Module M-BUS I/O
Technical sheet
Connection principle general M-Bus
Controllers M-BUS
Multiplexers M-BUS
M-BUS I/O
Up to 99 inputs with the display unit D400S
Up to 254 inputs with MB-RS and MB-MA modules
PLC
Probes
Scales/encoders
Description
The MB-IO module allows to connect external devices to M-Bus network (actuators,
safety, PLC...). 8 inputs/outputs isolated by optocoupler are available.
The outputs are similar to «PNP open collector» type and can be used with an
external power-supply from 12 to 30 volts max. The maximal drained stream of each
output is 50mA.
The inputs represent a charge of 2.2 Kohms connected to 0 volt.
Cabling
Power-supply
12-30 VDC
M-Bus Input
(display or
MB-RS module /
MB-MA)
Terminals 1 to 8 configurable as
input or output
Male connector
with screw terminals
(delivered with the module
MB-IO)
M-Bus output to probes
modules or other MB-IO
Button to identify
the MB-IO on the Bus
1
Connection example with a PLC
PLC output connected
on an entry from
MB-IO module
PLC : + 24 V
Input
Output
PLC output
PLC : 0 V
PLC : + 24 V
Output
Output to the PLC
MB-IO module output
connected to a PLC input
Input
PLC : 0 V
Mechanical characteristics and assembly
The M-Bus modules are made with a sturdy aluminium
profile, declined in several lenghths described in the
dimension table below.
All M-Bus modules are attached on a standard DIN rail,
width 35mm and heigth 7.5mm.
2
Module
Length
MB-PS, MB-2C, MB-BA
51mm
MB-IO, MB-2M, MB-4M, MB-4C, MB-2S, MB-2T, MB-RS
76mm
MB-4D, MB-8D
96mm
MB-8I, MB-MA
126mm
Height
Width
40mm (without
connectors)
74mm
Edition : 2019.11 / 681.127-110
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