W&T connects
Interfaces for TCP/IP, Ethernet, RS-232, RS-485, USB, 20mA, glass and plastic fiber optic cable, http, SNMP, OPC, Modbus TCP, I/O digital, I/O analog, ISA, PCI

Applications for Web-IO Digital / Industry and data protocols:

Digital signals as OPC item

Visualization systems are often provided with information using OPC protocol. But not all components which are part of a system provided their status as an OPC item. Information is often only provided via potential-free contacts or digital signals.

OPC client-based visualization

The Web-IO Digital together with the OPC server brings switching information to OPC-based visualizations.

The potential-free contacts of the respective components first need to be connected to the inputs on the Web-IO Digital, and after the OPC server is installed it can be used to incorporate the existing process visualization.

Free download of the W&T OPC Server

Product Selection



Nominal voltage12V or 24V (switching threshold +8V)

Outputs (optional )

Nominal voltage12V or 24V
(permitted range 6-30V, max. 500 mA)
potential-free contact, max. 48V/5A
using corresponding coupling relays for 230V

  • Web-IO 2xDigital Input, 2x Digital Output2x In, 2x Out
  • Web-IO 12xDigital Input, 12x Relay Output12x In, 6x relays Out
  • Web-IO 12xDigital Input, 12x Relay Output12x In, 12x Out
Product Selection

  • Ethernet portConnect the Web-IOs to a free Ethernet port and provide power
  • In/OutConnect up the inputs and outputs
  • Assign IP addressAssign the Web-IO Digital an IP address
  • ConfigurationConfigure the Web-IO Digital in the browser

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