M-Bus Communication Module; Rs232 Communication Module - Diehl Metering 548 Manual De Instalación

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Reading modes: Walk-By, Drive-By, Fixed-Network
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For problematic radio installations (shield) the external radio module
set can also be used

7.2.2 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. The module contains
a 2-pole terminal strip with terminals marked 24, 25.
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The connection is not
polarity-conscious and is
electrically isolated
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M-Bus protocol to EN 1434
standard;
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300 or 2400 baud
(auto baud detect)
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Connection for
2 x 2.5 mm² wires
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Current drawn:
one M-Bus load

7.2.3 RS232 Communication module

The RS232 communication module is a serial interface for communicating
with external devices, e.g. PC; 300 or 2400 bauds.
The module contains a 3-pole terminal strip with terminals marked
62 (Dat), 63 (Req) and 64 (GND).
A special adapter cable is required for connection (order no. 087H0121).
The coloured wires are to be connected as shown:
62 = brown
63 = white
64 = green
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