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Continuously improved and developed since 1996, Metro M-bus allows to connect numerous gauging probes and instruments from various brands and technologies to the Metro display units.

It allows the user to keep probes already owned and give him extended functionalities and performances by using a Metro display.

The M-Bus is mechanically and electrically compatible with the Solartron Orbit bus.

The M-bus is based on a RS485 link that gives the possibility to have important distances between the displays and the transducers without lost of signal.

Universal bus for gauging probes and measuring instruments

The module’s enclosures and electronic have been redesigned in 2012 to offer the best performance to users.

The M-Bus modules are today made out of anodised extruded aluminium profile that can be clipped on a standard DIN rail. It is very adapted to be used on a severe industrial environment.

Below is a list of available modules.

M-BUS	Description
MB-AG	1 Air gauge
MB-1A	1 analogue input 4-20mA and 0-10V
MB-1D	1 instrument (comparator, caliper..) digimatic only (no Opto RS etc)
MB-R1	1 RS232 input
MB-33	1 SIPu33 input
MB-2S	2 Heidenhain 11uA or 1VPP probes
MB-2T	2 Heidenhain TTL probes
MB-41E	4 Inductive probes ETAMIC JENOPTIK
MB-4IM	4 inductive probes MAHR
MB-4IMPS	4 Inductive probes MARPOSS
MB-41	4 Inductive probes METRO
MB-4IT	4 Inductive probes TESA
MB-4D	4 Instruments
MB-4M	4 Magnescale probes (DK Type)
MB-4A11	4 Marposs A11 probes
MB-4C	4 Sylvac capacitive probes
MB-4P	4 Sylvac digital probes
MB-8I	8 inductive probes METRO
MB-8IT	8 Inductive probes TESA
MB-8uE	8 laser Micros Epsilon optoNCDT 1320/1420
MB-IO	8 optocoupled IO
MB-BA	Baluff sensor
MB-BT	Bluetooth smart 4.0 (8 Sylvac instruments)
81213-1.5	M-BUS cable length 1.5m with M8 connector for M3 air gauge and Heidenhain
81210-2	M-BUS cable length 2m
81210-5	M-BUS cable length 5m
81210-10	M-BUS cable length 10m
MB-IP	master Ethernet/USB, MODBUS TCP (values only)
MB-RS	Master RS232/USB, MODBUS RTU (values only)
MB-NET-SERVICE	Metro Data Server,service software
MB-NET	Network communication module
MB-PS	power supply 12-30 volts
MB-PS-24V	power supply 12-30 volts for MB-8uE
MB-PS-NOT_PILOTED	power supply 12-30 volts without power interruption
MB-RL	Relay board
MB-RC	remote control with 4 buttons
MB-TP	Temperature module PT100/1000 or type K
ACS-MBU-002	Test board fo rMB-IO with 8 LED and 8 buttons, including power supply
ACS-MBU-003	Type K thermocouple

MB-RS

Master module to connect the M-Bus multiplexers to a computer or a PLC using RS232 or USB

MB-IP

Master module to connect the M-Bus multiplexers to a computer or a PLC using Ethernet or USB

MB-4i/8i : connection of inductive gauging probes

Module to connect 4 or 8 inductive probes. Several models are available allowing the user to connect different brands of inductive gauging probes to the Metro display units:

Metro (M802, M804S etc)
Tesa type (GT21 , GT31 etc)
Mahr / Feinprüf (P2004M, 1300 etc)
Marposs (F10, F25 etc)
Peter Hirt (T101F etc)
Solartron Metrology (AX/1/S etc)

MB-AG : module for 1 Air Gage

Module to connect 1 air gage. Possibility to calibrate in 2 or 3 points. Filter function to increase the stability. High resolution. Compatible with any brand of air gage.

MB-2S : connection of 2 incremental probes from Heidenhain

11µA or 1Vpp output signal.

MB-BT : connection of Sylvac wireless measuring instruments

Module to connect 8 Sylvac or Bowers measuring instruments, wireless up to 15 m of distance. Compatible only with the M400 display unit.

MB-4C

Connection of 4 Capacitive probes from Sylvac

MB-4M

Connection of 4 Magnescale (ex Sony) probes

MB-2T

Connection of 2 TTL probes or encoders

MB-IO : module with 8 optocoupled I/O

Allows to connect PLC peripherals to your M-Bus system.

MB-4D & 8D: connection of 4 or 8 measuring instruments

This module allows to plug measuring instruments (comparator, caliper, micrometer, weight scale etc…) from any brand (Mitutoyo, Mahr, Sylvac, Tesa…) to a display unit from Metro.

MB-TP : module for temperature sensors

Module to connect 1 temperature sensor. It can be used on the M3 and M400 displays for either an alarm when the temperature changes from a defined value since the last preset, or for temperature compensation.