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MELSOFT
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PPENDICES
APPENDICES
Appendix 1 Concept of the Routing Parameters
The routing function is used by the station of the programmable controller in a multi-
level system to make transient transmission to the station of another network No.
To perform the routing function, the "Routing parameters" must be set to associate the
network No.s and stations acting as bridges.
For communication via the MELSECNET(II), the routing function cannot be used.
(1) The routing parameters must be set to the request source and relay station of the
programmable controller.
(a) The request source must be set to make access to the request target.
(b) The relay station must be set to make access from the request source to the
request target and to make access from the request target to the request source.
(c) The request target needs no setting.
For example, to make transient transmission from 1Ns3 to 3Ns4 in the following
diagram, the routing parameters must be set to the programmable controller 1Ns3
which makes transient transmission, to the programmable controllers 1Ns4 and 2Mp1
which serve as bridges, and to the
programmable controllers 2Ns4 and 3Ns5.
3 14
Routing parameter setting
1Ns3
Network No.1
1N21Mp1
Request
source
1Ns5
1N6
1Ns4 2Mp1
2Ns2
2N3
Network No.2
Network No.3
3Ns2
3Mp1
3Ns4 3N3
Request
target
2Ns4 3Ns5
1 21
3 24
Routing parameter setting areas
Transfer target network No. 1 and 2 need not
be set as they are connected.
Transfer target network No. 2 and 3 need not
be set as they are connected.
Only transfer target network No. 3 must be set.
Relay target
network No.
Relay target
station No.
Transfer target
network No.
Routing parameter setting
Relay target
network No.
Relay target
station No.
Transfer target
network No.
Routing parameter setting
Relay target
network No.
Relay target
station No.
Transfer target
network No.
Mp Control station
N Normal station
Ns Normal station (station that can be control station)
(2) Up to 16 "transfer target network No.s" can be set to the programmable controller.
16 different network No.s allow the own station to be a request source or other
stations to be accessed via the own station.
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