Program from Windows 3.1 on XP - loss of communication

Oct 26, 2018
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Hello,

I installed a simple program to operate the spectrophotometer (Shimadzu 1601PC) via RS232, which was created for Windows 3.1 and works well on Windows 95, 98 / Me. After the installation on Windows XP, the program also works, but randomly loses communication - Communication Time Out.

https://obrazki.elektroda.pl/5118385400_1540496972.jpg

The parameters of the RS port are set according to the instructions. I tried to change the parameter "Priority" in the device manager, but only for my program uvpc.exe and some other wowexec.exe is inactive and the column "CPU usage" is empty.

https://obrazki.elektroda.pl/2853986800_1540652434.jpg

https://obrazki.elektroda.pl/6805070800_1540577252.jpg

https://obrazki.elektroda.pl/7712791200_1540652512.jpg

I have a question "why" and whether this parameter has a possible impact on the stability of the RS232 connection?

I checked it on several computers and spectrophotometers.

Can anyone know the solution?

Regards and thank you in advance.
 

karlis.vorslavs11

Prominent
Dec 19, 2017
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I know that this will sound super stupid but I think that this program simply is not compatible with Windows XP. You may want to try Windows 98 or Windows 95, best Windows 3.1
 
@Belox, you're talking about ancient software supporting ancient hardware. Your best bet would be to hire a professional who can see what's wrong, and how to fix it. And you're surely aware that after a year or two, that PC you're running XP on will die, and you'll have even harder task.

I would try installing Win98 into a Virtual Box, assigning the serial port to that VM, and checking again.

And last, but not least: Have you checked with manufacturer whether there are newer versions of the software supporting your tool?
 

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