Close DSLaunch and Directsoft (both), (and LookoutDirect and DSData, should you have them open,) and re-open so they can read the changed INI file.ĬOM 4 should now be available for creating a link.ĭo this accordingly for COM 3 through 8. Any of these files would be located in the main C:/WINDOWS or C:/WINNT directory.)ĭouble click on that, and when it opens in a text editor, drag the scroll bar about half-way down to the section where you'll see:Ĭhange the setting to equal 1 for any port you want to use, (COM4ENABLE, in this case,) and save the file. (In older versions, DS400.INI or DS300.INI may be used. In DSLaunch, under Utilities, the last selection is DS500.INI. (You can check this assignment in Device Manager under Ports, COM and LPT.) Once that is done, the adapter should be seen with an assigned COM port in Windows Device Manager.Ģ) Assuming that the driver assigned the USB-to-serial converter a PC COM port number other than 1 or 2, as an example, we'll assume that most of the time COM4 is assigned. Why can't I connect to the PLC with the USB-to-serial adapter? Answerġ) A USB-to-serial adapter generally requires a driver to be installed, either available from disk or download.
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