Diehl 775 Instrucciones De Montaje página 31

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7.1 Module installation (fig. III)
1. Open the calculator by folding down the side catches.
2. Lock the module into the appropriate slot and carefully connect the
pre-formed ribbon cable at both ends.
3. Close the lid and check the meter for correct operation by pressing the
push button. Apply the tamper-evident seal of the housing lid if the
meter functions correctly.
7.2 Communication
Communication modules must be secured so that opening of
meters is only possible by destroying the securing points.
The calculator supports three communications channels.
Two additional communication modules can be used in wireless operation.
Both communication modules have their own primary address. Both ports have
a common secondary address, which is set to the serial number ex works.
The protocols may be different for all three communication channels and
are pre-set ex works. The telegrams can be defined for each customer
using the IZAR@MOBILE 2 software.
7.2.1 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 0.1 % of duty cycle
(min. 8s); variable, depending on protocol length and programming)
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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 encrypted.
ƒ
Reading modes: Walk-By, Drive-By, Fixed-Network
ƒ
For problematic radio installations (shield) the external wireless mod-
ule set can also be used.
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