Elster F96Plus, Installation And User Manual, Page: 19 / 60

19
L-Bus

2 wire terminal with marking “Dat“ and “
┴
“

Terminals suitable for a cable with 2 wires of 2.5 mm²

Maximum voltage: 50 V DC

Primary or secondary addressing

Baud rate 300 or 2400 baud (automatic baud rate detection)

Protocol: M-Bus

in combination with the external radio module IZAR RADIO EXTERN L-Bus RS232 the meter
sends the data every 3 minutes via the L-Bus module to the radio module

once the module is connected the meter recognizes that and disables the integrated radio
permanent! (as long as the L-Bus module is mounted)

the L-Bus module should be mounted on slot 2, to make sure that the same protocol will be
transferred as it is done via the integrated radio.
Fig. K L-Bus module
4.4.2 Function modules
Pulse input module

The two pulse inputs can be programmed independently of each other with values of 1, 2.5, 10,
25, 100, 250, 1000 or 2500 litres per pulse.

Possible units are all the energy units available in the meter, such as kWh/pulse and GJ/pulse,
but also volume units like l/pulse, m³/pulse or no units.

The input frequency is in the range 0 – 8 Hz, min. pulse duration 10 ms

Input resistance 2.2 M
Ω

Terminal voltage 3 V DC

Cable length
≤
10 m
Pulse input 1 is marked “I1 -
┴
” on the module and “IN1” in the display, pulse input 2 “I2 -
┴
” on the
module and “IN2” in the display.
Fig. L Pulse input module