User's Manual

USER MANUAL PREVIEW

PTM 535BZ – BLUETOOTH AND ZIGBEE GREEN POWER PUSHBUTTON TRANSMITTER

4.4.2 Commissioning telegram

Transmission of a commissioning telegram can be selected either by pressing the LRN button

or via the NFC interface. The commissioning telegram payload is shown in Figure 28 below.

Figure 28 – ZGP payload structure for commissioning telegrams

The commissioning telegram contains the following fields that are common to all Device ID:

 ZGP Network Header (6 byte)

The ZGP Network Header is similar to that of data telegrams; the Sequence Counter

field is omitted in the ZGP Network Header as it is part of the Application Payload

 Command (1 byte)

The ZGP Command field is set to 0xE0 to identify a commissioning telegram

 Device ID (1 byte)

The Device Type is set to the Device ID used by PTM 535BZ.

By default, Device ID 0x07 (Generic Eight Button Switch) is used and therefore this

field is set to 0x07. If an alternative Device ID from the list of supported Device ID in

Table 6 is selected by the user then this field will be set accordingly.

 Options (1 byte)

The Option field provides information about the structure of the commissioning tele-

gram. It is set to 0x85 if Application Info is present (default) and to 0x81 if Application

Info is not present (optional setting via NFC).

 Extended Options (1 byte)

The Extended Option field provides information about the security model. It is always

set to 0xF2.

 Encrypted Security Key (16 byte)

The Encrypted Security Key field contains an encrypted representation of the 16 byte

security key used by PTM 535BZ to authenticate its data telegrams.

 Key Hash (4 byte)

The Key Hash can be used to verify if the security key was correctly decrypted

 Sequence Counter (4 byte)

The Sequence Counter is a continuously incrementing counter used for security pro-

cessing. It is initialized to 0 at the time of production and incremented for each tele-

gram (data telegram or commissioning telegram) sent.

Size and format of the Application Information depends on the selected DEVICE ID as de-

scribed below.