The following is an example of replacing a MELSECNET(
ΙΙ
) coaxial loop system's master station with a Q Series
system and upgrading the network to a MELSECNET/10 coaxial bus system.
●
Instructions
(1) Replace one of the MELSECNET(
ΙΙ
) stations with the Q Series.
(2) Replace the complete MELSECNET(
ΙΙ
) system with MELSECNET/10 coaxial bus system.
(3) Replace the CPU of each station with Q Series CPU sequentially, and eventually replace all CPUs with Q
Series CPUs.
(4) Use the existing settings for the network parameters.
• When an existing MELSECNET(
ΙΙ
) system consists of many stations, the complete network
system can be upgraded to MELSECNET/10 while reusing existing cable installations.
• By upgrading the entire network at once, the current network parameter settings can be used.
• Once the network is updated, A Series stations can be replaced with the Q Series in any order
until all the stations are upgraded to the Q Series.
Solution and Benefit
R
R
A2NCPUR21
AJ71BR1
1
Q61P
Q02U CPU
I/O module
I/O module
I/O module
I/O module
Empty
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
I/O module
QJ71BR1
1
Master station
NET/
ΙΙ
(Coaxial loop)
NET/10 (Coaxial bus)
Control station
R
R
R
R
Control station
Control station
Unless the existing network is in MELSECNET mode or MELSECNET
ΙΙ
mode and only the first half is set, the
network parameter settings need to be changed.
If the second half of settings have been made in the MELSECNET
ΙΙ
mode or MELSECNET
ΙΙ
composite
mode, the B and W station send range must be reset, and the station's inherent parameters must be set, etc.
Furthermore, when AnNCPUs, AnACPUs or AnSCPUs are part of the system, the program should be modified
because station inherent parameters cannot be set.
For precautions regarding the existing MELSECNET(
ΙΙ
) system configuration, refer to "Transition from
MELSEC-A/QnA (Large Type), AnS/QnAS (Small Type) Series to Q Series Handbook (Network Modules)".
Current configuration
Transitional step 1
Transitional step 2
Transition completed
Second
replacement
Final
replacement
Initial
replacement
(1) System configuration example
A2NCPUR21
A2SHCPU
A2NCPUR21
A2NCPUR21
A2NCPUR21
A2SHCPU
A2NCPUR21
A2NCPUR21
Empty
A1SJ71AR21
Empty
Empty
A1SJ71BR1
1
AJ71BR1
1
AJ71BR1
1
I/O module
I/O module
I/O module
I/O module
A2NCPUR21
A2NCPUR21
AJ71BR1
1
AJ71BR1
1
Tip
Q61P
Q02U CPU
I/O module
I/O module
QJ71BR1
1
Q61P
Q01U CPU
I/O module
I/O module
QJ71BR1
1
Q61P
Q02U CPU
I/O module
I/O module
QJ71BR1
1
Q61P
Q02U CPU
I/O module
I/O module
QJ71BR1
1
Q61P
Q01U CPU
I/O module
I/O module
QJ71BR1
1
Q61P
Q02U CPU
I/O module
I/O module
QJ71BR1
1
Q61P
Q02U CPU
I/O module
I/O module
QJ71BR1
1
Q61P
Q02U CPU
I/O module
I/O module
QJ71BR1
1
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
Power supply module
4.1.1 Replace MELSECNET(
ΙΙ
) coaxial loop with MELSECNET/10 coaxial bus system
while retaining existing A Series CPUs
4.1 Replace MELSECNET(
ΙΙ
) with MELSECNET/10
4
.
Replacement of MELSECNET Network System
82
4.1 Replace MELSECNET(
ΙΙ
) with MELSECNET/10
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Содержание Artisan MELSEC-A
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