YOKOGAWA Vnet/IP, Technical Information

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3. Vnet/IP Network Configuration without using Information Network
3-3
TI 30A10A05-01E
3.2 IP Address Setting
Set the IP addresses of the devices that are connected to Vnet/IP. This section describes
the IP addresses that are used in Vnet/IP.
Vnet/IP uses IPv4 addresses that consist of a network address and host address, as
shown in the following figure.
030201E.ai
8 bits
192
11000000 10101000 00000001 00000001
168 1 1
8 bits 8 bits 8 bits
Network address part
Host
Address
part
32 bits
IP address
Subnet mask
255 255 255 0
11111111 11111111 11111111 00000000
n
Network address
Vnet/IP uses a network address that is determined by the domain number and bus line, as shown
in the following table. A domain number is set for each Vnet/IP station by using a DIP switch.
Domain numbers must not be duplicated within their respective Vnet/IP and V net domains.
Table Network address
Bus line IP address Subnet mask
Bus 1 192.168.<domain number>.0 255.255.255.0
Bus 2 192.168.128+<domain number>.0 255.255.255.0
n
Host address for control communications
In each Vnet/IP station, the host address for control communications is automatically set to the
station number 2 to 129. A station number is set for each Vnet/IP station by using a DIP switch. A
host address is assigned to each CPU module in duplexed FCS.
The default host address for SNTP server is set to 254. You can change this setting from the
domain properties. (*1) (*2)
*1: You cannot use host address 1 because it is reserved.
*2: You cannot change host addresses in CENTUM CS 3000 R3.07 or earlier.
Aug.19,2011-00