When using a USB-Serial converter, you need to make.Only be available, or listed as an option, when it's From the computer's perspective, the adapter is an.It also means that if you swap converters the port number assigned will be different. You can over-ride this with Device Manager. This means that when you unplug the converter, Windows continues to consider its COM port number in use. Windows reads this and uses it to remember which driver and COM port number to use for that device. If your USB-Serial device is "designed for Windows" then it will have a unique serial number.This is not always so: look at the computer's actual COM ports physically available and you may find a lower port number. Windows may list all the lower COM port numbers as in use.Make a note of this number and the other settings listed: you will need to enter them in your data acquisition software. Select your converter and click Properties. If the COM port number is too high, use Device Manager to reassign the COM port to a lower number. Windmill, for example, accepts COM ports 1 to 24. Number that is higher than your software can handle. You may find that Windows assigns your converter a COM port.(A question mark indicates that there is a problem with the drivers or the connection.) "USB serial port(Com X)", where X is the COM port To find the COM port number open Windows Control Panel and choose first System then Device Manager then Ports. Windows will assign the USB converter a COM port.If you don't have any driver software then check with the manufacturer. Here are some tips on using a USB-to-Serial converter.Ĭonverter into the PC's USB port and install its driver The converters are simple to use but sometimes need careful setting If you haven't any RS232 COM ports on your computer, you can use a USB-to-Serial converter to access data from your instruments. We also offer free software for simpler serial logging applications: ComDebug.
Windmill offers the COMIML universal serial driver, available from our Data Acquisition Catalogue with free technical support for life and a money-back guarantee if not satisfied. Driver software on the computer collects the data and makes it available to applications like Windmill Logger or Microsoft Excel.
Many instruments and devices can send data to aĬomputer over serial RS232, RS485 or Modbus links. Data Acquisition » Serial Communications » RS232 Serial Port Tips on Using USB-to-Serial Converters for Data Acquisition
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