MBIO-DAIO - Analogue/Digital Combination

MBIO-DAIO - Analogue/Digital Combination
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Our Price:  £79.00(£94.80 Inc. VAT)

Analogue Inputs:  4
Analogue Outputs:  1
Digital Inputs:  4
Digital Outputs:  2


1 in stock, immediate despatch  

1 in stock, immediate despatch

Low-cost Modbus RS485 based remote IO units, which provide a simple way for integrating analogue or digital signals to supervisory SCADA systems. The MBIO-DAIO is a multi-function unit with a mix of analogue and digital inputs and outputs.

Special Offer:  Discounts of 7%, 10%, 12.5% and 15% are available when you order 10, 25, 50 and 100 items or more of this product.

  • 2 x Analogue Inputs, 0-20mA or 0-10Vdc : Resolution: 12bits
  • 1 x Analogue Outputs 0(4)-20mA or 0(2)-10Vdc : Resolution: 12bits
  • 2 x RTD Inputs, 2 or 3 wire – PT100, Ni120, PT1000 : Resolution: 0.1 Deg C
  • 4 x Digital Inputs with 32 bit counters, Input Voltage range 10-26Vdc
  • 2 x Digital Outputs - Open collector,  36Vdc @ 100mA (max) per output
  • Watch dog output timer     Disable or 1-255 sec  adjustable
  • Isolation (Field & Logic) - 1500VAC RMS
  • Isolation (Inter Channel) - 350VAC (Pk to Pk)
  • Operating Temperature. -10°C to + 50°C
  • Power Supply - 12-24V DC (30mA @12V, 17mA @24V)
  • Dimensions - 100mm x 90mm x 25mm (excluding screw terminals)

The MBIO-DAIO module is a multipurpose combination of inputs and outputs. The module can accommodate either 2 or 3 wire RTD sensors, current (0-20mA) and voltage (0-10V) inputs, current (0-20mA) or voltage (0-10V) output, and digital inputs and outputs.

RTD Inputs

There are 2 RTD inputs on the module. The RTD resistance is read by the module circuitry, linearised and converted to degrees Centigrade. No ranging is required as the module covers the full range of the RTD as indicated in the RTD table.  The value that is read from the Modbus register is the actual temperature in degrees centigrade to 0.1°C resolution. ie: a value of 3451 corresponds to a temperature of 345.1°C.

Analogue Inputs

The Analog Inputs (2) can be configured by internal jumpers as either a current input (0-20mA) or a voltage input (0-10V).

An input of 0 - 20mA input current or 0 – 10V input voltage represents an output value of 0 - 4095 (12 bits) in the corresponding Modbus register.
Analogue Output

There is a single analog output which can be configured with internal jumpers for a current output (0-20mA) or voltage output (0-10V).
The resolution is 12 bits, so writing a value to the Modbus register for each output  of 0 - 4095 would give an output current of 0 - 20mA. A value of 819 ± 1LSB will give a current output of 4mA.

Digital Inputs

There are 4 digital inputs on the module. The inputs share a common terminal and can be configured for common positive or common negative.

The inputs have got counters associated with them. The counters operate in three modes.

In mode 0 all the counters are disabled.

In mode 1 all counters are 32 bit counters allowing a count value from 0 to 4294967295. The count value can be cleared by writing a zero to the associated registers or preset to any other value using the same method.

In mode 2 the inputs are connected as up/down counters. Input 1 will increment counter 1 whilst input 2 decrements counter1.

Note: The count values are not battery backed-up and will be lost if power is turned off.

The format of the registers allows the status of the inputs to be read as either single bits or all at once as a single register on the Modbus network.

Digital Outputs

The module has 2 open collector (NPN) digital outputs. The outputs may be used to drive lamps or external relays when more drive capability is required.

The outputs are written to by the Modbus master device such as a PC or PLC. Each output can be individually switched on or off, or all outputs can be set up at the same time by writing a single number to the output register which represents the status of all outputs.

An output watchdog timer can be configured to switch off all the outputs if there has been no communications with the module for up to 255 seconds. A value of 0 seconds will disable this timer and the outputs will remain in the last programmed state.


Configuration Software

IOStudio is a free software package used to configure the communication settings for IO modules on the Modbus network. Once a module is detected, it is possible to view real-time data of the module directly on the PC and it can be used for diagnostic purposes as well.



User Manual >>

IOStudio Config Software >>  


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