User's Manual
Table Of Contents
- 1. INTRODUCTION
- 2. RS232 SERIAL PROTOCOL PRESENTATION
- 3. setting the internal parameters of the wavecard
- 3.1- Configuration of the functional parameters
- 3.2- Configuration of the control parameters
- 3.2.1 - selection of the radio operating channel when FHSS is deselected
- 3.2.2 - Selection of the RF medium physical mode
- 3.2.3 - Selection of the radio board emission power
- 3.2.4 - Activation of the Wavenis RF Asic RSSI threshold autocorrection
- 3.2.5 - Selection of the serial baudrate.
- 3.2.6 - Reading the firmware version of the WaveCard
- 3.2.7 - Reading the RSSI level (Received Signal Strengh Indicator)
- 3.2.8 - TEST Mode
- 4. SERVICE COMMANDS
- 5. COMMUNICATION MODES
- 5.1- 'Frame Exchange’ Mode
- 5.2- 'Message’ Mode
- 5.3- ’Polling’ Mode
- 5.4- ’Broadcast’ mode
- 5.4.1 - Configuration of the parameters relating to the 'Broadcast' mode
- 5.4.2 - 'BroadCast' mode without waiting for a response
- 5.4.3 - 'BroadCast' mode with waiting for responses
- 5.4.4 - Format of the commands – from the request transmitter side
- 5.4.5 - Format of the commands – from the request receiver side
- 5.4.6 - Use of the selective, or not-selective broadcast mode
- 5.5- ’Multi frames' Mode
Document : WCAMODHEL.sxw
➢ Principle of the selective Polling mode
Only the modules which belong to the interrogated group are synchronized on the transmitter. A module will
respond to a selective polling request only on the following conditions :
it belongs to the interrogated group,
its radio address is contained in the list of the interrogated modules (POLLING_ROUTE).
Synchronization allows a faster response of the modules (Since it don't use Long WakeUp) and optimize
consumption.
Attention, when interrogating a WaveTherm module in Polling mode, the reading time of a temperature
can be much longer than the default POLLING_TIME value. In this case, this parameter shall be increased
consequently.
- DALLAS Probe: reading in 800ms by probe
- Probe PT100, PT1000: the reading time depends on the index of precision. (max. 3 seconds)
The procedure to be followed, to initiate a request in selective polling mode, is :
To configure table POLLING_ROUTE, with all the addresses of modules to be interrogated ;
by transmitting a request of modification of internal parameter
To configure the group number of each distant equipments contained in the table
(POLLING_ROUTE) ;
by transmitting a request of modification of internal parameter
To choose the group to interrogate, and transmit the polling request.
When a WaveCard (or WavePort) is the receiver of a selective Polling request, the user must specify to
which group WaveCard belongs. For that, it is necessary to configure parameter
WAVECARD_POLLING_GROUP, with the number of selected group.
Attention not to confuse this parameter with the parameter GROUP_NUMBER which gives the number of
group to be reached, when WaveCard is transmitting a selective Polling request.
WCAMODHEL Handbook page 56 of 74