Interfaces
21
Each instrument must have a unique IP address, as controlled by the
RIR (Regional Internet Registry).
IP address assignment is controlled by the NIC (Network Information
Center) of each country. You have to apply for assignment of an IP
address from your country's NIC.
Besides the IP addresses and global IP addresses controlled by the
NIC, the following addresses are defined as private IP addresses in the
RFC1597.
10. 0.0. 0/8 10. 0.0.0 to 10.255.255.255
172. 16.0.0/12 172. 16.0.0 to 172. 31.255.255
192.168.0.0/16 192.168.0.0 to 192.168.255.255
You can use these private IP addresses freely. However, you cannot
connect to the Internet directly with these addresses.
Select a private IP address when you make a one-to-one connection
between the instrument and a PC using a cross cable or when you build
a closed network using the HUB only. If, however, all the bits of the host
address are 0, the address will be used as a network address showing
the subnetwork. If all the bits of the host address are 1, the address will
be used as a broadcast address showing all the hosts on the subnet-
work. In these cases, the address cannot be used as the IP address of
the instrument.
For example, if the network is 192.168.1.0/24, the address
192.168.1.255 shows all the instruments connected to the subnet of
192.168.1.0. On this subnet, you can use a total of 254 IP addresses
between 192.168.1.1 and 192.168.1.254; the addresses 192.168.1.0
and 192.168.1.255 would be excluded.
With the TCP/IP protocol used by this instrument, connections can be
made separately for every application. These connections will be distin-
guished by port number. The instrument is set to use 8800-8809 as the
default setting.
8802 (The instrument is the server.): controlled by communications com-
mands.
8803 to 8809: reserved
The settings above do not need editing, unless use of some port num-
bers is restricted for security reasons if or some port numbers cannot be
used on the PC. You can edit the left three digits only. The rightmost
digit (0 to 9) is used by or reserved for the instrument.
IP address assignment
Port number