Doc. code 1080100090
Version: 2015_03_03
10
9.4.1
Technical data radio
Frequency
868 MHz
Transmission power
up to 12 dBm
Protocol
wireless M-Bus based on EN 13757-3
Selectable modes
S1 / T1 / C1
Telegrams
-
short telegram in conformity to AMR (OMS-Spec_Vol2_Primary_v301): energy
(heat/cooling energy, pulse input 1, pulse input 2), total volume, flow, power, hint
flag, return flow temperature, temperature difference
-
long telegram for walk-by read-out: energy (heat/cooling energy, pulse input 1,
pulse input 2), total volume, hint flag, 15 monthly values
Encryption
AES: Advanced Encryption Standard; key length: 128 bits
9.4.2
Radio configuration*
Parameter
Possible settings
Factory settings
(Battery lifetime, estimated: 6 years + 1 )
Mode
S1 / T1 / C1; unidirectional
T1 (unidirectional)
Transmission period
00:00 - 24:00; any time period in the day
7:00 am - 7:00 pm
Transmission interval 120 seconds - 240 minutes
120 seconds (heat meters)
Weekdays
Monday – Sunday (any weekday)
Monday - Friday
Weeks in a month
1 – 4 (4: uninterrupted, incl. a possible 5
th
week)
1 – 4 (4: uninterrupted)
Months
1 - 12
1 - 12
Radio activation date 01.01. - 31.12. (day. month)
not set
AES-128-encryption
-
not encrypted;
-
encrypted:
-
Master Key;
-
random key per instrument
Master Key
Type of telegram
-
short telegram in conformity to AMR
(OMS-Spec_Vol2_Primary_v301)
-
long telegram for walk-by read-out
long telegram (walk-by)
*Factory settings may vary from the above.
9.4.3
Activation of the radio interface
The radio interface
leaves the factory not activated
. It can be activated as follows:
a.
Without using additional software the radio function can be activated by
pressing the push-button for more than 3 seconds while at the display item ‘M-
Bus address’, second level, item 8 (see section 7. Display, Level 2 / Technician’s loop) is displayed. The
standard factory-settings will be activated.
b.
The radio function can also be activated using the software ‘Device Monitor’. This software can be
ordered separately as an option. The exact procedure for activating the radio function using this software
is described in the accompanying handbook.
After successful activation of the radio function a triangle will appear permanently in
the lower left corner of the display.
If using the compact mode, for one hour after activation the meter transmits in installation mode. This means
that format telegrams and compact telegrams are sent alternately.
During installation mode at least one meter of the version being installed (forward or return flow, heat or
heat/cooling, pulse inputs, display units) must be read out with the Engelmann Read-out Software. The format of
the telegram will be stored locally in the PC in an .xml file.
After completion of the installation mode only compact telegrams will be transmitted.
9.5
Two additional pulse inputs (optional; only in conjunction with M-Bus or radio)
With this option, additional instruments with pulse outputs can be read out via M-Bus or radio.
