[W-MBUS] “What happens with frames, that are received while transmitting another frame? If I understand this correctly the module returns to idle state after the frame is sent to the uart. That means, if a frame is sent, while the module is not in idle mode, it can’t recognize the second frame. Right? “

Your summary is correct. The module can’t receive another packet if it is not in IDLE. If a new packet is transmitting from the meter while the Master is occupied sending last received packet out on UART, the new packet will not be received. Increasing the UART baud rate to max will mimimize the likelihood of this incident.

Last Update: October 9, 2017  

October 9, 2017   1121    Wireless M-Bus Q&A