Baud rate mismatch. Fix: Double check baud rates. Try lowering to 4800. Also verify 8N1 (8 data, no parity, 1 stop) is identical on both sides.
In the early days of automated manufacturing, transferring complex programs or backing up machine data (NC/PLC data) was notoriously difficult. If a machine like the SINUMERIK 810D Siemens Winpcin
is a specialized communication software used to transfer data between a PC and Siemens SINUMERIK CNC controllers, such as the 802D, 810D, and 840D Baud rate mismatch
If you get a "COM Port Access Denied" error, check if another program (like a CAM software simulation or a synch program) is holding the port hostage. Also, modern laptops often lack physical COM ports; ensure your USB-to-Serial adapter has the correct drivers installed. Also verify 8N1 (8 data, no parity, 1
: Sending CAM-generated part programs (.mpf or .nc files) from a PC to a CNC machine and receiving edited programs back for storage.