Specifications
18
17
Existing MELSECNET/B twisted pair cables are used to build the MELSECNET/H network system when
replacing AnS/QnAS A Series modules (MELSECNET/B) with Q Series modules.
Modules are replaced without modifying the previously laid network cables.
A high-speed and large-volume network system can also be built using CC-Link cables.
■MELSECNET/H Network Module (twisted bus type)
Utilize existing MELSECNET/B twisted pair cables
Utilize the existing network cables
to build MELSECNET/H network systems.
MELSECNET/H Network Module
Control
station
Terminating
resistor
Normal
station
Normal
station
Normal
station
Normal
station
Normal
station
Terminating
resistor
Step-by-step transition from the existing AnS/QnAS modules with MELSECNET/10 network system to Q Series with
MELSECNET/H(10) network system.
The transition for both of PLC to PLC network system and Remote I/O network system is completely executed with
the step-by-step replacement from AnS/QnAS Series modules to Q Series modules.
■MELSECNET/H Network Module (optical loop type, coaxial bus type)
AnS/QnAS Series
Q Series
An
Qn
MELSECNET
/10
A1
A2 A5
A3 A4
MELSECNET
/10
A1
Q2 A5
Q3 A4
MELSECNET
/H(10)
Q1
Q2 Q5
Q3 Q4
●Model list
(for PLC to PLC network, Remote I/O network)
New
*1: The collective replacement from coaxial loop type of MELSECNET/H
network system to coaxial bus type.
This module isn't compatible with MELSECNET/H coaxial bus type system,
therefore the step-by-step replacement is not available.
*2: All remote I/O stations should be replaced to Q Series modules when
replacing remote I/O network system.
Q Series master station and AnS/QnAS Series remote I/O stations cannot
be mixed on the same remote I/O network system.
*3: AnS/QnAS Series and Q Series modules can be mixed on the same network,
please use this product whose first 5-digit serial number is 15012 or later.
AnS/QnAS Series models Q Series replacement model
A1SJ71QLP21S
QJ71LP21-25
※2
QJ71LP21S
※2
QJ71BR11
※2
●Model list
(for Remote I/O network)
A1SJ72QLP25
A1SJ72QBR15
A1SJ72QLR25
※1
QJ72LP25-25
※3
QJ72BR15
※3
QJ72BR15
Model
QJ71NT11B
MELSECNET/H Network Module (twisted bus type)
●Model list
Outline
【Before transition】 【Transitional step】 【Transition completed】
Step-by-step replacement from AnS/QnAS
modules to Q Series
A1SJ71BR11
A1SJ71QBR11
A1SJ71LR21
※1
A1SJ71QLR21
※1
A1SJ71LP21
A1SJ71QLP21
AnS/QnAS Series models Q Series replacement model
Further network upgrade options are available because of the continued production of MELSECNET/10 modules.
A complete MELSECNET(Ⅱ) system can be replaced with MELSECNET/10 while reusing the existing cable installations.
Following the network replacement, the AnS/QnAS Series stations can be replaced with Q Series stations as needed
in a step-by-step manner.
However, the step-by-step transition is not possible if the network includes of a combination of AnS/QnAS Series and
Q Series stations, because AnS/QnAS Series does not support MELSECNET/H twisted bus system.
MELSECNET/10 Network Modules
(Production continues)
Replace MELSECNET(II) systems to Q Series
MELSECNET/H(10) systems useing existing wiring.
AnS/QnAS Series
Q Series
An
Qn
MELSECNET
(Ⅱ)
【Before transition】
【Transitional step 1】
(One or more AnASCPU or QnASCPU modules
are required as a control station.)
【Transitional step 2】
A1
A2 A5
A3 A4
MELSECNET
/10
A1
A2 A5
A3 A4
MELSECNET
/10
Q1
A2 A5
Q3 A4
【Transition completed】
MELSECNET
/H(10)
Q1
Q2 Q5
Q3 Q4
■Step-by-step transition from AnS/QnAS and Q Series combined system to Q Series system.
Replace MELSECNET(Ⅱ) data link modules at all stations
with MELSECNET/10 network modules, and then switch
the network system over to MELSECNET/10.
For stations that are to be changed from
AnS/QnAS Series systems to Q Series systems,
replace the programmable controllers to Q Series,
and set them as MELSECNET/10 normal stations.
By gradually transferring the AnS/QnAS Series
systems to the Q Series systems, you will be able
to complete the transition to the Q Series system.
・Change the MELSECNET(Ⅱ) master station to the MELSECNET/10
control station.
Note: For CPU modules (AnSCPU) that cannot be
set as the MELSECNET/10 control stations, please
consider changing to the Q Series.
・Set the MELSECNET(Ⅱ) local stations to the MELSECNET/10
normal stations.
■Network module options
Product name
MELSECNET/10 network module
Model
Control/normal station Remote I/O station
A1SJ71LP21
A1SJ71BR11
A1SJ71QLP21
A1SJ71QBR11
−