data in serial port dont update

[MOD85]

Hi everybody

Im trying to read values through the serial port. The problem is that when i send another value to write, value i get in the parameter mask read serial, is the same i write in the beggining.

For Example:

I first wirte "PAR0100000", but when i change it to "PAR0211111" the value i get in the parameter mask is PAR01 then the value that is write in the PAR01 string indicator is "00000" and it is supose that the case chages to PAR02, then the value that must be write in the PAR02 string indicator is "11111"

anyone knows what is happening?

 i´m attaching the VI

[smercurio_fc]

Your description is difficult to follow, but it sounds like whatever instrument you're talking to is simply echoing back the commands you are sending before sending you a response. Have you tried to communicate with the instrument using a terminal program, such as HyperTerminal on Windows, to see if this is the case?