COM port are not shown in my application

[Mariano76]

Hello,

there is a reason why com ports are not shown on a Xp Embedded Touch Panel? 

I have to communicate through a serial port in my application but com ports are not shown in Visa Resource Name control ...

I have included all VISA related things in additional installer ...

[smercurio_fc]

What platform do you have XP Embedded installed on? Does the OS recognize the serial ports in the first place? If the OS doesn't recognize them, then VISA won't see them.

[Mariano76]

In Device Manager there are 4 Com ports, but VISA cannot see anything...

i've made a simple VI with a VISA Control just to check if there is any available but nothing... 

[Mariano76]

Ok, i checked functionality of COM ports with a non-National Instruments programs and all it's working. Only Labview apps cannot see them.

On another PC where the Labview app works if i look at installed Programs in NATIONAL INSTRUMENTS section i can see:

NI VISA RUN TIME 5.1.0

NI VISA 4.5 for Labview on Windows Mobile/CE

On the machine where there the problem under National Instruments SW i can see only:

NI system components

but i've added in additional installer section of the app installer all VISA related stuff...

[Mariano76 · Accepted solution]

Ok i've Solved it!

i have copied manually visa runtime installer from National Instruments drivers DVD and installed on touch and now com ports are found!