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Idiomas disponibles
11.2.3 OMS 4 mode 7
A special radio variant offers the possibility of radio communication according to OMS 4 Mode 7. The protection
profile for smart metering of the Federal Office for Information Security (BSI/Germany) is taken into account here.
11.2.4 Technical data radio OMS 4 mode 7
Frequency
Transmission power
Protocol
Selectable modes
Type of telegram
Encryption
11.2.5 Radio configuration OMS 4 mode 7
Parameter
Mode
Transmission period
Transmission interval
Weekdays
Weeks in a month
Months
Radio activation date
AES-128-Encryption (type of key)
AES-128- Encryption
Type of telegram
11.2.6 Activation of the radio interface
The radio interface leaves the factory deactivated. After putting the heat cost allocator on the heat conductor
the radio interface will be activated automatically.
When the radio interface is activated an "R" is shown permanently left below in the LCD (please see 5.2).
The Engelmann heat cost allocator is equipped with an installation radio mode. After the attachment has
recognized the installation of the heat cost allocator, the device sends a radio telegram for one hour every 36
seconds.
If using the compact mode, for one hour after activation the heat cost allocator transmits in installation mode.
This means that format telegrams and compact telegrams are sent alternately.
12 Hint Flags
The Engelmann heat cost allocator has eight basic reference codes, which can also be used in combination.
Hint codes are information on events that differ from the normal operating mode of the heat cost allocator. The
hint codes may have the character of pure information (no limitation of the measurement and memory function),
as well as indicate one or more serious errors of the measurement and memory function. Depending on the
content and type, the indications appear in the display, in the optical reading and in the transmission via radio in
different representation (see also 12.1.1 and 12.1.2).
Page 26 of 59
Article no.: 5081200002
868 MHz
up to 10 dBm
wireless M-Bus based on EN 13757-4
T1 / C1
-
short telegram AMR (in conformity to OMS-Spec_Vol2_Primary_v4.11):
serial number, date/time, current consumption, due date, due date
value, hint flag, time of hint flag
AES: Advanced Encryption Standard; key length: 128 bit
Possible settings
T1 / C1; unidirectional
00:00 - 12:00 pm; any time period in the day
120 seconds - 240 minutes
Monday – Sunday
1 - 4 (4: uninterrupted, incl. a possible 5
1 - 12
annually variable (except 29.02.)
-
random key per instrument
-
activated / deactivated
-
short telegram AMR (in conformity to OMS-Spec_Vol2_Primary_v4.11)
2022_10_31
th
week)
Subject to technical change! Errors excepted.
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