Dataframe on UART is identical between S mode and T mode.
Last Update: August 8, 2017
June 15, 2017 2202 Wireless M-Bus Q&A
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- [W-MBUS] Which module should I use for Brazil and other countries outside Europe using 433 MHz?
- [W-MBUS] As far as the data format is concerned, the “”MBUS-CCT user manual”” states: “”To send ASCII characters, type them in and hit the enter key or click on the send once button””. In case bytes have to be sent, we know that te first byte should be the Length byte. We tried to transmit the same bytes sequence shown as an example in the user manual (pag. 4): ‘5 0x33 0x25 6 78 7’. In both cases (ASCII and bytes transmission) nothing is transmitted across the link (or at least nothing appears at the receiver side). Comments?
- [W-MBUS] “The WM-Bus module on my PoC unit sometimes stops sending serial messages (eg overnight). The Radiocrafts Demo PCB continues to receive OK, so it’s not the radio signal stopping, it’s the module serial output stopping. It starts again after turning Vdd off and on. This could be radio interference on the PCB wires perhaps, eg insufficient filtering on the serial data wires or Vdd wire, so I will improve that on the PCBA. “