RTCU LX4 pro Technical Manual V1.00
Advanced Industrial M2M/IoT Gateway
Logic IO ApS.
Ph: (+45) 7625 0210
Holmboes Allé 14
Fax: (+45) 7625 0211
8700 Horsens
Page 20 of 39
Email: [email protected]
Denmark
Wired M-Bus
The RTCU LX4 pro has an onboard wired M-Bus interface compliant with EN 13757-2/3 and offers a
comprehensive API for communicating with up to 20 slave devices on the bus.
The M-Bus interface is short-circuiting protected and supports full master-mode functionality. The
RTCU LX4 pro device needs to be supplied with an external supply for the M-Bus interface to be
operational.
M-Bus port pins
Pin
Name
Description
18
M-BUS+
M-Bus signal
19
M-BUS-/SGND
M-bus ground / Signal ground
Specification for the M-Bus:
Min.
Typ.
Max.
Unit
Bus idle voltage
-
-
36
VDC
Protected against short-
circuiting
Slave devices
-
-
20
Speed
300
-
9600
bps
Wireless M-Bus (optional)
The RTCU LX4 pro supports an optional onboard wireless M-Bus interface compliant with EN 13757-
4/7 and offers a comprehensive API for collecting data from wireless M-Bus slaves.
The Wireless M-Bus interface is designed for OMS EU/CE applications, but other variants are also
available on request.
The module has support for modes S1, S2, T1, T2, and R2 as well as common reception of mode T
and mode C1 in the form of mode T1+C1 and T2+C1.
Specification for the Wireless M-Bus OMS EU/CE interface:
Min.
Typ. Max.
Unit
Frequency
-
868
-
MHz
Number of channels
-
12
-
Data Rate
4.8
-
100
kchip/s
Max output power
-
-
10
dBm
Indicative LOS
-
500
-
meter
