Prash08ec

Hi all, I want to send a string of data to serial port. Below is the code. Sdata contains the string. for example "<LT-ON-50>". <?php exec("mode com3: BAUD=600 PARITY=n DATA=8 STOP=1 to=off dtr=off rts=off"); if (isset($_GET['action'])) { $SData = $_GET['action']; $fp = fopen("com3","w"); fwrite($fp,$SData); fclose($fp); } ?> unfortunately, it will send only one character i.e '<'. the remaining characters will be lost. What could be wrong in the code. Any help can be greatly appreciated. Thanks,