Omron SYSMAC 3G8F7-CLK12-EV1, Руководство по эксплуатации

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Routing Tables Section 7-2
• Computer Bridges and Gateways: FinsGateway automatically imple-
ments the bridge or gateway functionality. It does not need to be pro-
grammed by the user. The FinsGateway, however, does not connect all
networks. Refer to the FinsGateway online help for details.
• Communications across bridges or gateways can include up to three net-
works, including the local network (data generating network).
Although 2,012 bytes of data (including the header) can be sent and received
with a Controller Link, the maximum amount of data is limited by any network
the data passes through, i.e., the network with the smallest capacity will deter-
mine the limit.
If, for example, data passes through a SYSMAC LINK network as shown in
the figure, the amount of data sent and received from the Controller Link is
limited to 552 bytes (including the header) because the SYSMAC LINK Net-
work can only handle that many bytes.
See the manual for the network you are using in order to determine the maxi-
mum amount of data for each network.
7-2 Routing Tables
Routing tables that define the communications path from the Controller Link
Unit on the local PC to the network connected to the destination PC must be
created in order to send and receive data across networks.
Creating Routing Tables
Routing tables consists of a local network table and a relay network table.
Local Network Table The local network table lists the unit numbers and corresponding network
addresses for the Controller Link Unit and Support Board unit numbers. With
the Support Board, only one entry can be set in the table.
Bridge
Gateway
Data
Data
Data and communications
protocol gateway
PC
Controller Link
Controller Link
PC
Controller Link
SYSMAC N ET
Computer
FinsGateway
Controller Link
Support Board
Controller Link Controller Link
Controller Link
Support Board
N etwork 1 (local network) N etwork 2 N etwork 3