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Points
Station No.
M
II
L1
Send range (first half)
II
L2
L3
256
256
256
256
000
100
200
300
0FF
1FF
2FF
3FF
256
256
256
-
500
600
700
-
5FF
6FF
7FF
-
The following is an example of replacing the A Series master station with Q Series.
●
Instructions
(1) Replace the CPU and other modules on the master station with Q Series while maintaining the existing
network.
(2) Since a Q Series station cannot be the master station, set Local station 1 as the master station, set the link
parameters, and change the station number of the rest of the local stations.
(3) Utilize the existing optical fiber cables.
Note: In MELSECNET(
II
) mode and MELSECNET(
II
) composite mode, only AnA, AnU, or QnA CPU can be used
for the master station.
Product name
Existing model
Replacement model
A61P
A3ACPUP21
Embedded in CPU module
AY�
AX�
A38B
1
1
1
Q61P
Q02HCPU
A1SJ71AP23Q
QY�
QX�
Q38B
A1S61PN
QA1S65B
1
1
1
1
1
1
QC06B
1
1
Send range (second half)
Start
End
Points Start
End
Points
New
Current
Station No.
M
II
L1
II
L3
Send range (first half)
L2
II
L1 ->
II
L2 ->
L3 ->
M ->
256
256
256
256
100
200
300
000
1FF
2FF
3FF
0FF
256
256
-
256
600
700
-
500
6FF
7FF
-
5FF
Send range (second half)
Start
End
Points Start
End
Local station 1
Local station 2
Local station 3
Master station
Local station 3
Local station 1
Master station
Local station 2
MELSECNET(
ΙΙ
) (optical loop)
(including optical fiber cables)
MELSECNET(
ΙΙ
) (optical loop)
(1) System configuration example
Current configuration
Change to local station after replacing master station with QCPU
A3ACPUP21
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
I/O module
I/O module
I/O module
A3ACPUP21
I/O module
I/O module
I/O module
A2ACPUP21
I/O module
I/O module
I/O module
A2NCPUP21
I/O module
I/O module
I/O module
A3ACPUP21
I/O module
I/O module
I/O module
A2ACPUP21
I/O module
I/O module
I/O module
A2NCPUP21
I/O module
I/O module
I/O module
No change
Replace
QA1S65B
Q38B
QC
�
B
Q61P
A1S61PN
A1SJ71AP 23Q
Q02H CPU
I/O module
I/O module
I/O module
Empty
Empty
Empty
●
Module selection example
●
Link parameter settings (MELSECNET(
ΙΙ
) composite mode)
Replace
Power supply module
CPU module
MELSECNET(
Ⅱ
) local station data link module
Extension cable
Output module
Input module
Main base unit
Extension Power supply module
(for A1S Series module)
Extension base (for A1S Series module)
N/A
N/A
—
—
—
—
N/A
—
—
—
4.2.2 Replace A Series master station with Q Series
90
4.2 Replace one of A Series stations with Q Series while retaining MELSECNET(
ΙΙ
)
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