rs-232 to USB converter trouble

[carlos morelia]

Hi, everyone

I have developed an application in labview 6.1 for communicating with an instrument via serial port, using serial compatibility VIs. the software works ok in the development machine which has a rs-232 port, but i can´t make it start in other PCs using USB to RS-232 converters (since they don´t have a serial port, only USB). I simply can´t stablish communications, BUT if I open hyperterminal (just open it, i don´t send any commands or anything else) and then close it again, the application in labview works ok!!! it´s just like hyperterminal "wakes up" my instrument! does anybody has any idea how can hyperterminal do this???

[pincpanter]

Are you using the Serial port init vi? Is there any error code coming out?

Paolo

[carlos morelia]

Yes, i´m using the seral port init.vi; I haven´t checked the error out, since i didn´t have any problems on the develpoment machine, what kind of error could i get?