Where is communication in windows 7

Why do you want to change the communication port settings? Do you get any error code or error message? I would suggest you to check in Device Manager for the Com port in use and try to change the settings, so that you can use it. Click on the Port Settings tab, and then click the Advanced button. Click OK, and continue past warning about using a used port. Repeat for each false in use port. Repeat and change the port back to original COM1 setting and check if the issue is fixed.

Was this reply helpful? Yes No. Sorry this didn't help. Thanks for your feedback. How satisfied are you with this reply?. If your computer does not have a real serial port on it, then COM1 probably is that device you're trying to use.

Either way you slice it, however, this is a problem with the software for the device not being configured correctly. You may also need to configure the COM with terminal emulation software with appropriate settings which the connected devices both use for the communication e. Additionally, you may want to look over COM hardware interface for another basic starting point. This IC has seven internal 8-bit registers which hold information and configuration data about which data is to be sent or was received, the baud rate, interrupt configuration and more.

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What are you talking to with the serial port or trying to do otherwise from the PC exactly when you say "Attempting to use COM1 for another purpose " and "so that I can use COM1 for what I need to use it for"? Add a comment. Active Oldest Votes. Improve this answer. This device has another serial cable that heads to the PC where it is connected with a null modem to the PC's serial port. Now the good stuff: When the clinician scans a patient's lens on the Lensometer the data is transmitted through to the Autorefractor AND to the PC at the same time and is automatically imported into the patient's chart when the user presses the "print" button on the Lensometer.

Over the past week the data is not being transmitted through to the charting software. The software states that it failed to connect to the COM port. I referenced another set of these machines at another site for settings and changed the COM port in device manager to what was at the other, working, site COM port 4. I also adjusted this in the software to reflect the change. This worked for 24 hours, and now there is no connectivity again.

I have tested several more ports today but there is no connectivity. The software was not changed and none of the clinicians have adjusted anything. My guess is that it is using the logical ports as I haven't seen anything in decades that targets the actual hardware resources, but who knows.

Using a Serial-to-USB adaptor tends to cause this type of issue. So; the specific USB port being used is critical. With your equipment connected, you should see two active COM ports.

Mark this down as the built-in Serial Port. If you still don't see a second COM port after the scan is completed, the adaptor is faulty and will need to be replaced. If you did see a second COM port displayed in Device Manger, you now need to change your software to look for the adaptor connection on this port. I have tried the USB to serial port adapters for our receipt printers.

They did not work half the time. The part number is