3 ETHERNET INTERFACE MODULE REPLACEMENT
3 ETHERNET INTERFACE MODULE REPLACEMENT
3.2.1 Module performance comparison
(1) Comparison between AnS series and L series (a) Comparison between A1SJ71E71N3-T (10BASE-T)
: Compatible, : Partial change required, ×: Incompatible
*1 Length between hub and node
*2 This is the number of nodes that can be connected when a repeater hub is used. For the number of nodes that can be connected when a switching hub is used, contact the manufacturer of the switching hub used.
3.2 Performance Specifications Comparison
Item
Specifications
Compatibility Precautions for replacement
AnS series L series
A1SJ71E71N3-T LJ71E71-100
Transmission specifications
Transmission speed 10Mbps 100Mbps/10Mbps
Interface RJ45 RJ45 (AUTO MDI/MDI-X)
Communication
mode Half-duplex Full duplex/Half-duplex
Transmission method Base band
Maximum segment
length 100m*1
Maximum number of
nodes/connection Cascade connection: Up to 4 *2
Up to two modules can be connected in a cascade connection when using at 100 Mbps. *2
Transfer data storage memory
Number of allowable simultaneously open connections
8 connections 16 connections
Fixed buffer 1k word × 8 1k word ×16 Change the sequence
program as buffer memory assignments differ. (Refer to Section 3.6.2.)
Random access
buffer 3k words × 2 6k words × 1
No. of occupied I/O points
32 points/slot (I/O assignment: special 32
points)
32 points (I/O assignment: intelli 32
points)
3 ETHERNET INTERFACE MODULE REPLACEMENT
(b) Comparison between A1SJ71E71N-B5 (10BASE5)
: Compatible, : Partial change required, ×: Incompatible
(c) Comparison between A1SJ71E71N-B2 (10BASE2)
: Compatible, : Partial change required, ×: Incompatible Item
Specifications
Compatibility Precautions for replacement
AnS series L series
A1SJ71E71N-B5 LJ71E71-100
Transmission specifications
Transmission speed 10Mbps
Consider converting 10BASE5 to 10BASE-T.
× Communication
mode Half-duplex ×
Transmission method Base band ×
Max. distance
between nodes 2500m ×
Maximum segment
length 500m ×
Maximum number of
nodes/connection 100/segment ×
Minimum node
interval 2.5m ×
Transfer data storage memory
Number of allowable simultaneously open connections
8 connections 16 connections
Fixed buffer 1k word × 8 1k word × 16 Change the sequence
program as buffer memory assignments differ. (Refer to Section 3.6.2.)
Random access
buffer 3k words × 2 6k words × 1
No. of occupied I/O points
32 points/slot (I/O assignment: special 32
points)
32 points (I/O assignment: intelli 32
points) 12VDC external power supply
capacity (Transceiver)
Use a transceiver and AUI cables that satisfy specifications.
Consider converting 10BASE5
to 10BASE-T. ×
Item
Specifications
Compatibility Precautions for replacement
AnS series L series
A1SJ71E71N-B2 LJ71E71-100
Transmission specifications
Transmission speed 10Mbps
Consider converting 10BASE2 to 10BASE-T.
× Communication
mode Half-duplex ×
Transmission method Base band ×
Max. distance
between nodes 925m ×
Maximum segment
length 185m ×
Maximum number of
nodes/connection 30/segment ×
Minimum node
interval 0.5m ×
Transfer data storage memory
Number of allowable simultaneously open connections
8 connections 16 connections
Fixed buffer 1k word × 8 1k word × 16 Change the sequence
program as buffer memory assignments differ. (Refer to Section 3.6.2.)
Random access
buffer 3k words × 2 6k words × 1
No. of occupied I/O points
32 points/slot (I/O assignment: special 32
points)
32 points
(I/O assignment: intelli 32 points)
3 ETHERNET INTERFACE MODULE REPLACEMENT
(2) Comparison between QnAS series and L series (a) Comparison between A1SJ71QE71N3-T (10BASE-T)
: Compatible, : Partial change required, ×: Incompatible
*1 Length between hub and node
*2 This is the number of nodes that can be connected when a repeater hub is used. For the number of nodes that can be connected when a switching hub is used, contact the manufacturer of the switching hub used.
