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Labview TCP listening port on control PC is closed by third party dll

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Dear All,

I am facing a issue with TCP port on LV 2011. In my Main application, i have multiple TCP connection with multiple instruments.For one of the instruments(X), i am suing a its X instrument dll using CALL library function, to establish a tcp connection with instrument. After execution of task i close the connection to this instrument(X), using a shutdown.dll provided. But after few runs of task, shutdown.dll closes all listening ports of Labview, including the default labview tcp listening port. Unfortunately

 

Consequence is, After closing of all TCP connections, no connection to other TCP based instruments is possible.

 

Only solution is to close complete Labview and restart from the begining. Form TCPIP View software i monitored the behaviour of TCP connections. After using all Labview based TCP are not presnet. Hence onyl way was to close complete Labiew and restart over again.

 

i really need help and your suggestions, how i can avoid this perticular situation.

Thanks in advance


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