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COM1 PROBLEM

By ayna_san ·
i have a software which is using for connect with electronic board for communicate with the pcb.

the problem is the connector in the PCB board is RS232 9PIN. in my new laptop there is no RS232 port.

So i bought a USB TO SERIAL connector cable and insttaled it's software in my system and tried to connect with the PCB. Always it's COM Port is showing COM4. The software which I use for the PCB is always looking for the COM1. it will work only through COM1.

i connected the USBtoSerial Converter cable on my Laptop and went to the Device Manage and selected the USB to Serial item and changed it's port to COM1 even after that also not get connection to PCB.

could you please help me to get the COM1 for the USBtoSerial Converter as default.

thak you for your help

abdul naser

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Is something else using com1??

by tstreich In reply to COM1 PROBLEM

Go into device manager and look under "Ports (Com & LPT)", then "Communications Port (Com1)". That usually uses Com1. Double click on that, then go over to the Port Settings tab and click on the Advanced button. Under that you should be able to select a different port there. Then go back to your device and set it to Com1. Everything should be peachy in Margaritaville at this point.

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COM1 PROBLEM

by ayna_san In reply to Is something else using c ...

Dear Tstreich

As you explained in your mail I did and reboot the system and after that when run the software in the first screen of the software there is a COM selection option, there I found only COM3 and COM4. I don't find COM1. is there is any conflict or some other device using the COM1 ? Can you help me to find out the problem ?

Thansk + best regards
abdul naser

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COM1 PROBLEM

by ayna_san In reply to Is something else using c ...

in the device manager there is a Modem Device. I checked the port for this one. I changed the port for this to COM2 and run my software, eventhough COM1 dosn't show in the Port List.
awaithing your reply please

best regards
abdul naser

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Did you check??

by tstreich In reply to COM1 PROBLEM

In device manager did you look at the Communications port(COM1) under Ports (Com & LPT)??

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COM1 PROBLEM

by ayna_san In reply to Did you check??

yes i found there COM1. strange thing now after boot, connect the usb cable then go to device manger change the COM1 port to any other free com Aand re-secan for new hardware. after that again go to same port and change to COM1 and rescan for new hardware then it wiil show COM1 as the USB SERIAL Communication and application work perfectly. Now could you find booting time what happend with COM1.

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I'm not exactly sure what you're asking.

by tstreich In reply to COM1 PROBLEM

Are you saying that when windows comes up the Communications Port(COM1) takes com1 as default even after you change it?

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SERIAL on USB Port(COM1) unable to use

by ayna_san In reply to I'm not exactly sure what ...

Switch ON Laptop try to connect this port will not work.
Then go to Device Manager and change this Port to COM4 and Refresh then again go to Device Manager change to COM1 and Refresh then this Port will work.

could you find any solution to run it without change the port number

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Hmmm

by tstreich In reply to SERIAL on USB Port(COM1) ...

Abdul, I'm sorry but I just changed that setting on 2 different computers and they both kept the changes after booting several times. Maybe just change the communications port to whatever available (besides com1 of course) then try shutting down the laptop and restarting without changing the USB port. Then go in and assign com1 to your USB device??

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just a note

by CG IT In reply to COM1 PROBLEM

the USB to serial connector will always show up as com 4. This is because it's an add on [USB addon] and not a built in. Com 1 is set in the system bios and assigned an IRQ by the BIOS. Then reported to the operating system during the O/S boot.

you could try and disable the com port in the BIOS [but then you said your laptop doesn't have one so the BIOS shouldn't report that there is one].

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USB TO SERIAL COM1 PROBLEM

by ayna_san In reply to COM1 PROBLEM

I solved the problem of USB SERIAL TO COM1


I BROUHT A NEW USB SERIAL CONVERTER CABLE WITH IT'S SOFTWARE

FIREST REMOVED THE OLD SOFTWARE AND INSTALLED THE NEW CABLE SOFTWARE
AND CHANGED THE PORT TO COM1 AND REBOOT THE SYSTEM . IT IS WORKING PERFECTLY.


THE PROBLEM WAS SOME OF THE SOFTWARE ARE NOT SUPPORTED XP.

I REMOVED ALL OEM*.* FILES RELATED TO USB FORM C:\WINDOWS\INF

NOW IT IS PERFECT

THANK YOU VERY MUCH FOR COOPERATION

ABDUL NASER

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