D-65
FX Series PLC User's Manual - Data Communication Edition
Computer Link
7 Commands
7.5 WW Command [Writes Device Memory in 1-Word Units]
A
Comm
on I
te
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N:
N N
etwo
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Paral
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Com
puter Li
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In
verter
C
omm
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cation
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on-Proto
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C
ommunicati
on
(R
S/RS
2 Instru
ction
)
G
No
n-
Protoc
ol
Co
mmuni
ca
tion
(FX
2N
-2
32IF)
H
Programm
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Comm
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I
Re
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Ma
intenance
Apx.A
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models
7.5
WW Command [Writes Device Memory in 1-Word Units]
This section explains the control procedure specification method and shows a specification examples when
the word device memory is written all at once or when the bit device memory is written (in 16-point units) all at
once.
1. Specification method
The specification method in the control procedure format 1 is shown below:
1) Specify the device point range while satisfying the following conditions:
- 1
Number of device points
64
*1
(10 in case of bit devices)
- Head device Number of device points ("Number of devices x 16" in case of bit devices) -1
Maximum device number
- When 32-bit devices (CN200 to CN255) are written, one device point is handled as two word data.
Accordingly, up to 32 device points
*2
can be specified.
2) Express the station number, PLC number, number of device points and sum check code in hexadecimal.
*1.
Up to 11 device points in the FX
0N
and FX
1S
Series
*2.
Up to 5 device points in the FX
0N
and FX
1S
Series
2. Specification examples
Example 1: When writing data to thirty-two devices from M640 to M671 in the PLC whose station number is
0 (while the message waiting time is set to 0 ms)
Point
The WW command handles data in 1-word units. When writing data to thirty-two devices from M640 to M671,
specify the number of device points as "02" (One point specifies 16 devices.)
E
N
Q
W W
A
C
K
*
Batch write command (unit: word)
Character area C
One device uses 4 characters.
Four digits (hexadecimal) express
one data word.
Computer side
PLC side
Head device
(5 characters)
Written device
range specification
Number of device points
(2 characters (hexadecimal)
* Data on specified number of device points
(Characters of specified number of device points)
P
LC No.
Sta
tio
n
No.
Mes
sage
w
ait time
S
um check
code
PL
C
N
o.
Sta
tio
n
No.
A
C
K
0 0 F F
0 2
2 3 4 7
A B 9 6 0 5
E
N
Q
0 0 F F W W 0
This range is regarded as the
sum check target.
30
H
30
H
46
H
46
H
57
H
57
H
30
H
4D
H
30
H
34
H
36
H
30
H
32
H
30
H
05
H
30
H
30
H
46
H
46
H
06
H
0 0 1
0
1
1
1
0
0
1
0
0
0
0
1
0
0
1
0
0
1
1
0
1
1
0
0 1
1
1
1
1
M
6
5
6
2
3
6
9
B
A
7
4
M
6
5
7
M
6
5
8
M
6
5
9
M
6
6
9
M
6
7
0
M
6
7
1
M
6
4
0
M
6
4
1
M
6
4
2
M
6
4
3
M
6
5
3
M
6
5
4
M
6
5
5
32
H
37
H
34
H
33
H
41
H
36
H
39
H
42
H
35
H
30
H
Computer side
PLC side
M 0 6 4 0
Summary of Contents for FX-485ADP
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Page 344: ...E 2 FX Series PLC User s Manual Data Communication Edition Inverter Communication ...
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