You cannot create qnx target using serial port because we can only do a limited interface though it.
You can open serial terminal, which allows file transfer OR you can do debugging over serial.

> Hi,
> 
> I got my target running, I get pdebug running, but now I need to connect to 
> the target through Momentics. I can't seem to create a target that uses a 
> serial port (/dev/ttyS1). New target only gives me the option for networked 
> targets. Am I doing anything wrong or is debugging through the serial port not
>  supported on Momentics 6.5.0SP1?
> 
> Thanks,
>   Sebastian