English (GB)
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8.8 Data communication
CU 352 is equipped with a hardware enabling communication
with external units, such as a computer, via an external GENIbus
or Ethernet connection.
Fig. 117
Data communication via external GENIbus and Ethernet connection
8.8.1 Ethernet
Ethernet is the most widely used standard for local networks
(LAN). The standardisation of this technology has created some
of the easiest and cheapest ways of creating communication
between electric units, for instance between computers or
between computers and control units.
The web server of the CU 352 makes it possible to connect a
computer to the CU 352 via an Ethernet connection. The user
interface can thus be exported from the CU 352 to a computer so
that the CU 352 and consequently the system can be monitored
and controlled externally.
In order to use the web server, you must know the IP address of
the CU 352. All network units must have a unique IP address to
communicate with each other. The IP address of the CU 352 from
factory is 192.168.0.102.
Alternatively to the factory-set IP address, it is possible to use a
dynamic assignment of IP address. This is possible by activating
a DHCP (Dynamic Host Configuration Protocol) in the CU 352 or
via the web server. See the example in fig.
.
Fig. 118
Example of setting of Ethernet
Dynamic assignment of an IP address for the CU 352 requires a
DHCP server in the network. The DHCP server assigns a number
of IP addresses to the electric units and makes sure that two units
do not receive the same IP address.
A standard Internet browser is used for connection to the web
server of the CU 352.
If you want to use the factory-set IP address, no changes are
required in the display. Open the Internet browser and enter the
IP address of the CU 352.
If you want to use dynamic assignment, you must enable the
function by selecting "Use DHCP" and clicking [ok]. A check mark
shows that the function has been enabled.
Open the Internet browser and enter the host name of the CU 352
instead of the IP address. The Internet browser will now try to
connect to the CU 352. The host name can be read in the display,
but can only be changed by either a GSC file (configuration file)
or via a web server. See
on page
This is the first display shown when connecting to the CU 352.
Fig. 119
Connection to CU 352
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10
12
Intranet
Internet
External GENIbus connection
Ethernet connection
External
GENIbus module
(option)
Grundfos CIU
communication
interface
Third-party
gateway
Note
Grundfos recommends that you protect the
connection to the CU 352 according to your safety
requirements in consultation with the system
administrator.
Note
A host name is required to use DHCP.
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