Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
Transceiver TIC - Guide utilisateur / User guide version V2.0.0
2.2.5 Reading a label on demand via downlink
The product makes it possible to receive a request frame for reading a specific piece of data (downlink 0x05).
This request makes it possible to configure the product to look for a specific label during the next N rounds of carousels. Once found, the ASCII
value is returned in a dedicated frame (uplink 0x4A)
If after N scan the label has never been detected, a status bit will be raised (bit 4 of the Status byte).
2.2.6 Transmission of a daily Keep Alive frame
FR
In event mode, the product might never send frames of data. Thus, to ensure the proper functioning of it a keep alive frame is transmitted regu-
larly according to the following diagram:
EN
If the product has at least one configured periodic data, there is no transmission of sign-of-life frames.
The settings associated with this mode of operation are:
•
The setting of the period of transmission of the Keep Alive frame (register 300).
The complete list of registers can be found in paragraph 3.4.
E.g.:
Register
Value
encoding
S300
Decimal
2.2.7 Auto-detection of baudrate
The product must allow detection of the baudrate used by the electricity meter.
(1) Starting the product (activation via the magnet)
(2) Waiting for the end of the join procedure
(3) Attempt to read the serial link successively at 1200, 9600, 2400, 4800, and 19200 bauds.
(4) If reading fails, the red LED stays on continuously, and a new attempt is made every 10 seconds.
(5) If correct data is found, baudrate is stored, and LED switches off
Product in standby
Period
reached?
Send frame 0X30
Value
Result
72
The Keep Alive frame is sent every:
72x10=720min i.e. 12h (or twice per
day)
Non
Oui
Page
66
of 98
Publicité
Table des Matières
