USER MANUAL V1.0
© 2016 EnOcean | www.enocean.com
F-710-017, V1.0
PTM 535Z User Manual | v1.0 | March 2016 | Page 21/38
PTM 535Z – 2.4 GHZ PUSHBUTTON TRANSMITTER MODULE
Figure 5 below summarizes the IEEE 802.15.4 frame structure.
Figure 5: IEEE 802.15.4 Frame Structure
The content of these fields is described in more detail below.
3.1
PHY Header
The IEEE 802.15.4 PHY header consists of the following fields:
Preamble
Start of Frame
Length of Frame fields
The content of the Preamble and Start of Frame fields is fixed for all telegram types sup-
ported by PTM 535Z as follows:
Preamble = 0x00000000
Start of Frame = 0xA7
The content of the Length field differs depending on the telegram type as follows:
Secure commissioning telegram
Length= 42 bytes (0x2A)
Secure data telegram
Length = 24 bytes (0x18)
Standard commissioning telegram
Length = 17 bytes (0x11)
Standard data telegram
Length = 15 bytes (0x0F)