18 Technical details for the RS485
interface of Bluetooth wallreader
After a successful access at a Bluetooth wall reader, an APDU with the event log entry of the
successful access is sent as payload from the wall reader via the RS485 interface.
In addition to other parameters, the event log entry contains the 5-byte lockingSystemId of
the medium (access medium or smartphone) that successfully unlocked the wall reader.
This lockingSystemId (int64) can then be queried via the AirKey Cloud Interface. Example:
GET/v1/media?lockingSystemId=000102030405
This information can be used to implement various use cases:
• Display the name of the person who has unlocked the wall reader.
• Reading additional parameters, e.g. from the "comment" field of this medium and
using this information by third party systems.
• Elevator control: Enter e.g. a minimal JSON string into the comment field of your
medium to store a specific floor for an access medium or smartphone and use this
information for elevator control.
• Elevator control: Enter e.g. a minimal JSON string into the comment field of an access
medium or smartphone to store a specific floor for this medium and use this informa-
tion for elevator control.
18.1 Activate RS485 interface for Bluetooth wall readers
In order to forward the event log entry via the RS485 interface in the case of a successful
access, the corresponding setting must be set on the Bluetooth wall reader in the AirKey
Online Administration.
> Select the Wall reader tile on the Home page.
> Alternatively, select access control system → Locking components in the main
menu.
> Click on the Bluetooth wall reader for which you want to activate the function.
> Switch to the Settings tab.
> Activate the RS485 interface checkbox at the very bottom.
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