error -1073807339

[jeyanthi]

i using wireless modem to connect with logger to get data..
i use the serial communication  and i able to send the request out for example the command is like tis

?00001*RR\r.. but wen i didnt get the reply from the logger

if i use the hyperterminal i able to get the responce..

this error is occurs wen i request -1073807339

VISA Read in Serial Port Read.vi  why this occurs

and the byte count always returns 0 when requested..

why this occurs?

plz help

[Burban]

This error is due to a timeout.  You should use the VISA Set Timeout VI to increase the timeout value.  This information can be found in KB 3JOF9K6K.

[Dennis_Knutson]

But, the reason the timeoout occurs may be because you are not sending the termination character correctly. You will only send a '\' code if the string control/constant is set for '\' Code Display. Right click on the string control/constant and see if that is checked. You can set the timeout to infinitity and that won't help if you are not sending the correct command.