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 TCP, 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
- RS-485 communication line with transient overvoltage protection
- standard Modbus RTU communication protocol as default
- additionally, modules also support high-speed channel-oriented AIBus-2 protocol
- communication baud rate up to 230,4kBd
- configuration memory with software and hardware write protect feature (part of memory available for user data)
- reliable system watchdog & application watchdog to prevent technology crash
- working temperature range -10÷60°C as default, wider temperature range -40÷70°C as option (possibility of full functional test performed on each piece in temperature & humidity chamber)
- built into industrial DIN 35 mm housings Modulbox (see picture above)
- special types available in front panel housing (LCD modules, etc.) or as non-encapsulated kits designed for installation in equipments
- Control Web drivers for free
(a Czech development environment provided by Moravian Instruments) - TEDIA MicroUnit Datalogger for free
(software for configuring measurement tasks and recording data to disk) - an extremely wide range of I/O types and features (analog inputs for unified signals or direct sensor connection, analog inputs for three-phase electric power system, analog outputs, various of types digital inputs/outputs, counters with IRC encoder or computing unit, SSI interface support, etc.)
- special high precision and stable instruments for thermocouple measuring equipped with temperature-shielded box
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, because 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.
Special converters (for MicroUnit modules only)
| Type | Description |
|---|---|
| MU-1052M new |
communication converter LAN<=>RS-485 (Modbus protocol support only) |
| MU-1052U | communication converter LAN<=>RS-485 (AIBus-2 protocol support only) |
Note: List of discontinued types can be found on dedicated page.
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 | 4x U/TC (ADC 16-bit) isolation 4kVRMS |
- - - | 2x (24V isol.) (DC & AC) |
2x (24V isol.) |
2x 32-bit (DC signals only) |
| MU-492 | 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 | |||||
| MU-332 new |
- - - | - - - | 9x RS-422/TTL | - - - | 3x 32-bit & IRC encoder (4MHz max., digital filter) |
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-623 | - - - | - - - | 6x (240V isol.) (DC & AC) isolation 4kVRMS |
- - - | 6x 32-bit (DC & AC signals) |
| MU-625 | - - - | - - - | 6x (24V÷48V isol.) (DC both polarities) isolation 4kVRMS |
- - - | 6x 32-bit |
| MU-626 | - - - | - - - | 6x (24V÷48V isol.) (DC & AC) isolation 4kVRMS |
- - - | 6x 32-bit (DC & AC signals) |
| 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.