3-8SectionCreating Routing Tables
33
Use the following procedure to create the I/O table.
Initial screen
Password
or
(Save or clear the CPU Bus Unit System Setup.)
SHIFT
WRITE
CHG
CH
:DM
000000 I/O TBL ?
000000 I/O TBL
WRIT ????
000000CPU BU ST?
0:CLR 1:KEEP
000000 I/O TBL
WRIT OK
3-8 Creating Routing Tables
When the FINS communications service is used, routing tables must be created
in advance. Routing tables are required in the following circumstances.
• When the FINS communications service is used on an Ethernet network (in-
cluding when communications are only carried out between FA networks via
an Ethernet network).
• When there are multiple Communications Units mounted to the PC, and sock-
et services are requested by executing the CMND(490) instruction.
If neither of these circumstances apply, then a routing table is not required. In
that case, proceed to 3-9 System Setup.
The routing table is required not only for nodes communicating via the FINS
communications service but for all relay nodes on the network.
3-8-1 Routing Table Overview
The routing tables describe the transmission path for FINS messages when the
FINS communications are used. It consists of two tables: A local network table
and a relay network table.
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