Why does the PCD no longer run due to "BNt FAIL AI00006"?

FAQ #101712

 

Symptom
In case the "PCD input reference" is used in the BACnet configuration and a persisten value is written in runtime over BACnet (with BACnet firmware 1.16.41), the PCD might no longer be able to read the configuration on next power up. As result the PCD remains in HALT and writes e.g. "BNt FAIL AI00006" into the history.

Reason
When writing a persistent value to BACnet and if the "PCD input reference" is used, the configuration stored in the flash memory is destroyed with firmware version previous to 1.16.59 (e.g. 1.16.41).

Solution
In case you use the "PCD input reference" and in case your BACnet configuration contains over 100 inputs (e.g. 60AI and 50 BI) please update the BACnet and PCD firmware to BACnet FW 1.16.59 and PCD FW 1.16.57 or later. This firmware can be downloaded from the support site.

Remark
Please note that the PCD only writes the error message into the history, but PG5 shows a message saying "Everyting is OK".