![]() ![]() I used the Windows HyperTerminal program to test both COM ports. If it does work, and your program truly is apples-for-apples, then I would work on tracing down the problem i described above in (1). Make sure that your converter cable actually works via COM5 in the emulator as the "real" port does on COM1 separate from your program. Use TeraTerm or PuTTy or HyperTerm or whatever terminal emulator you like. If all else fails try a different manufacturer.įirst what i would do is make sure you can talk through the USB-RS232 cable manually. (2) sometimes USB - RS232 converters made by lower-end manufacturers have problems. ![]() Unfortunately my home computer is running Linux so I can't recall where this setting is found. there is a way to set this higher, pretty easy once you find it. (1) the default Windows COM settings is preventing the use of any com ports numbers above a certain default number, typically "COM4". When ive had problems, its been for one of two reasons: Ive gone all the way up to COM16 or maybe higher. ![]() Generally, I've not had problems accessing any of the com ports that are assigned by USB-RS232 converters. Ive done a lot of work with COM ports, both real and virtual. ![]()
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