Remote I/O modules with modular system box

I/O Modules

I/O (Input/Output) modules, also called input/output boards or remote, digital and analog nodes, with box or open frame.

MPNC modular system or MPNE modular system.

** COMING SOON** : From January 2026, the MPNT range for ENCODER, PTO and LOAD CELLS will also be available.

Remote I/O with box - MPNC modular system

Modbus interface MPNC006

Modbus RTU interface module with analog inputs and programmable digital lines.

Analog output MPNC035

Expansion module with 4 analog ouputs configurable via software (mA, V, PWM).

Digital nodes input/output MPNC020

Expansion module with digital inputs/outputs. Module with 16 inputs or 16 outputs.

Analog inputs MPNC030

Expansion module with 4 analog inputs configurable via software (mA, V, PT100, J, K, T).

Open Frame Remote I/O - MPNE Modular System

Relay board ACIN01

Board with 5 24 Vdc relays with 250Vac (max. 5A) or 30Vdc (max 3A) contacts.

What are I/O modules

Input/Output (I/O) modules, also called input/output boards or remote nodes, are electronic devices that serve as an interface between the control system (such as a PLC) and the field, that is, the sensors and actuators installed on a machine or plant.

Basically, they translate electrical signals from the physical world (buttons, sensors, motors, valves, etc.) into digital or analog data that the controller can process, and vice versa.

A remote node is a decentralized electronic device that:

is physically located away from the main controller (such as a PLC or industrial PC),
Is connected via an industrial communication network (EtherCAT, Modbus, CANopen, PROFINET, etc.),
is responsible for acquiring data from sensors or controlling actuators locally.

In essence, it is an "intelligent peripheral point" of the automation network and is used to distribute acquisition or control operations, avoiding carrying all physical (analog/digital) signals all the way to the main switchboard.

What a remote node can do

Depending on the type, it may:

Acquire signals from sensors → e.g., load cells, encoders, thermocouples, pressure switches.
Manage local actuators → e.g., valves, motors, relays.
Process data locally → filtering, A/D conversion, calculation of forces, positions, etc.
Communicate with the PLC or SCADA via bus or industrial network.

Benefits

✅ Reduces signal wiring to the switchboard.
✅ Decreases interference and electrical noise.
✅ Facilitates modular maintenance (you can replace only one node).
✅ Increases system scalability (add nodes where they are needed).

Main types of I/O modules

🔹 Inputs (Input)

They receive signals from the field.

Digital inputs (DI): detect logical states (ON/OFF).
👉 Examples: buttons, limit switches, proximity sensors.
Analog inputs (AI): acquire variable signals (0-10 V, 4-20 mA, etc.).
👉 Examples: load cells, pressure transducers, analog encoders.

🔹 O utputs (Output)

They send signals to actuators or field devices.

Digital outputs (DO): drive on/off devices.
👉 Examples: relays, lamps, solenoid valves.
Analog outputs (AO): generate proportional signals.
👉 Examples: control of inverters, proportional valves, servo drives.