SU-114N version 1.3
R&D Department
10
Amplifier, speakers line
and critical path surveillance unit
SU-114N
Figure 4
6. CONFIGURATION OF THE UNIT IP ADDRESS
The dipswitches that enable the IP address of the SU-114N to be manually configured are situated on the
lower part of the unit, protected by the cover. This address identifies the unit in the network and
therefore each unit must have a different IP address.
An IP address is represented by means of a 32-bit binary number. The IP addresses are expressed as
decimal-notation numbers: the 32 bits of the address are divided into four octets (an octet is a group of 8
bits). Each octet is represented by A0 to A7 for the first octet, B0 to B7 for the second octet, C0 to C7 for
the third octet and D0 to D7 for the fourth octet.
Each bit can have the value 0 (dipswitch OFF) or 1 (dipswitch ON). In order to obtain the decimal value of
the octet, the decimal values of each bit that is in the ON position must be added up (from the top down:
1, 2, 4, 8, 16, 32, 64 and 128).
When the IP address of a unit is changed, it is necessary to restart the unit by means of the ON/OFF
switch on the front.
Figure 4 shows an example in which the IP address 192.168.100.128 is configured.
Table II on the next page shows all the Dipswitch combinations from 0 to 255.
