Communication
23/39
10.2 M-Bus module G4
The M-Bus module enables the meter to communicate with an M-Bus centre
in order to transmit measured values.
Standard
EN 1434-3; EN 13757-2, -3
Protocol
EN 60870-5
Electrical isolation
from calculator
yes
from the pulse inputs
no
Connection
Strip-back length
5 mm
Connection capacity
rigid or flexible
0.25 ... 0.75 mm²
flexible with wire end ferrule
0.25 ... 0.75 mm²
Polarity
any
Voltage
50 V DC maximal
Current consumption
1 M-Bus load (1.5 mA)
Addressing
primary or secondary
Baud rate
300, 1200, 2400, 4800 or 9600 baud
Interface description
see TKB3448
10.3 M-Bus module MI with 2 pulse inputs
The M-Bus module enables the meter to communicate with an M-Bus centre
in order to transmit measured values. In addition to a possible voltage supply
from the M-bus connection, the “MI” module is equipped with a battery. This
powers the module processor and the pulse input, if no M-bus voltage is ap-
plied.
M-Bus
Standard
EN 1434-3; EN 13757-2, -3
Protocol
EN 60870-5
Electrical isolation
from calculator
yes
from the pulse inputs
no
Connection
strip-back length
5 mm
Connection capacity
rigid or flexible
0.25 ... 0.75 mm²
flexible with wire end ferrule
0.25 ... 0.75 mm²
Polarity
any
Voltage
50 V DC max.
Current consumption
1 M-Bus load (1.5 mA)
Addressing
primary or secondary
Baud rate
300, 1200, 2400, 4800 or 9600 baud
Interface description
see TKB3448
Pulse input
Number of pulse inputs
2 pulse inputs per “MI” module
Life of the module battery
5 years of ope 1 year storage
duration;
if the M-bus voltage is applied for at
least 90% of the operating time, the
battery life increased to 10 years
Standard for pulse inputs
Class IB per EN 1434-2
Frequency
max. 10 Hz
Pulse duration (low)
≥
50 ms
