Originally Posted by
ChrisVJ
The USB/parallel port adapter I tried is “Ugreen.” The computer says it recognizes the adapter but it won’t show a parallel port for outputs, only USBs. The visual Cadd plotting function doesn’t work without a LPT1 or LPT2 to send to.
I think that is a 'feature' of parallel port emulators in Windows.
You could create a raw printer device under windows like
this, and then assign an LPT port to it as follows:
- Do a "right mouse" click on your printers name
- Choose "Properties" from the popup menu
- Click on the "Ports" tab at the top
- Write down the name of your USB port name
- Click on the "Enable Printer Pooling" checkbox
- Scroll through all of your listed ports and click on "LPT1" port.
- Click on "Apply" and "Ok".
I've used the second part of this in the past, but not the raw printer part. I wouldn't be too hopeful of this working myself, but you never know.
If I was you I'd concentrate on using a usb to serial route. Problems you're likely to have are:
- the usb serial device appears as COM 15 but your software only allows for COM1 to COM4.
- a bad serial cable ( there are so many variants of serial cables out there that the chances of having one that doesn't work is very high.
Does your printer have a 15-pin serial connector, or a 9-pin one?