Hai all,,
I'd like to ask again
Im using my laptop for the connection to PLC
Because Laptop has no serial communication, I purchase a usb to rs232 converter
I was using the usb port for communication, the port comm number is around 17, 18, 19
when i was using TLserver there are no problem, but when i was using sample vb6 program from
http://www.tri-plc.com/applications/SerialComm.zip
i have problem that the combo box "port choice" won't work when the port number is above COM8...
can someone tell me what wrong with the code?
here is the screenshoot
![](http://i456.photobucket.com/albums/qq286/zeus_c_law/328c0f6f.jpg)
because i need the port opened at COM arround 17,18, 19
thanks before
regards
![Grin ;D](https://triplc.com/smf/Smileys/default/grin.gif)