Digital inputs expansion MR-DI-4 Hi

Digital inputs expansion MR-DI-4 Hi

MAX-MR-DI-4HI, 5908312598374

Product description

With MODBUS RTU output.
The MR-DI-4 module is used as an external device that extends digital inputs of the PLC programmable controllers or other devices in which data is exchanged via the RS-485 port with MODBUS RTU protocol.

* four independent outputs
* input designed to work with AC/DC signals
* state 1 trigger selection: with high or low voltage
* state 1 trigger selection: with closing or opening of the circuit input
* time filter that allows you to set the minimum acceptable length of input signal (elimination of distortions at the input)

The MR-DI-4 module has four inputs. The module has configurable options for activating inputs (TRUE value) with low (0V) or high (V +) signal and with closing or opening the input signal circuit. Time filter is used for eliminating interference (false pulses) which may appear at the input. This is the setting of a minimum length of time of the input signal, which will be seen at the input and will be treated as a change of state. Shorter signals are ignored.
Reading of input states and adjustment of all communication and data exchange parameters is carried out via RS-485 port using MODBUS RTU communication protocol. Power is indicated by a green LED U light. Correct data exchange between the module and other device is indicated by the LED yellow Tx light.   


Power supply voltage9÷30 V DC
Inputs - voltage tolerance160÷265 V AC/DC
Communication protocolMODBUS RTU
Number of digital inputs4
The type of workSLAVE
Baudrate1200÷115200 bit/s
Data bits8
Stop bits1 / 1.5 / 2
Bits of parityEVEN / ODD / NONE
Terminalpluggable terminal blocks 2,5 mm²
Tightening torque0,4 Nm
Power consumption0,3 W
Working temperature-20÷50°C
Dimensions1 module (18 mm)
Assemblyon rail 35 mm
Ingress Protection MarkingIP20
I/O connection scheme

Implementation of connection of counting and digital inputs


Reset of communication settings

MODBUS RTU protocol parameters




Table of input triggering options and logical states assigned to them TRUE (1) i FALSE (0)