Sices D-PRO, Technical Manual

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D-PRO Protection relay Technical Manual 25
The controller also supports the DNS protocol (Domain Name System). The DNS system is used
for the conversion of the names of the network nodes in IP addresses and
vice versa.
The
controller uses this function to convert the name of the SI.MO.NE server in an IP address, but
also to register in the network with a name. The name must be configured by P.0456 and it must
be univocal in the network. In order to use the DNS system, it is required:
 If you don’t use a DHCP server (see above), you need to set the IP address of the DNS
server in P.0510 (it is possible to set the address of a secondary DNS server in P.0511).

If you use a DHCP server (see above), the IP address of the DNS server is acquired by
the controller directly by the DHCP server.
If the DNS server can be reached on the network, the controller registers its name (P.0456) on
the network and from that moment on it will be reached through Modbus-TCP protocol on both
the IP address and the name configured on the port P.0503.
The parameters P.0508 and P.0509 allow to set the IP address of the NTP server port (Network
Time Protocol) to be used to connect to a NTP server in order to maintain the internal calendar
synchronized and updated with the date and the time of the related time zone (that is the UTC).
By setting one or both parameters to zero, the function will be disabled.
4.8
For the connections described below, use a type of cable suitable for the CAN-BUS
4.8.1
The CAN-BUS interface is used exclusively to connect to the DST4602 controller by means of
the JO connector and to send it the measurements and the status of the protections.
The CAN-BUS interface is not galvanically insulated.
For further details on the characteristics, the use and the configuration of the parameters
related to the CAN-BUS communication, refer to document [4].
Connections:

Connect the terminal JN-5 to the terminal CAN_H.

Connect the terminal JN-6 to the terminal CAN_L.

Connect the shield of the shielded cable to the protective earth or signal on both sides
(make sure that interior, panel and the engine frame are kept at the same potential).
The CAN-BUS connection needs a 120Ohm termination resistor on both ends of the cable.
Normally, the control units of the engine have the termination resistor built-in (if not, connect
the resistor directly on the CAN_H and CAN_L terminals of the control unit).
The terminal resistor is included in our controller; you can insert it by jumper JN-4 with JN-5.