Description

Basic Concept

The Railduino module consists of the following main components:

Arduino MEGA 2560 R3
A printed circuit board featuring an 8-bit ATmega2560 microcontroller operating at a frequency of 16 MHz, known as the Arduino MEGA 2560, an open-source project. For more information, visit Arduino Official Site

Railduino shield
The primary PCB enables the connection of external sensors and actuators to the controller, conditioning signals so that the microcontroller can read or control them. Additionally, this board provides power supply and communication functionality.

Ethernet shield
An optional PCB that enables connection to an Ethernet network. When this feature is used, the Railduino module is equipped with header connectors between the Ethernet shield and the Railduino shield.

Product Description

The Railduino module is designed to integrate with a supervisory control system (e.g., Loxone) as remote inputs and outputs. It enables control of external equipment (e.g., lights, pumps, breakers) and reading values from inputs (e.g., push buttons, contacts).

Outputs / inputs

24x optically isolated digital inputs, input voltage 12-24V DC
12x relay outputs with max. current 7A / 4A at 230V AC
4x high-side switch (HSS) digital outputs - switching V+ voltage - max. 24V DC, 2A / channel / PWM
4x low-side switch (LSS) digital outputs - switching GND - max. 24V DC, 2A / channel / PWM
2x analog inputs (0-10V range), resolution 10 bits (0-1023)
2x analog outputs (0-10V range), resolution 8 bits (0-255)

Communication

LAN connectivity - Modbus TCP / UDP
RS485 serial bus - Modbus RTU, gateway to LAN, baudrate selectable
1-Wire bus - supports Maxim/Dallas DS18B20 or DS2438 (max. 10pcs)

Other functions

webserver for settings
watchdog for processor, LAN
remote restart - SW and HW reset
high speed dig. inputs
serial debug mode
RS485-LAN gateway
DIP switch settings
USB for debug purposes
LED diodes - indication of operation
Reset button - restart of the module