ABB REF 542plus, Operator'S Manual, Page: 127 / 134

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23. Appendix E: Telnet protocol
Through the Telnet protocol it is possible to access an Ethernet module from a
specific computer connected remotely to the same network. Telnet provides
bidirectional communication, where the destination system (Ethernet module) is
referred to as the Telnet server, while the specific local system (for example, PC) is
the Telnet client. It is possible to connect only one Telnet client to the Telnet server
at a time. The Telnet server appears to the connected Telnet client as a locally
connected terminal.
Configuring the Telnet Terminal
To connect a Telnet client to the Ethernet module as the Telnet server, few
operations are necessary. How to connect a common PC is shown below. Both the
Ethernet module and PC must be connected to the same network. Adjust the IP
parameters of the PC Ethernet port so that it is in the same subnet:
A070410
Fig. 23.-1 Setting the IP properties
In the above figure, the PC Ethernet port is configured to communicate with the
address 192.168.2.203 and with subnet 255.255.255.0. The subnet value must
match the subnet value set in the Ethernet module, while only the first three digits of
the IP address must match with the ones of the Ethernet module, the fourth digit
must be different. After that it is possible to verify a remote connection with a ping
command.
To perform the ping command, select Run in the PC Start menu. Then type the ping
command by specifying the Ethernet board IP address, as illustrated in the following
Fig. 23.-2:
Multifunction Protection and Switchgear Control Unit
Operator's manual
REF 542plus REF 542plus
1MRS755869