For Reference, when the BeCM is in the alarmed state, it does not reply correctly to any diagnostic request for information, but instead replies to every diagnostic request with a default value.
It would have been easier if it simply did not reply at all, but it seems that the designers of the BeCM had other ideas.
Origionally the Nanocom was not set to detect this and interpreted the replys as valid data, resulting in incorrect settings as detailed in the User Guide for the BeCM, however we have updated it in later firmware to detect these incorrect replies and so come up with a communication failure message, which is an improvement that has not yet migrated to the user guide and this oversight will be addressed shortly.
As per the content of this thread, The BeCM can be taken out of the alarmed state by unlocking with a sychronised Key Fob, unlocking with a Key or otherwise convincing it that this has occurred in the event of failure of the Micro switches in the door lock.
Noting that if Key Fob syncronisation has been lost and the BeCM is in the alarmed state, having a failed Micro switch in the door lock prevents both re syncing the Key Fob and taking the BeCM out of its alarmed state.