Publication 1785-UM012D-EN-P - July 2005
Communicating with Devices on an Ethernet Network 11-11
Using Subnet Masks and Gateways
If your network is divided into subnetworks that use gateways or routers, you
must indicate the following information when configuring channel 2:
• subnet mask
• gateway address
A subnet mask is a filter that a node applies to IP addresses to determine if an
address is on the local subnet or on another subnet. If an address is located on
another subnetwork, messages are routed through a local gateway to be
transferred to the destination subnetwork.
If your network is not divided into subnets, then leave the subnet mask field at
the default.
If You are Then See Page
manually configuring channel 2
and have a network with subnets
be sure the BOOTP enable field is set to No
use your programming software to enter
the subnet mask and gateway address; see
.
11-12
using BOOTP to configure
channel 2 and have a network
with subnets
be sure BOOTP is enabled
configure the BOOTPTAB file to include the
subnet mask(s) and gateway address(es)
11-13
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