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3-2 Setting the Routing Tables
3-2-3 Setting the Gateway Counter
Note
More than 3 network layer crossings (8 max.) are allowed with CS/CJ-series Units
with Version 2.0 or later ratings.
However, up to 8 network layer crossings are allowed only when the destination of
the FINS command is a CPU Unit. If the destination of the FINS command is not a
CPU Unit, the maximum number of network layer crossings is 3.
Note
When the maximum number of network layer crossings is set to 3, it is possible to
combine Version 2.0 or later CS/CJ-series Units with other models.
If the maximum number of network layer crossings is set between 4 and 8, only
Version 2.0 or later CS/CJ-series Units can be used in the network. (Models other
than Version 2.0 and later CS/CJ-series Units cannot be included.) If other models
are used, a routing error (end code 0501 to 0504 Hex) may occur in a relay PLC or
the response may not be returned properly to the source node.
Note
The connection between the computer and relay node can be checked with the Check
connection to Relay Node command.
The checking procedure is as follows:
1. Display the PLC Routing Table Window in Main View format and move the cursor
over the relay node's icon, as shown above.
2. Right-click over the icon and select Check connection to Relay Node from the
pop-up menu.
3. The check results will be displayed in a Routing Table Dialog Box, like the one
below.
If you click the Overview Tab, the following display will appear.
This example completes the procedure for creating a directly connected PLC's routing
tables.
3-22
Relay node address: 3
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