Download MELSECNET/10 Network Module User`s Manual (Hardware)

(2) A1SJ71LR21, A1SJ71BR11
Specifications
A1SJ71LR21
A1SJ71BR11
X/Y
8192 points
B
8192 points
W
8192 points
PLC to PLC
Y+B
+(2 W) ≤ 2000 bytes
network
8
Remote I/O y Remote master station → remote I/O station
network
Y+B
+(2 W) ≤ 1600 bytes
8
Item
Maximum
link points
per network
Maximum
link points
per station
y Remote I/O station → remote master station
X+B
+(2 W) ≤ 1600 bytes
8
Communication speed
10Mbps (equivalent to 20Mbps 10Mbps
for multiple transmission)
Communication method
Token ring
Token bus
Synchronization method
Frame synchronization
Encoding method
Manchester encoding
Transmission route format Duplex coaxial loop
Single coaxial bus
Transmission format
Conform to HDLC (frame format)
Maximum number of
255
networks
(The sum total of PLC to PLC network and remote I/O network)
Maximum number of
9 (Only for PLC to PLC network)
groups
32 stations
Number of
PLC to PLC 64 stations
Control station: 1
Control station: 1
stations for
network
Normal
stations:
63
Normal stations: 31
connection
per network Remote I/O 65 stations
33 stations
Remote master station: 1
Remote master station: 1
network
Remote I/O stations: 64
Remote I/O stations: 32
Overall distance
3C-2V
19.2km (300m)
3C-2V
300m (300m)
(Station-to-station
5C-2V
30km (500m)
5C-2V
500m (500m)
distance) *1
Can be extended to 2.5km when
---used with a repeater module
(A6BR10, A6BR10-DC)
Error control method
Retry by CRC (X16+X12+X5+1) and overtime
RAS function
y Loop back function due to abnormality detection and cable
disconnection (A1SJ71LR21)
y Diagnostic function for local link circuit check
y Prevention of system down due to shifting to control station
(Only for PLC to PLC networks)
y Abnormality detection by link special relay, resistor
y Network monitor, each type of diagnostic function
Transient transmission
y N: N communication (Monitor, program upload/download, etc.)
y ZNRD/ZNWR instructions (N: N): AnUCPU dedicated
instructions
4