Communication; Electronic Unit Interfaces; M-Bus; Pulse Output - Landis+Gyr ULTRACOLD 2WR6 Series Manual

Communication

9 Communication

Electronic unit interfaces

M-Bus

Pulse output

The meter is equipped with an optical interface with M-Bus protocol as stand-
ard.
One of the following options can be ordered for remote readout.
Standard, protocol
Galvanic isolation (between meter and
module)
Polarity
Voltage
Current
Addressing
Baud rate
Technical document
Connection
Note: When reading via M-Bus, the permissible average reading
frequency must not be exceeded (1 × every 3 h at 2400 baud,
1 × every 24 h at 300 baud). A read-out with a higher frequency is
not permitted and it could lead to incorrect functioning of the meter.
Type
Galvanic isolation (between meter
and module)
Polarity
Voltage
Current
Dielectric strength
Classification
Voltage drop
Connection
EN 1434-3; EN 13757-2,
EN 13757-3
yes
any
max. 50 V DC
1.3 M-Bus loads
primary or secondary
300, 2400 baud
TKB 3427
cable 1.5 m pre-assembled: PVC,
LIYY 2 x 0.25 mm
ternal diameter 3.6 mm
open collector
yes
observe
max. 30 V
max. 30 mA
500 V against ground
eff
OB (acc. to EN 1434-2)
ca. 1.3 V at 20 mA
cable 1.5 m pre-assembled: PVC,
2
LIYY 2 x 0.25 mm tin-coated, external
diameter 3.6 mm)
16/21
2
tin-coated, ex-