USER MANUAL
PTM 216B – BLUETOOTH
®
PUSHBUTTON TRANSMITTER MODULE
© 2022 EnOcean | www.enocean.com
F-710-017, V1.0
PTM 216B User Manual | v1.0 | February 2022 | Page 12/86
Default radio transmission sequence
PTM 216B transmits telegrams in its standard configuration by using so-called Advertising
Events.
An advertising event is defined as the transmission of the same radio telegram on all se-
lected radio channels (by default this would be on BLE Channel 37, 38 and 39) one after
another with minimum delay in between.
For reliability reasons, PTM 216B will send several (minimum two, maximum three) adver-
tising events for each button input. The resulting transmission sequence is shown in Figure
5 below.
The default interval between the advertising events is 20 ms. Starting with product version
DC-06 it is possible to reduce this interval to 10 ms via the NFC configuration interface. See
chapter 6.7.9 for details.
Figure 5 – Default radio transmission sequence
User-defined radio transmission sequences
In certain situations, it might be desirable to transmit radio telegrams on channels other
than the three advertising channels.
PTM 216B therefore allows to select the radio channels to be used for the transmission of
data telegrams and commissioning telegrams. The following transmission modes are sup-
ported:
Both commissioning telegrams and data telegrams are transmitted on the advertis-
ing channels as three advertising events. This is the default configuration and de-
scribed in chapter 3.2 above.
Commissioning telegrams are transmitted on the advertising channels as three ad-
vertising events while data telegrams are transmitted in a user-defined sequence as
described below.
Both commissioning and data telegrams are transmitted in a user-defined sequence
as described below.
The selection of the transmission mode is done using the
VARIANT
register of the NFC con-
figuration interface as described in chapter 6.7.9.
CH 37
CH 38
CH 39
INTERVAL
(20ms or 10ms)
INTERVAL
(20ms or 10ms)
CH 37
CH 38
CH 39
CH 37
CH 38
CH 39