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April 26th, 2004 14:00

How to Change Baud Rate for COM Port?

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25 Posts

April 26th, 2004 14:00

I am trying to use software to download information from an external device and I'm getting an error message. The help file suggests it could be that the COM port baud rate is not set correctly. How do I do this on Windows XP?

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April 26th, 2004 14:00

The baud rate it set in whichever application you are using to access the port. What is the client software on the PC?

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April 26th, 2004 14:00

The software on the PC is G7ToWin, an application used to transfer information to/from GPS receivers.

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April 26th, 2004 16:00

Thank you mattcowger and ddeerrff, I'll try that.

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April 26th, 2004 16:00

Neat - You'll nee dto set the baud rate from within the application itself - im not familiar with that packge, so I can't tell you exactly. I do know that most NMEA compliant equipment will be using 9600 8N1

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April 26th, 2004 16:00

I installed the app to take a look. It appears that if you select GARMIN, then only port rate available is 9600. Other make/models have the option of different port rates.

Something to try, assuming your Garmin unit does indeed need 9600 8N1...

Open a cmd window: click on Start -> Run, typing in cmd and click OK.

Type in "Mode Com1: Baud=9600 Parity=N Data=8 Stop=1" [enter] (without the quotes). Close the cmd window and try the app.

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July 12th, 2016 10:00

Having a similar problem here.

The device connected to COM1 needs a baud rate of 57600.  The default baud rate of COM1 is 9600.  At the moment, every time I need to use the device I power on the computer and change the baud rate of COM1 to 57600 in Device Manager.

I tried to remedy this by typing the following in cmd:

"Mode Com1: Baud=9600 Parity=N Data=8 Stop=1"

However, after restarting the computer the baud goes back to 9600.  Any helpful hints?

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February 7th, 2019 16:00

Go to the Device manager, find the com port you want to change, click on it to open the properties page, click on the port settings tab and there you are. All the settings are available to you. bps; data bits; parity; stop bits; flow control and advanced where you will find the buffer settings. Good luck

Brian

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October 16th, 2020 14:00

I'm in Windows 10. I don't see a Port tab.

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