Arad Sonata Sprint, User Manual

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Arad Technologies Ltd.
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st.
HaMada, Yokneam Elite , 2069206, Israel
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w w w . a r a d . c o . i l
5
Communication definition
Sonata
SPI
Encoder 2W/3W Reader
2W/3W interface
23/11/2017
Ver. 1.00 Evgeni K.
Sonata - Encoder Interfaces
5.1 Sonata↔ Encoder Communication
5.1.1 Sonata water meter communicate with Encoder module through SPI protocol: 500kHz,
No Data control). Using other settings will produce unpredictable results, and can
easily render the connected Sonata water meter unresponsive.
5.1.2 After Sonata restart current configuration shall be sent to Encoder module with the
first communication request within 1 minute of Sonata operation.
5.1.3
In case of Encoder module doesn’t receive configuration by 3 times, Sonata shall
execute Encoder module Reset through “Reset” pin for 200ms and shall try to send
configuration again.
5.1.4 After configuration request performs success Sonata shall began sending data to
Encoder module.
5.2 Encoder ↔ Sensus Reader (TouchRead) Interface
5.2.1 The interface specification for the TouchRead mode is defined in terms of operation in
a standard circuit.
5.2.2 Encoder module shall communicate with readers through Sensus 2W or 3W protocol.
There are TouchRead Interface timing diagram for Sensus 2W or 3W communication.
AC PWR/CLK
ASK DATA OUT
STOP
BIT
START
BIT
BIT 8
(PARITY)
START
BIT
STOP
BIT
BIT 1
(LSB)
BIT 2 START
BIT
DATA OUT
TPOR
TPSL
TPL
TPH
1
st
character
2
nd
character
Complete message
Last character
2nd message
1
st
character