ≤ Maximum device number
2) Express the station number, PLC number, number of device points and sum check code in hexadecimal
respectively.
*1. 46 in the FX
2. Specification example
When writing data to five devices from M903 to M907 in the PLC whose station number is 0 (while the
message waiting time is set to 0 ms)
E
N
Q
Computer side
05 30
H
PLC side
Head device
BW
(5 characters)
Written device range
specification
"0 (30H)" indicates the OFF status.
"1 (31H)" indicates the ON status.
* Data on specified number of device points
(Characters of specified number of device points)
*1
and FX Series
1S
0N
This range is regarded as the sum check target.
0 0 F F B W 0 M 0 9 0 3
30 46 46 42 57 30 4D 30 39 30
H H H H H H H H H H
Specifies to turn M903 OFF.
Specifies to turn M904 ON.
Specifies to turn M905 ON.
Specifies to turn M906 OFF.
Specifies to turn M907 ON.
7.4 BW Command [Writes Device Memory in 1-Bit Units]
Number of device points
(2 characters (hexadecimal)
Character area A
*
0 5 0 1 1 0 1 2 6
31 31 31 32 36
33 30 35 30 30
H H H H
H H H H H H
7 Commands
A
C
K
H
A
C 0 0 F F
K
30 30 46 46
06
H H H H H
A
B
C
D
E
F
G
H
I
Apx.
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