USER MANUAL V1.2
© 2014 EnOcean | www.enocean.com
TCM 310 / TCM 310C / TCM 310U User Manual | v1.2 | July 2014 | Page 10/28
TCM 310 / TCM 310C / TCM 310U
3.7
Built-in Repeater
TCM 310x provides the option to activate a one or two-level repeater for EnOcean radio
telegrams.
1-level repeater: If a received telegram is a valid and original (not yet repeated), the tele-
gram is repeated after a random delay. This delay will be chosen such that the maximum
TX maturity time (as standardized in ISO 14543-3-10) of 40ms will not be exceeded.
2-level repeater: If a received telegram is valid and original or repeated once, the telegram
is repeated after a random delay. This delay will be chosen such that the maximum TX ma-
turity time (as standardized in ISO 14543-3-10) of 40ms will not be exceeded.
Repeated telegrams are marked as “repeated” by an increased repeater counter. Configura-
tion of the repeater functionality is done via serial interface commands.
For detailed recommendations regarding the usage of repeaters please refer to our applica-
tion note
EnOcean Wireless Systems - Installation Notes (PDF), 09/2010
.
TCM310x also provides selective repeating. It is possible to add filters and these will be
applied during repeating. Selective repeating can be done based on:
Sender ID
Destination ID
RORG
dBm value
It is possible to define white lists or black lists for selective repeating and for filtering of
received radio telegrams passed via ESP3 independently.
All configuration values set via ESP3 commands are held in RAM and will therefore
be lost after RESET or after a deep sleep phase. Only Smart Ack mailboxes are
stored in FLASH and are available also after RESET or a deep sleep phase.
After sending a CO_WR_RESET command, the following CO_READY event indi-
cates wake up reason 06 meaning ”A memory request from the CPU core does not
correspond to any valid memory location.” This is caused by the real reset cause
used when CO_WR_RESET will be performed. It is not a SW/HW malfunction.
When using repeaters, care must be taken to ensure that regulatory transmitter
duty cycle limits (if applicable) are not exceeded.
2-level repeating function should only be activated after careful study of the radio
conditions! Otherwise the system function can be compromised by collisions of
telegrams.
