Omron CS1W-SLK11-21 - 06-2004, Manual

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Routing Tables Section 5-2
5-2 Routing Tables
Routing tables are required for data exchange with other networks or when
more than one SYSMAC LINK Unit, Controller Link Unit, or Ethernet Unit is
mounted on the PLC. For data exchange with other networks, set a routing
table on the local node, destination node, and relay node from a host com-
puter or the Support Software. Refer to the Support Software manuals for
details.
!Caution The CPU Bus Units will be reset if the routing tables are transferred to the
CPU Unit from a Programming Device. The reset is required to update the
routing table settings. Confirm that the controlled system will not be adversely
affected before transferring the routing tables.
5-2-1 Routing Table Configuration
The routing tables consist of a local network table and relay network table and
determine the communications path for data exchange between networks.
5-2-2 Local Network Table
If more than one Communications Unit (SYSMAC LINK, Controller Link, or
Ethernet Unit) is mounted on the PLC, a local network table is required. The
local network table has a list of each network and its corresponding Unit.
Two data items are set for each Unit:
Local Network Address:
Network address of the Unit (1 to 127)
CPU Bus Unit Number:
Unit number (0 to 15) of the Communications Unit
5-2-3 Relay Network Tables
To exchange data between two networks, you must set up relay network
tables that specify the transmission path to remote destinations.
Data transmission paths include the following settings.
CX-Net Settings Window
Example Create the routing tables using CX-Net in CX-Programmer as shown below.
Here, the procedure for CX-Net in CX-Programmer Ver. 1.2 (Service Pack 1)
is given as an example.
• Local Network Table
Local network address is 10 and the SYSMAC LINK Unit’s unit number is
5.
• Relay Network Table
Destination network address is 20, relay network address is 10, and relay
node address is four.
Routing tables
Local network table
Relay network table
Item Range Contents
Destination net-
work 1 to 127 The network address of the desig-
nated node.
Relay network 1 to 127 The address of the network through
which the destination network can be
reached.
Relay node 1 to 62 for SYSMAC LINK
1 to 32 for Controller Link
1 to 126 for Ethernet The address of the node on the relay
network through which the destina-
tion network can be reached.