Communication; Communication Via Radio; M-Bus Communication Module - Diehl Sharky 774 Instrucciones De Montaje

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6.

Communication

Communication modules must be secured so that opening of
meters is only possible by destroying the securing points.
The calculator supports two communication channels (radio (wireless) or M-Bus).
The protocols may be different for all two communication channels and
are pre-set ex works. The telegrams can be defined for each customer
using the IZAR@MOBILE 2 software.

6.1 Communication via radio

The integrated radio module is an interface for communication with Diehl
Metering radio receivers.
Unidirectional communication has the following specification:
ƒ
The module transmits every 8 ... 256 s (send period max. 0.1 %
of duty cycle (min. 8s); variable, depending on protocol length and
programming)
ƒ
The communication always transfers the currently measured data
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Transmission frequencies:
–
434 MHz, transmission power (EN 300 220-2 V3.2.1): 10mW e.r.p.
–
868 MHz, transmission power (EN 300 220-2 V3.2.1): 25mW e.r.p.
ƒ
Various Diehl Metering receivers are available for receiving the proto-
col (e.g. Bluetooth, GPRS, LAN, ...)
ƒ
The protocol corresponds to OMS Profile A or Profile B and is enc-
rypted.
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Reading modes: Walk-By, Drive-By, Fixed-Network
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For problematic radio installations (shield) the external wireless
module set can also be used

6.2 M-Bus Communication module

The M-Bus communication module is a serial interface for communication
with external devices (M-Bus control centres), e.g. IZAR CENTER. A num-
ber of meters can be connected to a control centre.
ƒ
The connection is not polarity-sensitive and is electrically isolated
ƒ
M-Bus protocol standardised according to EN 1434;
ƒ
300 or 2400 baud (auto baud detect)
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