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[W-MBUS] What kind of encryption is supported in the Wireless M-Bus modules?

Currently the transport layer mode 5 (AES-128-CBC) and extended link layer encryption mode 1 (AES-128-CTR) is supported. New encryption modes are added as the Wireless M-Bus standard develops.

Last Update: August 8, 2017

December 13, 2016 2847 Wireless M-Bus Q&A

Related Knowledge Base Posts -

[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. “
[W-MBUS] “I know by using Zigbee module that even if they use an “”open protocol”” it doesn’t mean you can be fully compatible with other manufacturers (aka ZB home profile, …). Is it still the same with Wireless M-BUS? Is it all about Application layer? “
[W-MBUS] “Sometimes RC1180-MBUS3 stops responding and we found that the configuration registers in module’s flash are damaged (FFs instead of meaningful values). Do you have any suggestions what should we check on our side? Any ideas what could be the reason of the configuration lost? “

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