EnOcean GmbH STM311C Manuel D’Utilisation
USER MANUAL V0.6
© 2010 EnOcean | www.enocean.com
STM 320 / STM 320C / STM 321C User Manual V0.6 | Page 8/15
STM 320 / STM 320C / STM 321C
2
FUNCTIONAL DESCRIPTION
2.1 Block diagram
A change of the reed contact status or pushing the LRN button will wake the transmitter
unit to send a radio telegram immediately (reed contact position, LRN push button status,
unique 32-bit sensor ID, checksum). In addition a redundant retransmission signal is sent
to announce the contact status even in case of no input signal changes. This signal trans-
mitted every 20-30 min, affected at random. The transmit indicator LED flashes briefly at
every radio transmission.
Between the wake-up phases, the device is in sleep mode for minimum power consump-
tion.
2.2 Radio telegram
STM 320 transmits a radio telegram according to EnOcean Equipment Profile
EEP 06-00-01 as defined in the EnOcean Equipment Profiles 2.0 specification.
http://www.enocean-alliance.org/fileadmin/redaktion/enocean_alliance/pdf/EnOcean_Equipment_Profiles_2.0.pdf
Helical antenna
BALUN
Spontaneous
wake-up
wake-up
Power management
Micro
Controller
RF Transmitter
868.3 MHz (STM320)
315.0 MHz (STM320C)
DOLPHIN
EO3000I
16MHz Oscillator
Energy
Storage
Solar Cell
LRN button
Transmit
Indicator
Reed
contact