Error when trying to open a new connection with tcpip

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Hello everyone, I am trying to open a new connection in MATLAB using the tcpip command:
connection = tcpip('localhost', 5666);
However, I keep getting this error message: ??? Undefined function or method 'echotcpip' for input arguments of type 'char'.
I am not sure where to go from here. If you could give me any advice that would be great. Thanks, Ellie (useless at MATLAB)
  3 Comments
Nitin Rawat
Nitin Rawat on 24 May 2017
Geoff Haynes - I'm facing the same problem and while using the command " which -all echotcpip", i got this error "'echotcpip' not found."
Vinod
Vinod on 25 May 2017
'echotcpip' is part of Instrument Control Toolbox. execute the 'ver' command to find out what Toolboxes you have installed and have a license for.

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Answers (1)

Rahul Goel
Rahul Goel on 20 Jul 2015
Hi Eleanor,
I understand that you are getting an error while opening a new connection using ‘tcpip’.
In addition to Geoff’s suggestion, you can also try turning the tcp echo server “on” before creating a connection object. This can be done as:
>> echotcpip('on', 56666)
where “56666” is the port number you want the tcp echo server to run on. Then an object to the connection can be created:
>> conn = tcpip('localhost', 56666)
provided that the function “echotcpip” is not shadowed in the MATLAB path as suggested by Geoff.
Hope this helps.

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