again, the issue is the Win10 side, and it's usually not a simple task, any changes required on the Linux side are probably minor.
@Rusty I'd get something like this https://www.ebay.co.uk/itm/124778510598
Have you tried something like a Raspberry Pi with rs232 adapter between the rs232 device and the router connected with wifi/lan.
And the Win 10 computer connected to the network wifi/lan.
And then connect to the Raspberry pi with VNC viewer from Win10 through the network?
It works for the APC UPS devices.
And you have the terminal as you wish.
Expanded support for RS-232 devices for Win10 and future is not meaningful to expect or wait for. It is stone age technology so it wont be better than today and it isn’t worked activity on now or in the future. Either by Microsoft or the Win computer hardware manufacturers.
All function and hardware for this is available as leftovers from old days as long as the hardware is available.
you should probably reread my post 
I think, you want the ser2net package in openwrt, and then use e.g. https://sourceforge.net/projects/realterm/ on windows to connect the TCP-port on the Openwrt to a virtual COMport on your windows.
You can also use com2tcp.exe --ignore-dsr --baud 57600 \.\COM6 192.168.11.80 11001 as a client.
This document describes the configuration file to edit on your Openwrt, /etc/config/ser2net.
So basically steps are:
RS232Dev ⇔ USB-RS232 ⇔ Ser2Net@Openwrt ⇔ YourNetwork ⇔ com2tcp@Windows.
2 Likes
awesome, then perhaps there's a (cumbersome) solution after all !
Unfortunately I’m stuck having to support some of these devices for years to come, it wasn’t my choice…
This sounds good, I’ll start looking into it and see if I can get it going