Communication
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9.3
Wireless M-Bus
The wireless M-Bus function enables the meter to communicate with a sta-
tionary unit (radio concentrator, MUC
– Multi Utility Controller) or a mobile unit
(Handheld, e.g. pocket pc) using 868 MHz radio frequency (unlicensed).
The function supports the OMS
1)
-compliant data transfer.
The wireless M-Bus function is available with integrated antenna.
Standard
Open Metering System Specification (Issue
3.0.1); EN 13757-4
Frequency
868.95 MHz (min. 868.90 MHz to max.
869.00 MHz)
Transmission power
Min. 3.16 mW (5 dBm) to max. 25 mW (13.9
dBm)
Range
2)
- Free field
Up to max. 400 m
Power supply
3 batteries type AA
Sending interval
- Mobile data reading
- Stationary data reading
- User defined data reading
20 s
15 min
Acc. to telegram length 12
– 900 s
1)
Open Metering System
2)
May vary depending on terrain and building structure
Data telegram F000
– stationary radio (sending interval 15 min.)
Following data are available by default for data reading:
•
Current energy
•
Current volume
•
Current flowrate
•
Current power
•
Current temperature hot side
•
Current temperature cold side
•
Error (manufacturer specific)
•
Current timestamp (type I)
Data telegram F001
– mobile data reading (sending interval 20 sec., battery life
time 6 years)
Following data are available by default for data reading:
•
Current energy
•
Current volume
•
Energy: previous month on reference date
•
Volume: previous month on reference date
•
Monthly reference date
•
Energy: previous year on reference date
•
Annual reference date
•
Error (manufacturer specific)
•
Current timestamp (type I)
