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MicroUnit - remote I/O system

General description of the MicroUnit series

The MicroUnit series I/O modules are designed especially for the implementation of distributed systems for the monitoring and control of technological processes, but they can be also used in many other applications in the field of laboratory measurements, etc. Modules work as remote intelligent units able to process analog or digital signals from sensors and generate analog and digital control signals.

Communication between modules and the central system is based on the Modbus RTU protocol via RS-485 line as default, however, there are available LAN converters with native data transfer Modbus UDP, USB converters and various types of add-on cards. Special LAN converters-concentrators with datalogger function are also available.

Overview of the basic features of the MicroUnit series

Drivers and software

As mentioned above, MicroUnit modules are equipped with two communication protocols - standard Modbus RTU and channel-oriented AIBus-2. Protocols are software selectable during user configuration.

For typical applications with PC or PLC as a Modbus RTU master, there is no need to use specific MicroUnit drivers and any general software support for this protocol can be used.

In the case of programs using AIBus-2 protocol (e.g. ControlWeb drivers and TEDIA MicroUnit datalogger) specific software support is required. However, the installation packages of these programs already contain AIBus-2 protocol support for the various RS-485 interfaces.

Configuration & test utility support both Modbus RTU and AIBus-2 protocols.

Analog input modules for unified signals

(i.e. ranges 10V, ±10V, 5V, ±5V, 20mA, etc.)

Type AIN AOUT DIN DOUT CNT
MU-413 4x U/I
(ADC 16-bit)
- - - - - - - - - - - -
MU-612 6x U/I,
DC & AC 50Hz
(ADC 24-bit)
- - - 2x (24V isol.)
(DC & AC)
2x (24V isol.) 2x 32-bit
(DC signals only)
MU-1212 12x U,
DC & AC 50Hz
(ADC 24-bit)
- - - 2x (24V isol.)
(DC & AC)
2x (24V isol.) 2x 32-bit
(DC signals only)
MU-1213 6x U, 6x I,
DC & AC 50Hz
(ADC 24-bit)
- - - 2x (24V isol.)
(DC & AC)
2x (24V isol.) 2x 32-bit
(DC signals only)
MU-1214 12x I,
DC & AC 50Hz
(ADC 24-bit)
- - - 2x (24V isol.)
(DC & AC)
2x (24V isol.) 2x 32-bit
(DC signals only)

Note: List of discontinued types can be found on dedicated page.

Analog input modules for direct sensor connection

(i.e. resistance thermometers - RTDīs, thermocouples, etc.)

Type AIN AOUT DIN DOUT CNT
MU-415 4x U/TC/R/RTD
(2/3/4-wire topology)
(ADC 24-bit)
- - - 2x
(24V isol.)
(DC & AC)
2x
(24V isol.)
2x 32-bit
(DC signals only)
MU-416 4x U/TC/R/RTD
(2/3/4-wire topology)
(ADC 24-bit)
- - - 2x
(24V isol.)
(DC & AC)
4x
(24V isol.)
2x 32-bit
(DC signals only)
MU-418 4x U/TC
(ADC 16-bit)
- - - - - - - - - - - -
MU-419 4x U/R/RTD
(2-wire topology)
(ADC 16-bit)
- - - - - - - - - - - -
MU-491
new
4x U/TC
(ADC 16-bit)
isolation 4kVRMS
- - - 2x
(24V isol.)
(DC & AC)
2x
(24V isol.)
2x 32-bit
(DC signals only)
MU-492
new
4x U/TC
(ADC 16-bit)
isolation 4kVRMS
- - - 2x
(24V isol.)
(DC & AC)
2x
(24V isol.)
2x 32-bit
(DC signals only)
MU-615 6x R/RTD
(2/3/4-wire topology)
(ADC 24-bit)
- - - 2x
(24V isol.)
(DC & AC)
2x
(24V isol.)
2x 32-bit
(DC signals only)
MU-815 8x U/TC/R/RTD
(2-wire topology)
(ADC 24-bit)
- - - 2x
(24V isol.)
(DC & AC)
2x
(24V isol.)
2x 32-bit
(DC signals only)
MU-816 8x U/TC/R/RTD
(2-wire topology)
(ADC 24-bit)
- - - 2x
(24V isol.)
(DC & AC)
4x
(24V isol.)
2x 32-bit
(DC signals only)

Note: List of discontinued types can be found on dedicated page.

Analog output modules

Type AIN AOUT DIN DOUT CNT
MU-251 - - - 2x U - - - - - - - - -
MU-259 - - - 2x I - - - - - - - - -
MU-451 - - - 4x U - - - - - - - - -

Note: List of discontinued types can be found on dedicated page.

SSI interface modules

Type AIN AOUT DIN DOUT CNT
MU-136 - - - - - - 1x SSI slave interface
(1x isolated input,
1x RS-422 outputs)
- - -
1x SSI slave, 32-bit max. data length, binary or Gray code
MU-137 - - - - - - 1x SSI slave interface
(1x isolated input,
1x RS-422 outputs)
- - -
like MU-136 but with RTC
MU-138 - - - - - - 1x SSI receiver interface
(2x isolated input)
- - -
1x SSI receiver, 32-bit max. data length, binary or Gray code
MU-139 - - - - - - 1x SSI receiver interface
(2x isolated inputs)
- - -
like MU-138 but with RTC
MU-234 - - - - - - 2x SSI master interface
(2x isolated inputs,
2x RS-422 outputs)
- - -
2x SSI master, 32-bit max. data length, binary or Gray code
MU-236 - - - - - - 2x SSI master interface
(2x isolated inputs,
2x isolated RS-422 outputs)
- - -
like MU-234 but isolated CLK outputs

IRC counter modules

(especially designed for the processing of quadrature signals)

Type AIN AOUT DIN DOUT CNT
MU-132 - - - - - - 3x RS-422/TTL
+1x TTL
- - - 1x 32-bit & IRC encoder
(4MHz max., digital filter,
EEPROM data backup)
MU-133 - - - - - - 3x RS-422/TTL
+1x TTL
- - - 1x 32-bit & IRC encoder
(4MHz max., digital filter,
EEPROM data backup, RTC)
like MU-132 but with RTC

Note: List of discontinued types can be found on dedicated page.

