User's Manual

USER MANUAL 1.34
© 2013 EnOcean | www.enocean.com STM 300 / STM 300C / STM 300U User Manual | Page 19/42
STM 300 / STM 300C / STM 300U
3.9.2 Teach-in telegram
In case a manufacturer code is programmed into the module the module transmits – in-
stead of transmitting a normal telegram – a dedicated teach-in telegram if
 digital input DI_3=0 at wake-up or
 wake-up via WAKE1 pin (LRN input)
With this special teach-in telegram it is possible to identify the manufacturer of a device
and the function and type of a device. There is a list available from the EnOcean Alliance
describing the functionalities of the respective products.
If no manufacturer code is programmed the module does not react to signal
changes on WAKE1 (LRN input)!
ORG = 0x07 (Telegram type “4BS”)
DATA_BYTE0..3 see below
LRN Type = 1
LRN = 0
DI0..DI2: current status of digital inputs
Profile, Type, Manufacturer-ID defined by manufacturer
RE0..2: set to 0
ID_BYTE3 = module identifier (Byte3)
ID_BYTE2 = module identifier (Byte2)
ID_BYTE1 = module identifier (Byte1)
ID_BYTE0 = module identifier (Byte0)
ORG
Data_Byte3
Data_Byte2
Data_Byte1
Data_Byte0
ID
Function
6 Bit
Type
7 Bit
Manufacturer-
ID 11 Bit
LRN Type
1Bit
RE2
1Bit
RE1
1Bit
RE0
1Bit
LRN
1Bit
DI2
1Bit
DI1
1Bit
DI0
1Bit
3.10 Transmit timing
The setup of the transmission timing allows avoiding possible collisions with data packages
of other EnOcean transmitters as well as disturbances from the environment. With each
transmission cycle, 3 identical subtelegrams are transmitted within 40 ms. Transmission of
a subtelegram lasts approximately 1.2 ms. The delay time between the three transmission
bursts is affected at random.
If a new wake-up occurs before all sub-telegrams have been sent, the series of
transmissions is stopped and a new series of telegrams with new valid measure-
ment values is transmitted.