command prompt mode com

[stevesteve]

Why am I unable to set the serial com port settings (baud etc) via the command prompt when using a NI USB RS232 serial device?

The command prompt accepts the settings but does not change them.

I am using Windows 7 32 bit.

[crossrulz]

Serial settings are typically only valid during a given session.  So when the command prompt is closed, the settings are reset.  What is it exactly that you are trying to do?

[stevesteve]

I never actually closed the command prompt. The command prompt accepts the command but does not actually change the value from say 8 bit to 7 bit.

e.g: mode com5:9600,o,7,1

is accepted as a valid command but does not actually change the bits to 7; this can be varified by typing mode com5:

The command prompt mode com commands work for other USB to serial devices but not the NI ones; why is this?