IT WORKS :D.
I tested today on the electronique equipment, and it’s ok all goes good.
I found that I had, since the beginning, problems on my RS232 driver. That, maybe, could explain my previous problems. The fact is these problems doesn’t affect the application when I was simulated the electronique equiment with my PIC. I think the rs232 driver used in the electronique is not the same I used with my PIC and so the compatibility with the driver used on the EMX wasn’t the same to :).
Thanks a lot everybody (and especialy Brett) for all the help I had.