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,
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