I'm looking for documentation for the file format for a OSP700L controller. My rs232 param's are set correctly as I can punch programs out but can't read. Through CN0: it gets a 5240 alarm and reading a floppy I get 5000 #7 alarm. I have tried to send an uploaded file back and it still fails with it's own file format.

What is the string that it needs to have at the top of the file to receive a program including the Xon character.

$O1590ht.min% is the format sent from the machine.