Have you tried rebooting?
You don't show any code. How are we supposed to diagnose your problem without seeing your code, your input and your output data, and how the output data differs from what needs to be sent instead?
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I've used Perl to retrieve rft (really f****** cold) freezer temperatures and one of the things I needed to do was send hex to the unit through the serial interface. I was able to do this using Perl's 'pack'.
Check out:
http://perldoc.perl.org/functions/pack.html
Maybe that will help.
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ok I guess pack function in perl works for me :)..
@input=(0x04,0x0e,0x04,0x01,0x03,0x0c,0x00);
$ascii = pack("C*", @input);
print "the value is $ascii";
$PortObj->write($ascii)|| die "Can't write to $PortName: $^E\n";;
Thanks,
-USER2829
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