Specifications

1 - 3
(e) By using the inter-link data transfer function, data (LB/LW) can be transferred
to another network without creating a sequence program.
Network No. 1
QCPU Network
module
0
Inter-link data
transfer
LB
Network module 1
Data of network No. 2
3FFF
H
QCPU
Network module 2
LB
0
QCPU Network
module
3FFF
H
Data of network No. 1
Network No. 2
(f) By installing multiple network modules, N:N communication (transient
transmission) with destination stations on eight network systems that use the
PLCs as relay stations can be performed using the routing function.
Transient transmission can be performed using the routing function in a
network system configured only with the MELSECNET/H as well as a
network system that also contains the MELSECNET/10.
QCPU
QJ71
LP21
(-25)
Transient transmission
possible.
Request destination
Request
source
GX Developer
QJ71
LP21
(-25)
QJ71
LP21
(-25)
QCPU
MELSECNET/H
No.1
No.2
QJ71
LP21
(-25)
QJ71
LP21
(-25)
QCPU
MELSECNET/H
MELSECNET/H
MELSECNET/H
No.3
No.4
QJ71
LP21
(-25)
QJ71
LP21
(-25)
QCPU
MELSECNET/H MELSECNET/H
No.6 No.5
QJ71
LP21
(-25)
QJ71
LP21
(-25)
QCPU
QJ71
LP21
(-25)
QJ71
LP21
(-25)
QCPU
MELSECNET/H MELSECNET/H
No.7No.8
QJ71
LP21
(-25)
QJ71
LP21
(-25)
QCPU QJ71
LP21
(-25)
QCPU QJ71
LP21
(-25)
QJ71
LP21
(-25)
QCPU
(g) Either of the following systems can be chosen: the optical loop system
(maximum total extension of 30km (98430ft.)) which has a long
station-to-station distance and total distance, and is resistant to noises, or the
coaxial bus system (maximum total extension of 500m (1640.5ft.)) which can
easy be wired.
(h) It is not necessary to specify a station to be connected in the future as a
reserved station and to connect stations in order of the station Nos. in the
network. When a station becomes faulty, a loop-back is performed in the
optical loop system. The functions above facilitate the network connection.