9
Pulse value of the modulator disc
Digit rollers
Pulse value
8-digit register with modulator disc 1 Rotation = 1 Liter
6-digit register with modulator disc
(DN50-DN125)
1 Rotation = 10 Liter
6-digit register with modulator disc
(DN150-DN200)
1 Rotation = 100 Liter
5. Radio modules
The EDC wireless M-Bus radio modules are available
in T-mode. Various data telegrams are available.
The modules operate unidirectional and usually
send every 20 seconds. Special versions possible.
The LoRaWAN variant is available with a monthly
(scenario 1) or daily (scenario 2) transmission
interval.
A variant with hourly values (scenario 3 = 8 telegrams
with 3 hourly values each) is available on request.
Data telegram contents (wM-Bus)
The EDC module can be delivered with various data
telegrams:
Telegram contents
Typ A*
Typ B* Typ C**
Current value
✓
✓
✓
Current date
✓
✓
Due date values
✓
✓
Current value
✓
✓
✓
Another 11 monthly values
✓
Status information 1
✓
✓
✓
Status information 2
✓
✓
✓
* Data telegram according OMS Spec., Transmission
interval 20 sec.
** wM-Bus, manufacturer specific data telegram,
Transmission interval 15 sec.
Data telegram contents (LoRaWAN
TM
)
Telegram contents
Interval
Packet
Serial number (DevEUI
EDC-module)
once at join
SP 9.2
Device-specific informa
-
tion (firmware version,
LoRaWAN-version, device
type)
six-monthly
SP 9.2
Due date value and date
[01.01.]
every year on
due date
SP 4
Changes of status
(manipulation, battery
warning,...)
erratic
(event based)
AP 1
Szenario 1 (monthly)
Telegram contents
Interval
Packet
Monthly value (previous
month) [liter], status
information, actual date
and time
monthly
(beginning)
SP 2
Monthly value (previous
month) [liter], mid-month
value, actual date and
time
monthly
(middle)
SP 3
Scenario 2 (daily)
Telegram contents
Interval
Packet
Daily values (previous
day) [liter]
daily
SP 1
Status information,
actual date and time
monthly
SP 9.1
Technical data EDC-module
wM-Bus
LoRaWAN
TM
Transmission
rate
wireless M-Bus
unidirectional,
T1 (standard),
optionally: S1, C1
LoRaWAN
868 MHz;
bidirektional
(class A)
Encryption code
AES-128
according to OMS
AES-128
Transmission
interval
typically 20 s; other
configurations
possible
Szenario 1
(monthly)
Scenario 2 (daily)
Transmission
power
25 mW
25 mW
