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The MU-1052U is special LAN<=>RS-485 communication converter designed to integrate MicroUnit series modules (or large group of modules) into Ethernet.

The converter is equipped with a service USB interface that allows to configure the converter without connection to power supply (the converter is powered from USB). Additionally, the converter offers continuous monitoring of the diagnostic data (ongoing communication, timeouts, errors, etc.) via ambedded web server.

Software support

MU-1052U converters are supported by Windows drivers (included with installation packages of utilities etc.) and Control Web drivers for free (a Czech development environment provided by Moravian Instruments).
There is also a description of communication protocol at the UDP packet level available.

Note: Although all I/O modules allow the setting of both AIBus-2 and Modbus protocols, we strongly recommend to use the standard Modbus protocol (supported by MU-1052M converter) in all new systems.


Type MU-1052U
Number of ports 1x ethernet 10/100 Mbit/s
1x RS-485 "AIBus-2 master"
1x USB (for configuration only)
Type od ethernet interface 10BaseT/100BaseTX, RJ45
Supported protocols ethernet, ARP, IPv4, ICMP, UDP, TCP, HTTP
LAN parameters set by the configuration program
(DHCP and DNS are not supported)
Transfer rate 600Bd ÷ 230.4kBd
RS-485 ESD surge protection 300A, 8/20 µs, IEC 801-5 (TVS diodes 5V8/600W)
Isolation voltage (ethernet) 2kVDC
Supply voltage 10÷30VDC
Power consumption 2.8W max.
Housing & Dimensions Modulbox 3M
Signal terminals screw terminals, wire 2.5mm2 max.