Counter modules with computing unit

(e.g. for electricity meters, water flowmeters, etc.)

Type AIN AOUT DIN DOUT CNT
MU-431 - - - - - - 4x
(TTL, passive)
- - - 4x 32-bit (1kHz max., digital filter, EEPROM data backup)
MU-432 - - - - - - 4x
(TTL, passive)
- - - 4x 32-bit (1kHz max., digital filter, EEPROM data backup, RTC)
MU-436 - - - - - - 4x
(TTL, passive)
- - - 4x 109 (400Hz max., digital filter, immediate and total consumption, EEPROM data backup)
MU-437 - - - - - - 4x
(TTL, passive)
- - - 4x 109 (400Hz max., digital filter, immediate and total consumption, EEPROM data backup, RTC)
MU-441 - - - - - - 4x
(24V isol.)
- - - 4x 32-bit (1kHz max., digital filter, EEPROM data backup)
MU-442 - - - - - - 4x
(24V isol.)
- - - 4x 32-bit (1kHz max., digital filter, EEPROM data backup, RTC)
MU-446 - - - - - - 4x
(24V isol.)
- - - 4x 109 (400Hz max., digital filter, immediate and total consumption, EEPROM data backup)
MU-447 - - - - - - 4x
(24V isol.)
- - - 4x 109 (400Hz max., digital filter, immediate and total consumption, EEPROM data backup, RTC)
MU-841 - - - - - - 8x
(24V isol.)
- - - 8x 32-bit (1kHz max., digital filter, EEPROM data backup)
MU-842 - - - - - - 8x
(24V isol.)
- - - 8x 32-bit (1kHz max., digital filter, EEPROM data backup, RTC)
MU-846 - - - - - - 8x
(24V isol.)
- - - 8x 109 (400Hz max., digital filter, immediate and total consumption, EEPROM data backup)
MU-847 - - - - - - 8x
(24V isol.)
- - - 8x 109 (400Hz max., digital filter, immediate and total consumption, EEPROM data backup, RTC)
Note: Almost every module with digital inputs is equipped with simple counters.

Note: List of discontinued types can be found on dedicated page.

Digital output modules with PWM

Type AIN AOUT DIN DOUT CNT
MU-262 - - - - - - 2x (24V isol.)
(DC & AC)
2x (24V isol.) + PWM 2x 32-bit
(DC signals only)
MU-462 - - - - - - - - - 4x (24V isol.) + PWM - - -

Note: List of discontinued types can be found on dedicated page.

Digital output modules with "watchdog" capability

Type AIN AOUT DIN DOUT CNT
MU-192 - - - - - - - - - 2x (relay 250V)
"watchdog" capability
- - -

Note: List of discontinued types can be found on dedicated page.

Digital input/output modules

Type AIN AOUT DIN DOUT CNT
MU-470 - - - - - - 4x (24V isol.)
(DC & AC)
- - - 4x 32-bit
(DC signals only)
MU-471 - - - - - - 3x (24V isol.)
(DC & AC)
1x (24V isol.) 3x 32-bit
(DC signals only)
MU-472 - - - - - - 2x (24V isol.)
(DC & AC)
2x (24V isol.) 2x 32-bit
(DC signals only)
MU-473 - - - - - - 1x (24V isol.)
(DC & AC)
3x (24V isol.) 1x 32-bit
(DC signals only)
MU-474 - - - - - - - - - 4x (24V isol.) - - -
MU-653 - - - - - - - - - 6x (relay 250V) - - -
MU-825 - - - - - - 8x (24V isol.)
(DC both polarities)
- - - 8x 32-bit
MU-826 - - - - - - 8x (24V isol.)
(DC & AC)
- - - 8x 32-bit
(DC & AC signals)
MU-851 - - - - - - - - - 8x (24V NPN) - - -
MU-853 - - - - - - - - - 8x (24V PNP) - - -
MU-3222A - - - - - - 32x (24V isol.)
(DC both polarities)
- - - - - -
MU-3225A - - - - - - 32x (24V isol.)
(DC both polarities)
- - - 32x 32-bit
MU-3226A - - - - - - 32x (24V isol.)
(DC & AC)
- - - 32x 32-bit
(DC & AC signals)
MU-3251A - - - - - - - - - 32x (24V NPN) - - -
MU-3253A - - - - - - - - - 32x (24V PNP) - - -

Note: List of discontinued types can be found on dedicated page.

Power supply modules in industrial design

Type Description
MU-1512 power supply module in industrial design (12V/1,2A)
MU-1524 power supply module in industrial design (24V/0,6A)
MU-3012 power supply module in industrial design (12V/2,2A)
MU-3024 power supply module in industrial design (24V/1,3A)

Note: List of discontinued types can be found on dedicated page.

Special converters (for MicroUnit modules only)

Type Description
MU-1052U communication converter LAN<=>RS-485 (AIBus-2 protocol support only), USB interface for user-friendly configuration

Note: List of discontinued types can be found on dedicated page.