FANUC Robotics America GFK-1541B Manuel D’Utilisation

However, if you configure a routing table for PLCs B and C, their data may be forwarded to other
gateways. If Gateway G1 has been configured as the default gateway, the routing table could have
an entry for Subnet 2.2 via Gateway G2 and Subnet 2.3 via Gateway G3.  If the data is not
destined for either remote Subnet 2.2 or Subnet 2.3, then the data would be routed to Gateway G1,
the default gateway.

To configure a PLC on Subnet 2.1 to be able to communicate with Network 1, Subnet 2.2, and
Subnet 2.3 you need to know the following information.

Address of Gateway (G1) 

172.17.64.3 (Default Gateway)

Subnet Mask for Subnet 2.1:

255.255.192.0

Address of Gateway (G2)

172.17.64.4

Subnet Mask for Subnet 2.2:

255.255.192.0

Subnet ID of Subnet 2.2*:

172.17.128.0

Address of Gateway (G3)

172.17.64.5

Subnet Mask for Subnet 2.3:

255.255.192.0

Subnet ID of Subnet 2.3*:

172.17.192.0

* The subnet ID is derived by ANDing the bits of the subnet mask and an IP address on the
destination subnet.

The IP address, subnet mask, and default gateway IP address are entered in the Ethernet
Interface’s module configuration.

IP Address:  172.17.64.1

Subnet Mask:  255.255.192.0

Default Gateway IP Address:  172.17.64.3

The following routing table entries are entered into the PLC’s Routing tab of the Name Resolution
and Routing Tables

 Rack Operation via the Windows-based PLC programming software (if

supported).

1

172.17.128.0

255.255.192.0

172.17.64.4

1

2

172.17.192.0

255.255.192.0

172.17.64.5

1

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