(b) Comparison between A1SJ71QE71N-B5 (10BASE5)
: Compatible, : Partial change required, ×: Incompatible Item
Specifications
Compatibility Precautions for
replace-QnAS series L series ment
A1SJ71QE71N3-T LJ71E71-100
Transmission specification
Transmission speed 10Mbps 100Mbps/10Mbps
Interface RJ45 RJ45 (AUTO MDI/MDI-X)
Communication
mode Half-duplex Full duplex/Half-duplex
Transmission method Base band
Maximum segment
length 100m*1
Maximum number of
nodes/connection Cascade connection: Up to 4 *2
Up to two modules can be connected in a cascade connection when using at 100 Mbps. *2
Transfer data storage memory
Number of allowable simultaneously open connections
8 connections 16 connections
Fixed buffer 1k word × 8 1k word × 16
Random access
buffer 6k words × 1
No. of E2PROM writes Max. 100,000 times on same area in
E2PROM – No E2PROM (Refer to
Section 3.8.) No. of occupied I/O points 32 points/slot
(I/O assignment: special 32 points)
32 points
(I/O assignment: intelli 32 points)
Item
Specifications
Compatibility Precautions for
replace-QnAS series L series ment
A1SJ71QE71N-B5 LJ71E71-100
Transmission specifications
Transmission speed 10Mbps
Consider converting 10BASE5 to 10BASE-T.
× Communication
mode Half-duplex ×
Transmission method Base band ×
Max. distance
between nodes 2500m ×
Maximum segment
length 500m ×
Maximum number of
nodes/connection 100/segment ×
Minimum node
interval 2.5m ×
Transfer data storage memory
Number of allowable simultaneously open connections
8 connections 16 connections
Fixed buffer 1k word × 8 1k word × 16
Random access
buffer 6k words × 1
No. of E2PROM writes Max. 100,000 times on same area in
E2PROM – No E2PROM (Refer to
Section 3.8.) No. of occupied I/O points 32 points/slot
(I/O assignment: special 32 points)
32 points
(I/O assignment: intelli 32 points) 12VDC external power supply
capacity (Transceiver)
Use a transceiver and AUI cables that satisfy specifications.
Consider converting 10BASE5 to 10BASE-T.
3 ETHERNET INTERFACE MODULE REPLACEMENT
(c) Comparison between A1SJ71QE71N-B2 (10BASE2)
: Compatible, : Partial change required, ×: Incompatible
3.2.2 Cable specifications comparison
The L series does not support 10BASE5 and 10BASE2 of the Ethernet standards. Consider converting 10BASE5 and 10BASE2 to 10BASE-T using a media converter.
If 10BASE-T has been used in the AnS/QnAS series system, the connected devices such as hubs
*1or cables can be used without modification.
For details on the connection devices, refer to the MELSEC-L Ethernet Interface Module User's Manual (Basic).
*1 When connecting a hub that does not have the auto-negotiation function
On a connection with a hub that does not have the auto-negotiation function, set the hub side to the half-duplex communication mode.
Item
Specifications
Compatibility Precautions for
replace-QnAS series L series ment
A1SJ71QE71N-B2 LJ71E71-100
Transmission specifications
Transmission speed 10Mbps
Consider converting 10BASE2 to 10BASE-T.
× Communication
mode Half-duplex ×
Transmission method Base band ×
Max. distance
between nodes 925m ×
Maximum segment
length 185m ×
Maximum number of
nodes/connection 30/segment ×
Minimum node
interval 0.5m ×
Transfer data storage memory
Number of allowable simultaneously open connections
8 connections 16 connections
Fixed buffer 1k word × 8 1k word × 16
Random access
buffer 6k words × 1
No. of E2PROM writes
Max. 100,000 times on same area in
E2PROM – No E2PROM (Refer to
Section 3.8.) No. of occupied I/O points 32 points/slot
(I/O assignment: special 32 points)
32 points
(I/O assignment: intelli 32 points)