Omron SYSMAC CS1W-ETN21 Operation Manual page 74

Basic Settings
If CIDR is not enabled and a subnet mask is not set (i.e., the default of 0.0.0.0
is set) or an illegal value is set, one of the following values will be set as the
network mask according to the class of the local IP address.
Class
Class A
Class B
Class C
If classes are normally used, it is recommended to set a subnet mask values
corresponding to the class.
■ Broadcast Settings
Set the method for specifying IP addresses when broadcasting.
Setting
All 1 (4.3BSD)
(Default)
All 0 (4.2BSD)
■ Baud Rate
Set the baud rate.
Setting
Auto (Default)
10Base-T
■ TCP/IP Keep-alive Setting
Set the Liveness-Checking Interval. (This setting is enabled only when
FINS/TCP or TCP/IP socket services are used.)
When the keep-alive function is used with FINS/TCP or TCP/IP socket ser-
vices, the keep-alive communications frame is used to check the status of the
connection with the remote node (either a server or client) if there are no com-
munications during the time interval set here. Up to nine checks are executed
at 75-second intervals. and if there is no response to any of them then the
connection is terminated.
The default setting (0) is for a specified value of 120 minutes for the Liveness-
Checking Interval. When the prescribed value is used as is, it may not be suit-
able for control system applications. Set the checking time as required for the
system. The setting range is 0 to 65,535 minutes.
■ IP Router Table
An IP router table is a table of correspondences for finding IP addresses for
the IP routers that relay target segments when the Unit communicates via IP
routers with nodes on other IP network segments.
130.25.X.X (Network ID)
Node A
Subnet mask
255.0.0.0
255.255.0.0
255.255.255.0
Contents
Broadcast with all ones for Host ID (4.3BSD specifications).
Broadcast with Host ID all zeros (4.2BSD specifications).
Contents
Automatically detects the baud rate between hubs.
Operates with 100Base-TX (full duplex) whenever possible.
Operates with 10Base-T (half duplex).
130.25.36.253 130.26.2.254
IP router
Section 2-8
130.26.X.X (Network ID)
Node B
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