Wired M-Bus; Wireless M-Bus (Optional) - Infranet Technologies M2M CONTROL CX320 Technical Manual

M2M Control CX320 Technical Manual V1.01

Wired M-Bus

The M2M Control CX320 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
M2M Control CX320 device needs to be supplied with an external supply for the M-Bus interface to
be operational.
M-Bus port pins
Pin Name
18 M-BUS+
19 M-BUS-/SGND
Specification for the M-Bus:
Min.
Bus idle voltage
Slave devices
Speed

Wireless M-Bus (optional)

The M2M Control CX320 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:
Frequency
Number of channels
Data Rate
Max output power
Indicative LOS
Description
M-Bus signal
M-bus ground / Signal ground
Typ. Max.
- - 36
- - 20
300 - 9600
Min. Typ. Max.
- 868 -
- 12 -
4.8 - 100
- - 10
- 500 -
Unit
VDC Protected against short-
circuiting
bps
Unit
MHz
kchip/s
dBm
meter
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