Mitsubishi Electric Melsec A Series - Page 82

REPLACEMENT OF MELSECNET (II) AND /B (PLC TO PLC NETWORK)
2 - 45
2
Data flow between each station of MELSECNET/H is shown at next page.
1Mp3
0 100 180
2Mp3 2Ns1 2Ns2 1Ns2 1Mp3 2Mp3 2Ns1 2Ns2 1Ns2
200 280 400380 680500 580 600 77F 1FFF
0 100 180 200 280 400380 680500 580 600
6F
F
1Mp3 2Mp3 2Ns1 1Ns2 1Mp3 2Mp3 2Ns1 2Ns2 1Ns2
200 380 500
Network1
CPU
Flow of LB/LW link data
B/W
LB/LW
LB/LW
2Mp3
2Ns1 2Ns2
2Ns2
2Ns12Mp3
0 200 500 6FF
LB/LW
1Mp3
2Mp3 2Mp3
1Mp3
LB/LW
0 100 180
2Ns2
280 300 400 4FF
LB/LW
0 300 400 4FF
1Mp3
2Mp3
2Ns1
2Ns2
1Mp3
2Mp3
2Ns1
2Ns2
LB/LW
0
100 180 200
280
400 500 580 600 67F
1FFF
B/W
0 100 180
200
280
400 500 580 600 67F
1Mp3
2Mp3
2Ns1
2Ns2
Empty
1Mp3
2Mp3
2Ns1
2Ns2
[Designation of arrow in the figure]
Cyclic communication (common parameter)
Transit by station inherent parameter
Inter-link data transfer
Link fresh
Transfers LB/LW of MELSECNET/H to the device of CPU.
Inter-link data transfer
Link refresh
Link refresh
Station inherent parameter
1Mp3
1Ns1
1Ns2
1Ns2
1Mp3
1Ns1
2Ns2
2Ns1
2Mp3
2Mp3
2Ns1
2Ns2
Gateway station
Link
refresh
Network2
CPU
MELSECNET/H network 1
Control station 1Mp3/
Normal station 1Ns2
Common
parameters
Common
parameters
Common
parameters
Common
parameters
MELSECNET/H network 1
Normal station 1Ns1
MELSECNET/H network 2
Control station 2Mp3
MELSECNET/H network 2
Normal station 2Ns1/
Normal station 2Ns2
Station inherent
parameter
Cyclic
communication
Cyclic
communication
Empty
Empty
Transferred by station
inherent parameter
Network1,2
Gateway station
1Ns1/2Mp3
CPU
Link
refresh
Transferred
by refresh
parameter
Transferred by station
inherent parameter
Cyclic
communication
Transfers LB/LW which has been set on common parameter to all stations
of MELSECNET/H by cyclic communication.
LB/LW which has been set on common parameter is changed to LB/LW,
inherent to MELSECNET/H station, and transferred.
Inter-link data transfer from module 1 to 2
Inter-link data transfer from module 2 to 1
Transfers LB/LW between modules with different
network numbers mounted to one CPU.
Empty