Omron CS1W-ETN21 - Manual (Page 73)

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Basic Settings Section 2-9
Example: Using the CX-Programmer to Set the IP Address to 10.3.65.1
When an IP address is set in the Unit Setup, that value is displayed in the IP
Address Display/Setting Area in the DM Area words allocated for CPU Bus
Units.
When the IP address is set by the CX-Programmer, and the defaults are used
for all other Unit settings, the settings will be as shown below.
■ Subnet Mask
For the subnet mask, all bits corresponding to the bits in the IP address used
as either the net number or the subnet number are set to 1, and the bits corre-
sponding to the host number are set to 0. These settings must be made when
using an address conversion method other than the IP address table method.
If no subnet mask is set, or if an illegal value is set, the following values will be
used depending on the IP address class.
With the default setting (0.0.0.0), a subnet mask corresponding to the IP
address class is used.
■ Broadcast Settings
Set the method for specifying IP addresses when broadcasting.
Item Status
IP address Set by CX-Programmer.
Subnet mask Uses value corresponding to IP address class.
Broadcast settings 4.3BSD specifications
Baud rate Auto
TCP/IP keep-alive 120 minutes
IP router table Not set. (IP routing not supported.)
Class Subnet mask
Class A 255.0.0.0
Class B 255.255.0.0
Class C 255.255.255.0
Setting Contents
All 1 (4.3BSD)
(Default) Broadcast with all ones for Host ID (4.3BSD specifications).
All 0 (4.2BSD) Broadcast with Host ID all zeros (4.2BSD specifications).