hmm.. Did not realise you were trying to write a program like GX, the non protocol method will not work as downloading a program will destroy the RS instruction.
I don't know what the programming protocol is & I doubt that Mitsubishi would release it, after all they want to sell their own programming software, also it could be dangerous downloading something that will change the program while it is controlling some piece of equipment, they have invested a great deal of time & money, the effort of writing something like that probably is not worth it, & to sell it as a working program would be even more difficult
Anyway best of luck.
I don't know what the programming protocol is & I doubt that Mitsubishi would release it, after all they want to sell their own programming software, also it could be dangerous downloading something that will change the program while it is controlling some piece of equipment, they have invested a great deal of time & money, the effort of writing something like that probably is not worth it, & to sell it as a working program would be even more difficult
Anyway best of luck.