I/O Controller 2 RS232-485 Serial Port Ethernet Converters

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The I/O Controller 2 connects an RS232/485 with a set of eight digital inputs and outputs to an Ethernet local area network. The built-in 9-pin serial port can be connected to a PC over a LAN, with the serial port accessible in Windows as a Virtual Serial Port (VSP). Its digital inputs and outputs can be controlled over the Web or through Modbus/TCP. The device has a built-in web server for configuration and the HW VSP3 software application can connect to 100 remote serial ports to a single PC. Two I/O Controller 2 devices can be connected in a Box-2-Box mode to extend the capabilities.

I/O Controller 2 Tset Kit

The I/O Controller 2 is supplied with a power adapter, test board, lap link and a CD with manual.

Key Features

  • 1x full serial port RS232/485 with 9-bit communications support
  • Eight Digital Inputs (for dry contacts, switches, or 5-20Vdc)
  • Eight Digital Outputs (Output Collector)
  • Machine-2-Machine (M2M) communication protocols: HTTP, Telnet, TCP Server, TCP Client/Server
  • Ethernet LAN connection and configurable via a built-in web server and TELNET
  • Full RS232 serial port (9 pins: RxD, TxD, GND, CTS, RTS, DSR, DTR, RI, CD)
  • RS485 serial interface with up to 115,200 Bd rate
  • Free HW VSP3 software to provide a Virtual Serial Port for Windows (NT service, x64 systems) and supports for up to 100 remote serial ports
  • Compatible with a range of third-party software platforms using Borland C++, MS Visual, VB, C#, PHP, JAVA and more)


  • Link up to eight buttons or switches with a software application
  • Connect RS232 devices to a local area network including barcode, RFID readers, serial printers and displays
  • Inputs/Outputs (I/o) can be controlled over MODBUS/TCP from any SCADA system independently of the serial line
  • Output signals can be used to open a door, turn on a sounder or disconnect power. remotely over the network
  • Remote control of power and other technologies over RS232 and RS485
  • Remote control of displays and signal lights
  • Remote status checks on PIR sensors, door contacts and security systems
  • RFID and card readers
  • Vending machines
  • Security alarms
  • Access control systems
  • UPS system control and data logging devices
  • Barcode scanners


Physical Installation

  • Metal Case
  • Installation: DIN, flat surface, rack shelf
  • Design: Industrial, IT

Operation Schematic

I/O Controller2 Installation