It recently bought a wood cutter with SINUMERIK 810M. The old programs stored in memory from the previous owner's fine to run. But I try to pair it with a PC to transfer new programs and backing up existing files.

When I send data from NC to PC, I get data on the PC, but after a while it times out and error message. Then you can not save the data.

As the baud rate, stop bits and parity seems to be right. But it is the signal from the NC, when the entire file is sent which seems to be missing?

Does anyone recognize the problem?