3
The AT-WMBUS-04 RF module with pulse input is used to record the indications of the water meter
connected to it and to transfer them over the WM-Bus radio interface in the band of 868.95 MHz.
The number of pulses counted by the module is stored in an internal buffer, whose capacity allows to count
up to 999999999 pulses. The data is then transmitted over the radio, in accordance with the saved profile. It is
also possible to remember the state of counted pulses on a given day of the month, with up to 12 such states
(for each month) before the oldest data will be overwritten by the latest one. The profile, according to which the
module works, can be saved at the production stage, or changed at a later date using PDA, with full freedom of
the device configuration.
Each module has its own unique radio number (ID), allowing for unambiguous identification of the device in
the telemetric system.
Parameters that can be set in the profile for the AT-WMBUS-04 module:
•
Water meter number,
•
Date and time,
•
Access code,
•
Time of transmission (from - to),
•
Day of monthly volumes,
•
Days of work (transmitting),
•
Pulse:
1; 2,5; 10; 25; 100; 250; 1000 l/imp,
•
Current volume,
•
Minimum flow threshold,
•
Maximum flow threshold,
•
Defined number of leaks,
•
Shut-down threshold,
•
Maximum number of stop days,
•
The period of transmitting of the configuration
frame,
•
The period of transmitting of the WMBus frame,
•
Configuration frame power,
•
WMBus frame power,
•
RSSI threshold,
•
WMBus frame configuration.
Configuration of the WMBus frame of the AT-WMBUS-04 module:
•
History of max. flow breakdowns,
•
History of water leak breakdowns,
•
History of the magnetic field application
breakdowns,
•
Time of the magnetic field application breakdown,
•
Voltage,
•
Battery in days,
•
Volume history,
•
Monthly volume,
•
Water meter number,
•
Overlay time.
Alarms reported by the AT-WMBUS-04 module:
•
Stop of the water meter,
•
Magnet application.
3.
DESCRIPTION OF THE OPERATION
