File : CS-SUP-MUTI-WTHERMAPP-E01.sxw
4 DATA EXCHANGE PRINCIPLE WITH A WAVETHERM MODULE
The WaveTherm
module uses the
WAVENIS
protocol.
The choice of mode used is initiated by the read element which uses a different set of commands (see
WaveCard document) when sending commands to the WaveCard.
The following chart indicates the read modes possible as well as their typical applications.
Read mode
Description
Recommendations
Peer-to-peer
Individual reading with re-transmission management
in case of no reply
Standard use
Polling
This mode enables successive polling of several
modules in a single operation .
The principle consists of waking up several modules
with the 1
st
radio transmission.
To be used when module reading time is
an important factor.
Re-transmission not possible.
Broadcast and multicast (*)
This mode enables use of a single frame to address
all radio modules within reception range.
The multicast mode may only address one group of
modules.
This mode enables reading of modules
without knowing their radio address.
Type of use: detection of radio modules
within range of the emitter module
(installation phases).
➢
Additional functions:
Additional
functions
Compatibility
Description
Recommendations
Repeater
Only used in point-
to-point mode.
This function enables use of a radio module to relay
a frame which was not initially intended for this
module.
This is a default function of the WaveTherm module,
i.e. it may be read via several repeaters but may
also act as a repeater itself when reading another
unit.
This function is used when the caller
module and the target WaveTherm
module are outside radio range.
The maximum number of repeaters is
limited to 3.
Attention: collection of data in multi-frame mode (advanced datalogging) is not possible in
repeater mode.
WaveTherm modules – application handbook
page 12 of 65
