Master Control - Berker

(8 bit values) for easier comprehension. This method of display is called dot notation. Here is an
example of a possible IP address of the panel: 192.168.1.2.
The panel also required a clear IP address for identification and communication in the local network.
Subnet mask:
The Internet address is subdivided into the Net ID and Host ID to distinguish between the individual
networks. The Net ID addresses the network and the Host ID addresses the network subscribers
(e.g. PC or panel). Telephone numbers are structured in a similar way. Here too, a distinction
is made between the dialling code and the actual telephone number. The Net ID shows
whether the recipient, to whom a network connection is to be setup, is in the same individual
network as the sender or not. If this part of the IP address is the same for both the sender and
the recipient, then both communication partners are located in the same network. If it does not
match, then the recipient is located in a different network.
Which part of the IP address belonging to the Net ID and which to the Host ID depends on the
size of the individual network (subnet) and is primarily determined by the subnet mask.
Just like the IP address, the subnet mask is also a 32 bit value, shown in dot notation. The panel
also requires a subnet mask in the IP configuration to detect the relationship to the network
topology.
Standard gateway:
If the subnet mask is viewed in binary, then the section of the Net ID is filled with ones and the
section of the Host ID with zeroes. With each data packet to be sent, the sender compare their
own IP address with that of the recipient. In so doing, the bits of the Host ID beyond the part of
the subnet mask filled with zeroes is hidden. If the evaluated bits of the two IP address are
identical, then the network subscriber to be contacted is in the same subnet. If just one of the
evaluated bits is different, then the selected network subscriber is not located in the same subnet.
In this case, the data packet must be handed over to a standard gateway to be switched into
the target network - for example, the Internet. In many cases, the standard gateway is - and
this occurs extremely often in private networks - a DSL router, which connects the local network
with the Internet.
The panel also requires the IP address of a standard gateway when communication beyond the
borders of the local network is necessary.
DNS-Server:
There are millions of IP addresses on the Internet. Users would have difficulty handling the different
addresses - even in smaller home networks - because the long numbers are either very
difficult to remember or are completely unknown. This is where the DNS (Domain Name System)
helps. Here, allocations of IP addresses and domain names are stored on DNS Servers,
are constantly managed and polled as necessary. The DNS can be seen as the telephone directory
of the Internet.
The panel also allows the user or the installation engineer as an administrator to enter domain
names rather than direct IP addresses at some points (e.g. for e-mail Servers or RSS sources).
For this reason, the panel, just like a web browser, also needs the valid address of a DNS Server,
in order to poll the names there and then resolve the IP address. Therefore, a DNS Server
must also be entered in the IP configuration of the panel.
i Valid IP addresses for DNS Servers are available from the network administrator or the responsible
Internet service provider (ISP). In some cases, mini DNS Servers are already integrated
in the Internet route of the network. However, this depends on the router used. In
such cases, the address of the DNS Server is the same as the address of the standard
gateway.
DHCP:
As described above, to communicate with other network subscribers, the panel needs their IP
address, its own subnet mask and, if necessary, the IP address of an available gateway and of
a DNS Server. These addresses can always be specified during panel commissioning and
entered in the device configuration. For this, the network administrator must hand over the information
to the operator or the installation engineer.
In larger networks, this method soon causes a lot of configuration and management work. For
this reason, amongst others, the use of DHCP (Dynamic Host Control Protocol) is advisable.
Order-No. 7574 00 1X
PC Client software
Configuration data (IP, e-mail, RSS)
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