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The following parameters can be configured:
Note: The parameters must be adapted to the deployed
radio receiver.
1. Radio mode and encryption (security profile acc. OMS)
•
Select the radio mode: C1 or T1.
•
Select the encryption: "None" or "OMS security profile A
(mode 5)" or "...B (mode 7)" (higher security).
Note: In Germany, encryption according to the OMS
security profile B (encryption mode 7) is necessary for
radio transmission to a smart meter gateway.
2. Data telegram
[2]
•
Select the required data telegram.
Note: If an encryption is selected for the data telegram,
the data telegram names are extended by the addition
"OMS-..."
3. Transmission interval
[3]
•
Set the transmission interval in 2-seconds steps.
The transmission interval can be set from a range of 16 sec-
onds to about 18 hours.
Example for 15 minutes: 15 x 60 = 900 seconds
Note: The update of the data between meter and the
radio module is always done in a fixed pattern. This
pattern is 10 seconds for mains supply and 15 minutes
for battery operation.
4. Telegram composition
•
The telegram composition can be selected individually
for the data telegram "wM-Bus / OMS – user-defined".
Proceed as follows to compose the data telegram individually:
•
Select the required values from the column "Available
values".
•
Transfer the required values in the column "Data Tele-
gram" by drag & drop.
The values not required can be transferred from the column
"Data Telegram" into the column "Available values" by drag &
drop.
Note: The frequency band allocation is automatically
checked. If the frequency band allocation is above
100%, the transmission interval or the telegram compo-
sition must be adjusted. The minimum transmission
interval is automatically displayed as a suggestion.
5. Age of Data
[5]
The radio module retrieves data from the T550 calculator in a
time grid of 15 minutes. The transmission interval has a differ-
ent, parameterizable time grid. The "age of data" indicates the
time difference between the transmission and the fetching of
the data.
•
Put a tick by "Age of Data".
Note: In Germany, this option must be activated when
connected to a Smart Meter Gateway.
6.4
Apply settings
Proceed as follows to apply the settings:
•
Click on the "OK" button.
After a successful parameterization, the following message
appears:
"OMS Parameters have been set."
6.5
Leave parameterization
Proceed as follows to leave the parameterization operation:
•
Click on the
icon in the quick launch bar.
After a few seconds the following message appears:
"Meter is in Nb."
Siemens Smart Infrastructure
[4]
A6V12318600_----_a
The meter is now in normal operation (Nb-Mode) and the pa-
rameterization is completed.
6.6
Activating the radio module
Proceed as follows to activate the radio module:
[1]
•
Press the button on the radio module for at least 2 sec-
onds.
The module immediately starts to send data telegrams accord-
ing to the selected parameterization.
The status and the radio mode of the radio module can be
checked in "Loop 4" on the meter.
•
For T550
(UH50...) FW ≥ 5.23
Radio
mode
T
1
T
1
T
1
C
1
C
1
C
1
•
For T550
(UH50...) FW < 5.23
Note: Each further press of the radio button triggers
the transmission of a data telegram with updated
data.
6.7
Deactivating the radio module
Radio deactivation by Service Software
Proceed as follows to deactivate the sending of data tele-
grams:
•
In the menu bar, select the menu Parameterization → Ra-
dio module 868 MHz.
For T550
(UH50...) ≥ FW 5.23,
•
Remove the tick from the option "Radio" [6].
Radio deactivation by Para-menu
Proceed as follows to deactivate the sending of data tele-
grams:
•
Press the service button for at least 3 seconds until
Type "RF" in slot "Module 2" in 2 s. cycles
with one of the lower rows:
:
Telegram
format A
r
F
o
n
--
r
F
o
n
--
r
F
o
n
--
r
F
o
n
--
r
F
o
n
--
r
F
o
n
--
und T550
(UC50...)
the following window appears:
appears on the LCD.
Security
profile
--
A
B
--
A
B
:
2021-01-28
8
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