I need to use two serial port, connecting the two instruments, and now my program is listed two options box, let the user to select, and then click open. Serial number so much, users often do not know which two are connected to the serial port, so it is not convenient. Is there any way to allow the drop-down box to show only the corresponding serial port

控件 1.ctl
控件 2.ctl
series_port_1.vi

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