TCPIP labsphere connection error

When i try to connect to labsphere cs1100 product, there is always error. No matter i turn on their software or turn off.

I have the instrument contrl toolbox.

t = tcpip('localhost',4343);

fopen(t);

Error using clc

Too many input arguments.

Error in icinterface/fopen (line 83)

clc error(message('instrument:fopen:opfailed', errmsg));