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
5.3.3 - Difference between selective, and not-selective Polling mode
Generally, the use of the polling mode (selective, or not-selective) requires the configuration of a table
containing the addresses of the modules to be interrogated (POLLING_ROUTE).
When using the selective polling mode, it is necessary to configure on the transmitter side, the group number
of modules to be interrogated.
In this way, when sending a request in selective polling mode, only the modules included in the table, with the
same group number as configured in the transmitter, will be interrogated.
Contrary to the not-selective polling mode, where all the modules included in the list will be interrogated.
➢ Principle of the not-selective 'polling' mode
When using a not-selective polling, all the modules within radio range are synchronized on the transmitter
(short WakeUp, every POLLING_TIME), but only the interrogated modules respond.
After sending the response, the interrogated modules are re-initialized with their default Wake-Up
period.
The not-interrogated modules are re-initialized with their default WakeUp period, when the
transmitter stops its interrogation in Polling mode.
The procedure to initiate a request in not-selective polling mode, is as follows:
Configure POLLING_ROUTE table, with all the addresses of modules to be interrogated
Launch a request of internal parameter modification
Launch a request in 'Polling' mode
WCAMODHEL Handbook page 55 of 74