I tried to do this and it gave the following result;
Putting it to 13 is not changing anything. The "ON" light on the Arduino is red but nothing else is blinking. To test, I changed the values, uploaded the script, ran the connect-serial-port tool and pulled the left Engine Fire pull handle. Master caution is blinking, but not on the Arduino.
SOCAT error, I downloaded and replaced the files and now the error message is not there anymore however it gives "Waiting for 0 seconds, press a key to continue..." and then there is nothing (also not when I press a key :)